Merge remote-tracking branch 'dspace/master' into w2p-65267_delete-in-relationshipservice

Dockerfile.jdk8

@@ -54,7 +54,13 @@ EXPOSE 8080 8009
 
 ENV JAVA_OPTS=-Xmx2000m
 
-RUN mv /usr/local/tomcat/webapps/ROOT /usr/local/tomcat/webapps/ROOT.bk && \
-    ln -s $DSPACE_INSTALL/webapps/server   /usr/local/tomcat/webapps/ROOT && \
-    ln -s $DSPACE_INSTALL/webapps/server   /usr/local/tomcat/webapps/server   && \
+# Run the "server" webapp off the /server path (e.g. http://localhost:8080/server/)
+# and the v6.x (deprecated) REST API off the "/rest" path
+RUN ln -s $DSPACE_INSTALL/webapps/server   /usr/local/tomcat/webapps/server   && \
     ln -s $DSPACE_INSTALL/webapps/rest          /usr/local/tomcat/webapps/rest
+# If you wish to run "server" webapp off the ROOT path, then comment out the above RUN, and uncomment the below RUN.
+# You also MUST update the URL in dspace/src/main/docker/local.cfg
+# Please note that server webapp should only run on one path at a time.
+#RUN mv /usr/local/tomcat/webapps/ROOT /usr/local/tomcat/webapps/ROOT.bk && \
+#    ln -s $DSPACE_INSTALL/webapps/server   /usr/local/tomcat/webapps/ROOT && \
+#    ln -s $DSPACE_INSTALL/webapps/rest          /usr/local/tomcat/webapps/rest

Dockerfile.jdk8-test

@@ -54,11 +54,17 @@ EXPOSE 8080 8009
 
 ENV JAVA_OPTS=-Xmx2000m
 
-RUN mv /usr/local/tomcat/webapps/ROOT /usr/local/tomcat/webapps/ROOT.bk && \
-    ln -s $DSPACE_INSTALL/webapps/server   /usr/local/tomcat/webapps/ROOT && \
-    ln -s $DSPACE_INSTALL/webapps/server   /usr/local/tomcat/webapps/server   && \
+# Run the "server" webapp off the /server path (e.g. http://localhost:8080/server/)
+# and the v6.x (deprecated) REST API off the "/rest" path
+RUN ln -s $DSPACE_INSTALL/webapps/server   /usr/local/tomcat/webapps/server   && \
     ln -s $DSPACE_INSTALL/webapps/rest          /usr/local/tomcat/webapps/rest
+# If you wish to run "server" webapp off the ROOT path, then comment out the above RUN, and uncomment the below RUN.
+# You also MUST update the URL in dspace/src/main/docker/local.cfg
+# Please note that server webapp should only run on one path at a time.
+#RUN mv /usr/local/tomcat/webapps/ROOT /usr/local/tomcat/webapps/ROOT.bk && \
+#    ln -s $DSPACE_INSTALL/webapps/server   /usr/local/tomcat/webapps/ROOT && \
+#    ln -s $DSPACE_INSTALL/webapps/rest          /usr/local/tomcat/webapps/rest
 
+# Overwrite the v6.x (deprecated) REST API's web.xml, so that we can run it on HTTP (defaults to requiring HTTPS)
 COPY dspace/src/main/docker/test/rest_web.xml $DSPACE_INSTALL/webapps/rest/WEB-INF/web.xml
-
-RUN sed -i -e "s|\${dspace.dir}|$DSPACE_INSTALL|" $DSPACE_INSTALL/webapps/rest/WEB-INF/web.xml
+RUN sed -i -e "s|\${dspace.dir}|$DSPACE_INSTALL|" $DSPACE_INSTALL/webapps/rest/WEB-INF/web.xml

dspace-api/src/main/java/org/dspace/app/bulkedit/MetadataImport.java

@@ -193,7 +193,7 @@ public class MetadataImport {
      * @param workflowNotify If the workflows should be used, whether to send notifications or not
      * @param useTemplate    Use collection template if create new item
      * @return An array of BulkEditChange elements representing the items that have changed
-     * @throws MetadataImportException if something goes wrong
+     * @throws MetadataImportException  if something goes wrong
      */
     public List<BulkEditChange> runImport(boolean change,
                                           boolean useWorkflow,
@@ -402,13 +402,15 @@ public class MetadataImport {
 
                         // Add the metadata to the item
                         for (BulkEditMetadataValue dcv : whatHasChanged.getAdds()) {
-                            itemService.addMetadata(c, item, dcv.getSchema(),
-                                                    dcv.getElement(),
-                                                    dcv.getQualifier(),
-                                                    dcv.getLanguage(),
-                                                    dcv.getValue(),
-                                                    dcv.getAuthority(),
-                                                    dcv.getConfidence());
+                            if (!StringUtils.equals(dcv.getSchema(), MetadataSchemaEnum.RELATION.getName())) {
+                                itemService.addMetadata(c, item, dcv.getSchema(),
+                                        dcv.getElement(),
+                                        dcv.getQualifier(),
+                                        dcv.getLanguage(),
+                                        dcv.getValue(),
+                                        dcv.getAuthority(),
+                                        dcv.getConfidence());
+                            }
                         }
                         //Add relations after all metadata has been processed
                         for (BulkEditMetadataValue dcv : whatHasChanged.getAdds()) {
@@ -778,8 +780,8 @@ public class MetadataImport {
         }
 
         // Create the relationship
-        int leftPlace = relationshipService.findLeftPlaceByLeftItem(c, leftItem) + 1;
-        int rightPlace = relationshipService.findRightPlaceByRightItem(c, rightItem) + 1;
+        int leftPlace = relationshipService.findNextLeftPlaceByLeftItem(c, leftItem);
+        int rightPlace = relationshipService.findNextRightPlaceByRightItem(c, rightItem);
         Relationship persistedRelationship = relationshipService.create(c, leftItem, rightItem,
                 foundRelationshipType, leftPlace, rightPlace);
         relationshipService.update(c, persistedRelationship);

dspace-api/src/main/java/org/dspace/app/launcher/ScriptLauncher.java

@@ -13,6 +13,12 @@ import java.lang.reflect.Method;
 import java.util.List;
 import java.util.TreeMap;
 
+import org.apache.commons.cli.ParseException;
+import org.apache.log4j.Logger;
+import org.dspace.scripts.DSpaceRunnable;
+import org.dspace.scripts.factory.ScriptServiceFactory;
+import org.dspace.scripts.handler.DSpaceRunnableHandler;
+import org.dspace.scripts.handler.impl.CommandLineDSpaceRunnableHandler;
 import org.dspace.servicemanager.DSpaceKernelImpl;
 import org.dspace.servicemanager.DSpaceKernelInit;
 import org.dspace.services.RequestService;
@@ -27,6 +33,9 @@ import org.jdom.input.SAXBuilder;
  * @author Mark Diggory
  */
 public class ScriptLauncher {
+
+    private static final Logger log = Logger.getLogger(ScriptLauncher.class);
+
     /**
      * The service manager kernel
      */
@@ -76,8 +85,9 @@ public class ScriptLauncher {
         }
 
         // Look up command in the configuration, and execute.
-        int status;
-        status = runOneCommand(commandConfigs, args);
+
+        CommandLineDSpaceRunnableHandler commandLineDSpaceRunnableHandler = new CommandLineDSpaceRunnableHandler();
+        int status = handleScript(args, commandConfigs, commandLineDSpaceRunnableHandler, kernelImpl);
 
         // Destroy the service kernel if it is still alive
         if (kernelImpl != null) {
@@ -86,6 +96,50 @@ public class ScriptLauncher {
         }
 
         System.exit(status);
+
+    }
+
+    /**
+     * This method will take the arguments from a commandline input and it'll find the script that the first argument
+     * refers to and it'll execute this script.
+     * It can return a 1 or a 0 depending on whether the script failed or passed respectively
+     * @param args                  The arguments for the script and the script as first one in the array
+     * @param commandConfigs        The Document
+     * @param dSpaceRunnableHandler The DSpaceRunnableHandler for this execution
+     * @param kernelImpl            The relevant DSpaceKernelImpl
+     * @return                      A 1 or 0 depending on whether the script failed or passed respectively
+     */
+    public static int handleScript(String[] args, Document commandConfigs,
+                                       DSpaceRunnableHandler dSpaceRunnableHandler,
+                                       DSpaceKernelImpl kernelImpl) {
+        int status;
+        DSpaceRunnable script = ScriptServiceFactory.getInstance().getScriptService().getScriptForName(args[0]);
+        if (script != null) {
+            status = executeScript(args, dSpaceRunnableHandler, script);
+        } else {
+            status = runOneCommand(commandConfigs, args, kernelImpl);
+        }
+        return status;
+    }
+
+    /**
+     * This method will simply execute the script
+     * @param args                  The arguments of the script with the script name as first place in the array
+     * @param dSpaceRunnableHandler The relevant DSpaceRunnableHandler
+     * @param script                The script to be executed
+     * @return                      A 1 or 0 depending on whether the script failed or passed respectively
+     */
+    private static int executeScript(String[] args, DSpaceRunnableHandler dSpaceRunnableHandler,
+                                     DSpaceRunnable script) {
+        try {
+            script.initialize(args, dSpaceRunnableHandler);
+            script.run();
+            return 0;
+        } catch (ParseException e) {
+            script.printHelp();
+            e.printStackTrace();
+            return 1;
+        }
     }
 
     protected static int runOneCommand(Document commandConfigs, String[] args) {
@@ -98,7 +152,7 @@ public class ScriptLauncher {
      * @param commandConfigs  Document
      * @param args the command line arguments given
      */
-    public static int runOneCommand(Document commandConfigs, String[] args, DSpaceKernelImpl kernelImpl) {
+    protected static int runOneCommand(Document commandConfigs, String[] args, DSpaceKernelImpl kernelImpl) {
         String request = args[0];
         Element root = commandConfigs.getRootElement();
         List<Element> commands = root.getChildren("command");

dspace-api/src/main/java/org/dspace/app/util/DCInput.java

@@ -89,6 +89,11 @@ public class DCInput {
      */
     private boolean repeatable = false;
 
+    /**
+     * should name-variants be used?
+     */
+    private boolean nameVariants = false;
+
     /**
      * 'hint' text to display
      */
@@ -183,6 +188,9 @@ public class DCInput {
         String repStr = fieldMap.get("repeatable");
         repeatable = "true".equalsIgnoreCase(repStr)
             || "yes".equalsIgnoreCase(repStr);
+        String nameVariantsString = fieldMap.get("name-variants");
+        nameVariants = (StringUtils.isNotBlank(nameVariantsString)) ?
+                nameVariantsString.equalsIgnoreCase("true") : false;
         label = fieldMap.get("label");
         inputType = fieldMap.get("input-type");
         // these types are list-controlled
@@ -269,6 +277,15 @@ public class DCInput {
         return isRepeatable();
     }
 
+    /**
+     * Get the nameVariants flag for this row
+     *
+     * @return the nameVariants flag
+     */
+    public boolean areNameVariantsAllowed() {
+        return nameVariants;
+    }
+
     /**
      * Get the input type for this row
      *

dspace-api/src/main/java/org/dspace/content/BundleServiceImpl.java

@@ -7,6 +7,10 @@
  */
 package org.dspace.content;
 
+import static org.dspace.core.Constants.ADD;
+import static org.dspace.core.Constants.REMOVE;
+import static org.dspace.core.Constants.WRITE;
+
 import java.io.IOException;
 import java.sql.SQLException;
 import java.util.ArrayList;
@@ -268,6 +272,81 @@ public class BundleServiceImpl extends DSpaceObjectServiceImpl<Bundle> implement
         return authorizeService.getPolicies(context, bundle);
     }
 
+    @Override
+    public void updateBitstreamOrder(Context context, Bundle bundle, int from, int to)
+            throws AuthorizeException, SQLException {
+        List<Bitstream> bitstreams = bundle.getBitstreams();
+        if (bitstreams.size() < 1 || from >= bitstreams.size() || to >= bitstreams.size() || from < 0 || to < 0) {
+            throw new IllegalArgumentException(
+                    "Invalid 'from' and 'to' arguments supplied for moving a bitstream within bundle " +
+                            bundle.getID() + ". from: " + from + "; to: " + to
+            );
+        }
+        List<UUID> bitstreamIds = new LinkedList<>();
+        for (Bitstream bitstream : bitstreams) {
+            bitstreamIds.add(bitstream.getID());
+        }
+        if (from < to) {
+            bitstreamIds.add(to + 1, bitstreamIds.get(from));
+            bitstreamIds.remove(from);
+        } else {
+            bitstreamIds.add(to, bitstreamIds.get(from));
+            bitstreamIds.remove(from + 1);
+        }
+        setOrder(context, bundle, bitstreamIds.toArray(new UUID[bitstreamIds.size()]));
+    }
+
+    @Override
+    public void moveBitstreamToBundle(Context context, Bundle targetBundle, Bitstream bitstream)
+            throws SQLException, AuthorizeException, IOException {
+        List<Bundle> bundles = new LinkedList<>();
+        bundles.addAll(bitstream.getBundles());
+
+        if (hasSufficientMovePermissions(context, bundles, targetBundle)) {
+            this.addBitstream(context, targetBundle, bitstream);
+            this.update(context, targetBundle);
+            for (Bundle bundle : bundles) {
+                this.removeBitstream(context, bundle, bitstream);
+                this.update(context, bundle);
+            }
+        }
+    }
+
+
+    /**
+     * Verifies if the context (user) has sufficient rights to the bundles in order to move a bitstream
+     *
+     * @param context      The context
+     * @param bundles      The current bundles in which the bitstream resides
+     * @param targetBundle The target bundle
+     * @return true when the context has sufficient rights
+     * @throws AuthorizeException When one of the necessary rights is not present
+     */
+    private boolean hasSufficientMovePermissions(final Context context, final List<Bundle> bundles,
+                                                 final Bundle targetBundle) throws SQLException, AuthorizeException {
+        for (Bundle bundle : bundles) {
+            if (!authorizeService.authorizeActionBoolean(context, bundle, WRITE) || !authorizeService
+                    .authorizeActionBoolean(context, bundle, REMOVE)) {
+                throw new AuthorizeException(
+                        "The current user does not have WRITE and REMOVE access to the current bundle: " + bundle
+                                .getID());
+            }
+        }
+        if (!authorizeService.authorizeActionBoolean(context, targetBundle, WRITE) || !authorizeService
+                .authorizeActionBoolean(context, targetBundle, ADD)) {
+            throw new AuthorizeException(
+                    "The current user does not have WRITE and ADD access to the target bundle: " + targetBundle
+                            .getID());
+        }
+        for (Item item : targetBundle.getItems()) {
+            if (!authorizeService.authorizeActionBoolean(context, item, WRITE)) {
+                throw new AuthorizeException(
+                        "The current user does not have WRITE access to the target bundle's item: " + item.getID());
+            }
+        }
+        return true;
+    }
+
     @Override
     public void setOrder(Context context, Bundle bundle, UUID[] bitstreamIds) throws AuthorizeException, SQLException {
         authorizeService.authorizeAction(context, bundle, Constants.WRITE);

dspace-api/src/main/java/org/dspace/content/DSpaceObjectServiceImpl.java

@@ -146,7 +146,7 @@ public abstract class DSpaceObjectServiceImpl<T extends DSpaceObject> implements
     public List<MetadataValue> getMetadataByMetadataString(T dso, String mdString) {
         StringTokenizer dcf = new StringTokenizer(mdString, ".");
 
-        String[] tokens = { "", "", "" };
+        String[] tokens = {"", "", ""};
         int i = 0;
         while (dcf.hasMoreTokens()) {
             tokens[i] = dcf.nextToken().trim();
@@ -250,8 +250,11 @@ public abstract class DSpaceObjectServiceImpl<T extends DSpaceObject> implements
                 }
             }
             MetadataValue metadataValue = metadataValueService.create(context, dso, metadataField);
-            //Set place to list length
-            metadataValue.setPlace(this.getMetadata(dso, Item.ANY, Item.ANY, Item.ANY, Item.ANY).size());
+            //Set place to list length of all metadatavalues for the given schema.element.qualifier combination.
+            // Subtract one to adhere to the 0 as first element rule
+            metadataValue.setPlace(
+                this.getMetadata(dso, metadataField.getMetadataSchema().getName(), metadataField.getElement(),
+                                 metadataField.getQualifier(), Item.ANY).size() - 1);
 
             metadataValue.setLanguage(lang == null ? null : lang.trim());
 
@@ -533,7 +536,7 @@ public abstract class DSpaceObjectServiceImpl<T extends DSpaceObject> implements
     protected String[] getMDValueByField(String field) {
         StringTokenizer dcf = new StringTokenizer(field, ".");
 
-        String[] tokens = { "", "", "" };
+        String[] tokens = {"", "", ""};
         int i = 0;
         while (dcf.hasMoreTokens()) {
             tokens[i] = dcf.nextToken().trim();
@@ -571,7 +574,7 @@ public abstract class DSpaceObjectServiceImpl<T extends DSpaceObject> implements
                     if (compare == 0) {
                         if (o1 instanceof RelationshipMetadataValue) {
                             return 1;
-                        } else if (o2 instanceof  RelationshipMetadataValue) {
+                        } else if (o2 instanceof RelationshipMetadataValue) {
                             return -1;
                         }
                     }

dspace-api/src/main/java/org/dspace/content/ProcessStatus.java

@@ -0,0 +1,19 @@
+/**
+ * The contents of this file are subject to the license and copyright
+ * detailed in the LICENSE and NOTICE files at the root of the source
+ * tree and available online at
+ *
+ * http://www.dspace.org/license/
+ */
+package org.dspace.content;
+
+/**
+ * This Enum holds a representation of all the possible states that a Process can be in
+ */
+public enum ProcessStatus {
+    SCHEDULED,
+    RUNNING,
+    COMPLETED,
+    FAILED
+
+}

dspace-api/src/main/java/org/dspace/content/RelationshipServiceImpl.java

@@ -85,8 +85,12 @@ public class RelationshipServiceImpl implements RelationshipService {
         if (isRelationshipValidToCreate(context, relationship)) {
             if (authorizeService.authorizeActionBoolean(context, relationship.getLeftItem(), Constants.WRITE) ||
                 authorizeService.authorizeActionBoolean(context, relationship.getRightItem(), Constants.WRITE)) {
-                updatePlaceInRelationship(context, relationship, true);
-                return relationshipDAO.create(context, relationship);
+                // This order of execution should be handled in the creation (create, updateplace, update relationship)
+                // for a proper place allocation
+                Relationship relationshipToReturn = relationshipDAO.create(context, relationship);
+                updatePlaceInRelationship(context, relationshipToReturn);
+                update(context, relationshipToReturn);
+                return relationshipToReturn;
             } else {
                 throw new AuthorizeException(
                     "You do not have write rights on this relationship's items");
@@ -98,18 +102,34 @@ public class RelationshipServiceImpl implements RelationshipService {
     }
 
     @Override
-    public void updatePlaceInRelationship(Context context, Relationship relationship, boolean isCreation)
+    public void updatePlaceInRelationship(Context context, Relationship relationship)
         throws SQLException, AuthorizeException {
         Item leftItem = relationship.getLeftItem();
+        // Max value is used to ensure that these will get added to the back of the list and thus receive the highest
+        // (last) place as it's set to a -1 for creation
+        if (relationship.getLeftPlace() == -1) {
+            relationship.setLeftPlace(Integer.MAX_VALUE);
+        }
+        Item rightItem = relationship.getRightItem();
+        if (relationship.getRightPlace() == -1) {
+            relationship.setRightPlace(Integer.MAX_VALUE);
+        }
         List<Relationship> leftRelationships = findByItemAndRelationshipType(context,
                                                                              leftItem,
                                                                              relationship.getRelationshipType(), true);
-        Item rightItem = relationship.getRightItem();
         List<Relationship> rightRelationships = findByItemAndRelationshipType(context,
                                                                               rightItem,
                                                                               relationship.getRelationshipType(),
                                                                               false);
 
+        // These relationships are only deleted from the temporary lists incase they're present in them so that we can
+        // properly perform our place calculation later down the line in this method.
+        if (leftRelationships.contains(relationship)) {
+            leftRelationships.remove(relationship);
+        }
+        if (rightRelationships.contains(relationship)) {
+            rightRelationships.remove(relationship);
+        }
         context.turnOffAuthorisationSystem();
         //If useForPlace for the leftwardType is false for the relationshipType,
         // we need to sort the relationships here based on leftplace.
@@ -145,10 +165,6 @@ public class RelationshipServiceImpl implements RelationshipService {
             updateItem(context, rightItem);
 
         }
-
-        if (isCreation) {
-            handleCreationPlaces(context, relationship);
-        }
         context.restoreAuthSystemState();
 
     }
@@ -160,43 +176,14 @@ public class RelationshipServiceImpl implements RelationshipService {
         itemService.update(context, relatedItem);
     }
 
-
-    //Sets the places for the Relationship properly if the updatePlaceInRelationship was called for a new creation
-    //of this Relationship
-    private void handleCreationPlaces(Context context, Relationship relationship) throws SQLException {
-        List<Relationship> leftRelationships;
-        List<Relationship> rightRelationships;
-        leftRelationships = findByItemAndRelationshipType(context,
-                                                          relationship.getLeftItem(),
-                                                          relationship.getRelationshipType(), true);
-        rightRelationships = findByItemAndRelationshipType(context,
-                                                           relationship.getRightItem(),
-                                                           relationship.getRelationshipType(),
-                                                           false);
-        leftRelationships.sort((o1, o2) -> o2.getLeftPlace() - o1.getLeftPlace());
-        rightRelationships.sort((o1, o2) -> o2.getRightPlace() - o1.getRightPlace());
-
-        if (!leftRelationships.isEmpty()) {
-            relationship.setLeftPlace(leftRelationships.get(0).getLeftPlace() + 1);
-        } else {
-            relationship.setLeftPlace(0);
-        }
-
-        if (!rightRelationships.isEmpty()) {
-            relationship.setRightPlace(rightRelationships.get(0).getRightPlace() + 1);
-        } else {
-            relationship.setRightPlace(0);
-        }
+    @Override
+    public int findNextLeftPlaceByLeftItem(Context context, Item item) throws SQLException {
+        return relationshipDAO.findNextLeftPlaceByLeftItem(context, item);
     }
 
     @Override
-    public int findLeftPlaceByLeftItem(Context context, Item item) throws SQLException {
-        return relationshipDAO.findLeftPlaceByLeftItem(context, item);
-    }
-
-    @Override
-    public int findRightPlaceByRightItem(Context context, Item item) throws SQLException {
-        return relationshipDAO.findRightPlaceByRightItem(context, item);
+    public int findNextRightPlaceByRightItem(Context context, Item item) throws SQLException {
+        return relationshipDAO.findNextRightPlaceByRightItem(context, item);
     }
 
     private boolean isRelationshipValidToCreate(Context context, Relationship relationship) throws SQLException {
@@ -348,7 +335,7 @@ public class RelationshipServiceImpl implements RelationshipService {
             if (authorizeService.authorizeActionBoolean(context, relationship.getLeftItem(), Constants.WRITE) ||
                 authorizeService.authorizeActionBoolean(context, relationship.getRightItem(), Constants.WRITE)) {
                 relationshipDAO.delete(context, relationship);
-                updatePlaceInRelationship(context, relationship, false);
+                updatePlaceInRelationship(context, relationship);
             } else {
                 throw new AuthorizeException(
                     "You do not have write rights on this relationship's items");

dspace-api/src/main/java/org/dspace/content/dao/ProcessDAO.java

@@ -0,0 +1,57 @@
+/**
+ * The contents of this file are subject to the license and copyright
+ * detailed in the LICENSE and NOTICE files at the root of the source
+ * tree and available online at
+ *
+ * http://www.dspace.org/license/
+ */
+package org.dspace.content.dao;
+
+import java.sql.SQLException;
+import java.util.List;
+
+import org.dspace.core.Context;
+import org.dspace.core.GenericDAO;
+import org.dspace.scripts.Process;
+
+/**
+ * This is the Data Access Object for the {@link Process} object
+ */
+public interface ProcessDAO extends GenericDAO<Process> {
+
+    /**
+     * This method will return all the Process objects in the database in a list and it'll be sorted by script name
+     * @param context   The relevant DSpace context
+     * @return          The list of all Process objects in the database sorted on scriptname
+     * @throws SQLException If something goes wrong
+     */
+    public List<Process> findAllSortByScript(Context context) throws SQLException;
+
+    /**
+     * This method will return all the Process objects in the database in a list and it'll be sorted by start time.
+     * The most recent one will be shown first
+     * @param context   The relevant DSpace context
+     * @return          The list of all Process objects in the database sorted by starttime
+     * @throws SQLException If something goes wrong
+     */
+    public List<Process> findAllSortByStartTime(Context context) throws SQLException;
+
+    /**
+     * Returns a list of all Process objects in the database
+     * @param context   The relevant DSpace context
+     * @param limit     The limit for the amount of Processes returned
+     * @param offset    The offset for the Processes to be returned
+     * @return The list of all Process objects in the Database
+     * @throws SQLException If something goes wrong
+     */
+    List<Process> findAll(Context context, int limit, int offset) throws SQLException;
+
+    /**
+     * Returns the total amount of Process objects in the dataase
+     * @param context   The relevant DSpace context
+     * @return          An integer that describes the amount of Process objects in the database
+     * @throws SQLException If something goes wrong
+     */
+    int countRows(Context context) throws SQLException;
+
+}

dspace-api/src/main/java/org/dspace/content/dao/RelationshipDAO.java

@@ -51,26 +51,26 @@ public interface RelationshipDAO extends GenericDAO<Relationship> {
     List<Relationship> findByItem(Context context, Item item, Integer limit, Integer offset) throws SQLException;
 
     /**
-     * This method returns the highest leftplace integer for all the relationships where this
-     * item is the leftitem so that we can set a proper leftplace attribute on the next relationship
+     * This method returns the next leftplace integer to use for a relationship with this item as the leftItem
+     *
      * @param context   The relevant DSpace context
      * @param item      The item to be matched on leftItem
-     * @return          The integer for the highest leftPlace value for all the relatonship objects
-     *                  that have the given item as leftItem
+     * @return          The next integer to be used for the leftplace of a relationship with the given item
+     *                  as a left item
      * @throws SQLException If something goes wrong
      */
-    int findLeftPlaceByLeftItem(Context context, Item item) throws SQLException;
+    int findNextLeftPlaceByLeftItem(Context context, Item item) throws SQLException;
 
     /**
-     * This method returns the highest rightplace integer for all the relationships where this
-     * item is the rightitem so that we can set a proper rightplace attribute on the next relationship
+     * This method returns the next rightplace integer to use for a relationship with this item as the rightItem
+     *
      * @param context   The relevant DSpace context
      * @param item      The item to be matched on rightItem
-     * @return          The integer for the highest rightPlace value for all the relatonship objects
-     *                  that have the given item as rightItem
+     * @return          The next integer to be used for the rightplace of a relationship with the given item
+     *                  as a right item
      * @throws SQLException If something goes wrong
      */
-    int findRightPlaceByRightItem(Context context, Item item) throws SQLException;
+    int findNextRightPlaceByRightItem(Context context, Item item) throws SQLException;
 
     /**
      * This method returns a list of Relationship objects for the given RelationshipType object.
@@ -113,7 +113,7 @@ public interface RelationshipDAO extends GenericDAO<Relationship> {
      * @throws SQLException If something goes wrong
      */
     List<Relationship> findByItemAndRelationshipType(Context context, Item item, RelationshipType relationshipType,
-                                              Integer limit, Integer offset) throws SQLException;
+                                                     Integer limit, Integer offset) throws SQLException;
 
     /**
      * This method returns a list of Relationship objects for the given RelationshipType object.
@@ -157,7 +157,6 @@ public interface RelationshipDAO extends GenericDAO<Relationship> {
     List<Relationship> findByTypeName(Context context, String typeName, Integer limit, Integer offset)
             throws SQLException;
 
-
     /**
      * Count total number of relationships (rows in relationship table)
      *

dspace-api/src/main/java/org/dspace/content/dao/impl/CollectionDAOImpl.java

@@ -9,7 +9,6 @@ package org.dspace.content.dao.impl;
 
 import java.sql.SQLException;
 import java.util.AbstractMap;
-import java.util.Arrays;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Map;
@@ -64,11 +63,20 @@ public class CollectionDAOImpl extends AbstractHibernateDSODAO<Collection> imple
     public List<Collection> findAll(Context context, MetadataField order, Integer limit, Integer offset)
         throws SQLException {
         StringBuilder query = new StringBuilder();
-        query.append("SELECT ").append(Collection.class.getSimpleName()).append(" FROM Collection as ")
-             .append(Collection.class.getSimpleName()).append(" ");
-        addMetadataLeftJoin(query, Collection.class.getSimpleName(), Arrays.asList(order));
-        addMetadataSortQuery(query, Arrays.asList(order), null);
 
+        // The query has to be rather complex because we want to sort the retrieval of Collections based on the title
+        // We'll join the Collections with the metadata fields on the sortfield specified in the parameters
+        // then we'll sort on this metadata field (this is usually the title). We're also making sure that the place
+        // is the lowest place in the metadata fields list so that we avoid the duplication bug
+        query.append("SELECT c" +
+                                " FROM Collection c" +
+                                " left join c.metadata title on title.metadataField = :sortField and" +
+                                " title.dSpaceObject = c.id and" +
+                                " title.place = (select min(internal.place) " +
+                                "from c.metadata internal " +
+                                "where internal.metadataField = :sortField and" +
+                                " internal.dSpaceObject = c.id)" +
+                                " ORDER BY LOWER(title.value)");
         Query hibernateQuery = createQuery(context, query.toString());
         if (offset != null) {
             hibernateQuery.setFirstResult(offset);
@@ -76,7 +84,7 @@ public class CollectionDAOImpl extends AbstractHibernateDSODAO<Collection> imple
         if (limit != null) {
             hibernateQuery.setMaxResults(limit);
         }
-        hibernateQuery.setParameter(order.toString(), order.getID());
+        hibernateQuery.setParameter("sortField", order);
         return list(hibernateQuery);
     }
 

dspace-api/src/main/java/org/dspace/content/dao/impl/ProcessDAOImpl.java

@@ -0,0 +1,75 @@
+/**
+ * The contents of this file are subject to the license and copyright
+ * detailed in the LICENSE and NOTICE files at the root of the source
+ * tree and available online at
+ *
+ * http://www.dspace.org/license/
+ */
+package org.dspace.content.dao.impl;
+
+import java.sql.SQLException;
+import java.util.List;
+import javax.persistence.criteria.CriteriaBuilder;
+import javax.persistence.criteria.CriteriaQuery;
+import javax.persistence.criteria.Root;
+
+import org.dspace.content.dao.ProcessDAO;
+import org.dspace.core.AbstractHibernateDAO;
+import org.dspace.core.Context;
+import org.dspace.scripts.Process;
+import org.dspace.scripts.Process_;
+
+/**
+ * Implementation class for {@link ProcessDAO}
+ */
+public class ProcessDAOImpl extends AbstractHibernateDAO<Process> implements ProcessDAO {
+
+    @Override
+    public List<Process> findAllSortByScript(Context context) throws SQLException {
+
+        CriteriaBuilder criteriaBuilder = getCriteriaBuilder(context);
+        CriteriaQuery criteriaQuery = getCriteriaQuery(criteriaBuilder, Process.class);
+        Root<Process> processRoot = criteriaQuery.from(Process.class);
+        criteriaQuery.select(processRoot);
+        criteriaQuery.orderBy(criteriaBuilder.asc(processRoot.get(Process_.name)));
+
+        return list(context, criteriaQuery, false, Process.class, -1, -1);
+
+    }
+
+    @Override
+    public List<Process> findAllSortByStartTime(Context context) throws SQLException {
+        CriteriaBuilder criteriaBuilder = getCriteriaBuilder(context);
+        CriteriaQuery criteriaQuery = getCriteriaQuery(criteriaBuilder, Process.class);
+        Root<Process> processRoot = criteriaQuery.from(Process.class);
+        criteriaQuery.select(processRoot);
+        criteriaQuery.orderBy(criteriaBuilder.desc(processRoot.get(Process_.startTime)),
+                              criteriaBuilder.desc(processRoot.get(Process_.processId)));
+
+        return list(context, criteriaQuery, false, Process.class, -1, -1);
+    }
+
+    @Override
+    public List<Process> findAll(Context context, int limit, int offset) throws SQLException {
+        CriteriaBuilder criteriaBuilder = getCriteriaBuilder(context);
+        CriteriaQuery criteriaQuery = getCriteriaQuery(criteriaBuilder, Process.class);
+        Root<Process> processRoot = criteriaQuery.from(Process.class);
+        criteriaQuery.select(processRoot);
+
+        return list(context, criteriaQuery, false, Process.class, limit, offset);
+    }
+
+    @Override
+    public int countRows(Context context) throws SQLException {
+
+        CriteriaBuilder criteriaBuilder = getCriteriaBuilder(context);
+        CriteriaQuery criteriaQuery = getCriteriaQuery(criteriaBuilder, Process.class);
+        Root<Process> processRoot = criteriaQuery.from(Process.class);
+        criteriaQuery.select(processRoot);
+
+        return count(context, criteriaQuery, criteriaBuilder, processRoot);
+
+    }
+}
+
+

dspace-api/src/main/java/org/dspace/content/dao/impl/RelationshipDAOImpl.java

@@ -61,7 +61,7 @@ public class RelationshipDAOImpl extends AbstractHibernateDAO<Relationship> impl
     }
 
     @Override
-    public int findLeftPlaceByLeftItem(Context context, Item item) throws SQLException {
+    public int findNextLeftPlaceByLeftItem(Context context, Item item) throws SQLException {
         CriteriaBuilder criteriaBuilder = getCriteriaBuilder(context);
         CriteriaQuery criteriaQuery = getCriteriaQuery(criteriaBuilder, Relationship.class);
         Root<Relationship> relationshipRoot = criteriaQuery.from(Relationship.class);
@@ -70,25 +70,25 @@ public class RelationshipDAOImpl extends AbstractHibernateDAO<Relationship> impl
         List<Relationship> list = list(context, criteriaQuery, false, Relationship.class, -1, -1);
         list.sort((o1, o2) -> o2.getLeftPlace() - o1.getLeftPlace());
         if (!list.isEmpty()) {
-            return list.get(0).getLeftPlace();
+            return list.get(0).getLeftPlace() + 1;
         } else {
-            return 1;
+            return 0;
         }
     }
 
     @Override
-    public int findRightPlaceByRightItem(Context context, Item item) throws SQLException {
+    public int findNextRightPlaceByRightItem(Context context, Item item) throws SQLException {
         CriteriaBuilder criteriaBuilder = getCriteriaBuilder(context);
         CriteriaQuery criteriaQuery = getCriteriaQuery(criteriaBuilder, Relationship.class);
         Root<Relationship> relationshipRoot = criteriaQuery.from(Relationship.class);
         criteriaQuery.select(relationshipRoot);
         criteriaQuery.where(criteriaBuilder.equal(relationshipRoot.get(Relationship_.rightItem), item));
         List<Relationship> list = list(context, criteriaQuery, false, Relationship.class, -1, -1);
-        list.sort((o1, o2) -> o2.getLeftPlace() - o1.getLeftPlace());
+        list.sort((o1, o2) -> o2.getRightPlace() - o1.getRightPlace());
         if (!list.isEmpty()) {
-            return list.get(0).getLeftPlace();
+            return list.get(0).getRightPlace() + 1;
         } else {
-            return 1;
+            return 0;
         }
     }
 

dspace-api/src/main/java/org/dspace/content/service/BundleService.java

@@ -109,6 +109,31 @@ public interface BundleService extends DSpaceObjectService<Bundle>, DSpaceObject
 
     public List<ResourcePolicy> getBundlePolicies(Context context, Bundle bundle) throws SQLException;
 
+    /**
+     * Moves a bitstream within a bundle from one place to another, shifting all other bitstreams in the process
+     *
+     * @param context               DSpace Context
+     * @param bundle                The bitstream bundle
+     * @param from                  The index of the bitstream to move
+     * @param to                    The index to move the bitstream to
+     * @throws AuthorizeException   when an SQL error has occurred (querying DSpace)
+     * @throws SQLException         If the user can't make the changes
+     */
+    public void updateBitstreamOrder(Context context, Bundle bundle, int from, int to) throws AuthorizeException,
+            SQLException;
+
+    /**
+     * Moves a bitstream from its current bundle to a new target bundle
+     * @param context               DSpace Context
+     * @param targetBundle          The target bundle where bitstream will be moved to
+     * @param bitstream             The bitstream being moved
+     * @throws SQLException         if database error
+     * @throws AuthorizeException   if authorization error
+     * @throws IOException          if IO error
+     */
+    public void  moveBitstreamToBundle(Context context, Bundle targetBundle, Bitstream bitstream) throws SQLException,
+            AuthorizeException, IOException;
+
     /**
      * Changes bitstream order according to the array
      *

dspace-api/src/main/java/org/dspace/content/service/RelationshipService.java

@@ -74,26 +74,26 @@ public interface RelationshipService extends DSpaceCRUDService<Relationship> {
     public Relationship create(Context context, Relationship relationship) throws SQLException, AuthorizeException;
 
     /**
-     * Retrieves the highest integer value for the leftplace property of a Relationship for all relationships
-     * that have the given item as a left item
+     * This method returns the next leftplace integer to use for a relationship with this item as the leftItem
+     *
      * @param context   The relevant DSpace context
      * @param item      The item that has to be the leftItem of a relationship for it to qualify
-     * @return          The integer value of the highest left place property of all relationships
-     *                  that have the given item as a leftitem property
+     * @return          The next integer to be used for the leftplace of a relationship with the given item
+     *                  as a left item
      * @throws SQLException If something goes wrong
      */
-    int findLeftPlaceByLeftItem(Context context, Item item) throws SQLException;
+    int findNextLeftPlaceByLeftItem(Context context, Item item) throws SQLException;
 
     /**
-     * Retrieves the highest integer value for the rightplace property of a Relationship for all relationships
-     * that have the given item as a right item
+     * This method returns the next rightplace integer to use for a relationship with this item as the rightItem
+     *
      * @param context   The relevant DSpace context
      * @param item      The item that has to be the rightitem of a relationship for it to qualify
-     * @return          The integer value of the highest right place property of all relationships
-     *                  that have the given item as a rightitem property
+     * @return          The next integer to be used for the rightplace of a relationship with the given item
+     *                  as a right item
      * @throws SQLException If something goes wrong
      */
-    int findRightPlaceByRightItem(Context context, Item item) throws SQLException;
+    int findNextRightPlaceByRightItem(Context context, Item item) throws SQLException;
 
     /**
      * This method returns a list of Relationships for which the leftItem or rightItem is equal to the given
@@ -147,10 +147,9 @@ public interface RelationshipService extends DSpaceCRUDService<Relationship> {
      * @param context           The relevant DSpace context
      * @param relationship      The Relationship object that will have it's place updated and that will be used
      *                          to retrieve the other relationships whose place might need to be updated
-     * @param isCreation        Is the relationship new or did it already exist
      * @throws SQLException     If something goes wrong
      */
-    public void updatePlaceInRelationship(Context context, Relationship relationship, boolean isCreation)
+    public void updatePlaceInRelationship(Context context, Relationship relationship)
             throws SQLException, AuthorizeException;
 
     /**

dspace-api/src/main/java/org/dspace/discovery/IndexClient.java

@@ -13,11 +13,8 @@ import java.util.Iterator;
 import java.util.UUID;
 
 import org.apache.commons.cli.CommandLine;
-import org.apache.commons.cli.HelpFormatter;
-import org.apache.commons.cli.OptionBuilder;
 import org.apache.commons.cli.Options;
-import org.apache.commons.cli.PosixParser;
-import org.apache.logging.log4j.Logger;
+import org.apache.commons.cli.ParseException;
 import org.dspace.content.Collection;
 import org.dspace.content.Community;
 import org.dspace.content.Item;
@@ -26,103 +23,26 @@ import org.dspace.content.service.ItemService;
 import org.dspace.core.Constants;
 import org.dspace.core.Context;
 import org.dspace.handle.factory.HandleServiceFactory;
-import org.dspace.services.factory.DSpaceServicesFactory;
+import org.dspace.scripts.DSpaceRunnable;
+import org.springframework.beans.factory.annotation.Autowired;
 
 /**
  * Class used to reindex dspace communities/collections/items into discovery
- *
- * @author Kevin Van de Velde (kevin at atmire dot com)
- * @author Mark Diggory (markd at atmire dot com)
- * @author Ben Bosman (ben at atmire dot com)
  */
-public class IndexClient {
+public class IndexClient extends DSpaceRunnable {
 
-    private static final Logger log = org.apache.logging.log4j.LogManager.getLogger(IndexClient.class);
+    private Context context;
 
-    /**
-     * Default constructor
-     */
-    private IndexClient() { }
+    @Autowired
+    private IndexingService indexer;
 
-    /**
-     * When invoked as a command-line tool, creates, updates, removes content
-     * from the whole index
-     *
-     * @param args the command-line arguments, none used
-     * @throws SQLException           An exception that provides information on a database access error or other errors.
-     * @throws IOException            A general class of exceptions produced by failed or interrupted I/O operations.
-     * @throws SearchServiceException if something went wrong with querying the solr server
-     */
-    public static void main(String[] args) throws SQLException, IOException, SearchServiceException {
+    private IndexClientOptions indexClientOptions;
 
-        Context context = new Context(Context.Mode.READ_ONLY);
-        context.turnOffAuthorisationSystem();
-
-        String usage = "org.dspace.discovery.IndexClient [-cbhf] | [-r <handle>] | [-i <handle>] or nothing to " +
-                "update/clean an existing index.";
-        Options options = new Options();
-        HelpFormatter formatter = new HelpFormatter();
-        CommandLine line = null;
-
-        options.addOption(OptionBuilder
-                              .withArgName("handle to remove")
-                              .hasArg(true)
-                              .withDescription(
-                                  "remove an Item, Collection or Community from index based on its handle")
-                              .create("r"));
-
-        options.addOption(OptionBuilder
-                              .withArgName("handle or uuid to add or update")
-                              .hasArg(true)
-                              .withDescription(
-                                  "add or update an Item, Collection or Community based on its handle or uuid")
-                              .create("i"));
-
-        options.addOption(OptionBuilder
-                              .isRequired(false)
-                              .withDescription(
-                                  "clean existing index removing any documents that no longer exist in the db")
-                              .create("c"));
-
-        options.addOption(OptionBuilder
-                              .isRequired(false)
-                              .withDescription(
-                                  "(re)build index, wiping out current one if it exists")
-                              .create("b"));
-
-        options.addOption(OptionBuilder
-                              .isRequired(false)
-                              .withDescription(
-                                  "Rebuild the spellchecker, can be combined with -b and -f.")
-                              .create("s"));
-
-        options.addOption(OptionBuilder
-                              .isRequired(false)
-                              .withDescription(
-                                  "if updating existing index, force each handle to be reindexed even if uptodate")
-                              .create("f"));
-
-        options.addOption(OptionBuilder
-                              .isRequired(false)
-                              .withDescription(
-                                  "print this help message")
-                              .create("h"));
-
-        options.addOption(OptionBuilder.isRequired(false).withDescription(
-            "optimize search core").create("o"));
-
-        try {
-            line = new PosixParser().parse(options, args);
-        } catch (Exception e) {
-            // automatically generate the help statement
-            formatter.printHelp(usage, e.getMessage(), options, "");
-            System.exit(1);
-        }
-
-        if (line.hasOption("h")) {
-            // automatically generate the help statement
-            formatter.printHelp(usage, options);
-            System.exit(1);
+    @Override
+    public void internalRun() throws Exception {
+        if (indexClientOptions == IndexClientOptions.HELP) {
+            printHelp();
+            return;
         }
 
         /** Acquire from dspace-services in future */
@@ -130,28 +50,29 @@ public class IndexClient {
          * new DSpace.getServiceManager().getServiceByName("org.dspace.discovery.SolrIndexer");
          */
 
-        IndexingService indexer = DSpaceServicesFactory.getInstance().getServiceManager().getServiceByName(
-            IndexingService.class.getName(),
-            IndexingService.class
-        );
-
-        if (line.hasOption("r")) {
-            log.info("Removing " + line.getOptionValue("r") + " from Index");
-            indexer.unIndexContent(context, line.getOptionValue("r"));
-        } else if (line.hasOption("c")) {
-            log.info("Cleaning Index");
-            indexer.cleanIndex(line.hasOption("f"));
-        } else if (line.hasOption("b")) {
-            log.info("(Re)building index from scratch.");
+        if (indexClientOptions == IndexClientOptions.REMOVE) {
+            handler.logInfo("Removing " + commandLine.getOptionValue("r") + " from Index");
+            indexer.unIndexContent(context, commandLine.getOptionValue("r"));
+        } else if (indexClientOptions == IndexClientOptions.CLEAN) {
+            handler.logInfo("Cleaning Index");
+            indexer.cleanIndex(false);
+        } else if (indexClientOptions == IndexClientOptions.FORCECLEAN) {
+            handler.logInfo("Cleaning Index");
+            indexer.cleanIndex(true);
+        } else if (indexClientOptions == IndexClientOptions.BUILD ||
+            indexClientOptions == IndexClientOptions.BUILDANDSPELLCHECK) {
+            handler.logInfo("(Re)building index from scratch.");
             indexer.createIndex(context);
-            checkRebuildSpellCheck(line, indexer);
-        } else if (line.hasOption("o")) {
-            log.info("Optimizing search core.");
+            if (indexClientOptions == IndexClientOptions.BUILDANDSPELLCHECK) {
+                checkRebuildSpellCheck(commandLine, indexer);
+            }
+        } else if (indexClientOptions == IndexClientOptions.OPTIMIZE) {
+            handler.logInfo("Optimizing search core.");
             indexer.optimize();
-        } else if (line.hasOption('s')) {
-            checkRebuildSpellCheck(line, indexer);
-        } else if (line.hasOption('i')) {
-            final String param = line.getOptionValue('i');
+        } else if (indexClientOptions == IndexClientOptions.SPELLCHECK) {
+            checkRebuildSpellCheck(commandLine, indexer);
+        } else if (indexClientOptions == IndexClientOptions.INDEX) {
+            final String param = commandLine.getOptionValue('i');
             UUID uuid = null;
             try {
                 uuid = UUID.fromString(param);
@@ -171,24 +92,55 @@ public class IndexClient {
                 }
             } else {
                 dso = (IndexableObject) HandleServiceFactory.getInstance()
-                                .getHandleService().resolveToObject(context, param);
+                                                            .getHandleService().resolveToObject(context, param);
             }
             if (dso == null) {
                 throw new IllegalArgumentException("Cannot resolve " + param + " to a DSpace object");
             }
-            log.info("Indexing " + param + " force " + line.hasOption("f"));
+            handler.logInfo("Indexing " + param + " force " + commandLine.hasOption("f"));
             final long startTimeMillis = System.currentTimeMillis();
-            final long count = indexAll(indexer, ContentServiceFactory.getInstance().getItemService(), context, dso);
+            final long count = indexAll(indexer, ContentServiceFactory.getInstance().getItemService(), context,
+                                        dso);
             final long seconds = (System.currentTimeMillis() - startTimeMillis) / 1000;
-            log.info("Indexed " + count + " object" + (count > 1 ? "s" : "") + " in " + seconds + " seconds");
-        } else {
-            log.info("Updating and Cleaning Index");
-            indexer.cleanIndex(line.hasOption("f"));
-            indexer.updateIndex(context, line.hasOption("f"));
-            checkRebuildSpellCheck(line, indexer);
+            handler.logInfo("Indexed " + count + " object" + (count > 1 ? "s" : "") + " in " + seconds + " seconds");
+        } else if (indexClientOptions == IndexClientOptions.UPDATE ||
+            indexClientOptions == IndexClientOptions.UPDATEANDSPELLCHECK) {
+            handler.logInfo("Updating and Cleaning Index");
+            indexer.cleanIndex(false);
+            indexer.updateIndex(context, false);
+            if (indexClientOptions == IndexClientOptions.UPDATEANDSPELLCHECK) {
+                checkRebuildSpellCheck(commandLine, indexer);
+            }
+        } else if (indexClientOptions == IndexClientOptions.FORCEUPDATE ||
+            indexClientOptions == IndexClientOptions.FORCEUPDATEANDSPELLCHECK) {
+            handler.logInfo("Updating and Cleaning Index");
+            indexer.cleanIndex(true);
+            indexer.updateIndex(context, true);
+            if (indexClientOptions == IndexClientOptions.FORCEUPDATEANDSPELLCHECK) {
+                checkRebuildSpellCheck(commandLine, indexer);
+            }
         }
 
-        log.info("Done with indexing");
+        handler.logInfo("Done with indexing");
+    }
+
+    public void setup() throws ParseException {
+        try {
+            context = new Context(Context.Mode.READ_ONLY);
+            context.turnOffAuthorisationSystem();
+        } catch (Exception e) {
+            throw new ParseException("Unable to create a new DSpace Context: " + e.getMessage());
+        }
+
+        indexClientOptions = IndexClientOptions.getIndexClientOption(commandLine);
+    }
+
+    /**
+     * Constructor for this class. This will ensure that the Options are created and set appropriately.
+     */
+    private IndexClient() {
+        Options options = IndexClientOptions.constructOptions();
+        this.options = options;
     }
 
     /**
@@ -273,13 +225,12 @@ public class IndexClient {
      * @param line    the command line options
      * @param indexer the solr indexer
      * @throws SearchServiceException in case of a solr exception
-     * @throws java.io.IOException passed through
+     * @throws IOException passed through
      */
-    protected static void checkRebuildSpellCheck(CommandLine line, IndexingService indexer)
+    protected void checkRebuildSpellCheck(CommandLine line, IndexingService indexer)
         throws SearchServiceException, IOException {
-        if (line.hasOption("s")) {
-            log.info("Rebuilding spell checker.");
-            indexer.buildSpellCheck();
-        }
+        handler.logInfo("Rebuilding spell checker.");
+        indexer.buildSpellCheck();
     }
+
 }

dspace-api/src/main/java/org/dspace/discovery/IndexClientOptions.java

@@ -0,0 +1,97 @@
+/**
+ * The contents of this file are subject to the license and copyright
+ * detailed in the LICENSE and NOTICE files at the root of the source
+ * tree and available online at
+ *
+ * http://www.dspace.org/license/
+ */
+
+package org.dspace.discovery;
+
+import org.apache.commons.cli.CommandLine;
+import org.apache.commons.cli.Options;
+
+/**
+ * This Enum holds all the possible options and combinations for the Index discovery script
+ */
+public enum IndexClientOptions {
+    REMOVE,
+    CLEAN,
+    FORCECLEAN,
+    BUILD,
+    BUILDANDSPELLCHECK,
+    OPTIMIZE,
+    SPELLCHECK,
+    INDEX,
+    UPDATE,
+    FORCEUPDATE,
+    UPDATEANDSPELLCHECK,
+    FORCEUPDATEANDSPELLCHECK,
+    HELP;
+
+    /**
+     * This method resolves the CommandLine parameters to figure out which action the index-discovery script should
+     * perform
+     * @param commandLine   The relevant CommandLine for the index-discovery script
+     * @return              The index-discovery option to be ran, parsed from the CommandLine
+     */
+    protected static IndexClientOptions getIndexClientOption(CommandLine commandLine) {
+        if (commandLine.hasOption("h")) {
+            return IndexClientOptions.HELP;
+        } else if (commandLine.hasOption("r")) {
+            return IndexClientOptions.REMOVE;
+        } else if (commandLine.hasOption("c")) {
+            if (commandLine.hasOption("f")) {
+                return IndexClientOptions.FORCECLEAN;
+            } else {
+                return IndexClientOptions.CLEAN;
+            }
+        } else if (commandLine.hasOption("b")) {
+            if (commandLine.hasOption("s")) {
+                return IndexClientOptions.BUILDANDSPELLCHECK;
+            } else {
+                return IndexClientOptions.BUILD;
+            }
+        } else if (commandLine.hasOption("o")) {
+            return IndexClientOptions.OPTIMIZE;
+        } else if (commandLine.hasOption("s")) {
+            return IndexClientOptions.SPELLCHECK;
+        } else if (commandLine.hasOption("i")) {
+            return IndexClientOptions.INDEX;
+        } else {
+            if (commandLine.hasOption("f") && commandLine.hasOption("s")) {
+                return IndexClientOptions.FORCEUPDATEANDSPELLCHECK;
+            } else if (commandLine.hasOption("f")) {
+                return IndexClientOptions.FORCEUPDATE;
+            } else if (commandLine.hasOption("s")) {
+                return IndexClientOptions.UPDATEANDSPELLCHECK;
+            } else {
+                return IndexClientOptions.UPDATE;
+            }
+        }
+    }
+
+    protected static Options constructOptions() {
+        Options options = new Options();
+
+        options
+            .addOption("r", "remove", true, "remove an Item, Collection or Community from index based on its handle");
+        options.getOption("r").setType(String.class);
+        options.addOption("i", "index", true,
+                          "add or update an Item, Collection or Community based on its handle or uuid");
+        options.getOption("i").setType(boolean.class);
+        options.addOption("c", "clean", false,
+                          "clean existing index removing any documents that no longer exist in the db");
+        options.getOption("c").setType(boolean.class);
+        options.addOption("b", "build", false, "(re)build index, wiping out current one if it exists");
+        options.getOption("b").setType(boolean.class);
+        options.addOption("s", "spellchecker", false, "Rebuild the spellchecker, can be combined with -b and -f.");
+        options.getOption("s").setType(boolean.class);
+        options.addOption("f", "force", false,
+                          "if updating existing index, force each handle to be reindexed even if uptodate");
+        options.getOption("f").setType(boolean.class);
+        options.addOption("h", "help", false, "print this help message");
+        options.getOption("h").setType(boolean.class);
+        return options;
+    }
+}

dspace-api/src/main/java/org/dspace/handle/UpdateHandlePrefix.java

@@ -13,11 +13,11 @@ import java.sql.SQLException;
 import java.util.Iterator;
 
 import org.apache.logging.log4j.Logger;
+import org.dspace.app.launcher.ScriptLauncher;
 import org.dspace.content.MetadataValue;
 import org.dspace.content.factory.ContentServiceFactory;
 import org.dspace.content.service.MetadataValueService;
 import org.dspace.core.Context;
-import org.dspace.discovery.IndexClient;
 import org.dspace.handle.factory.HandleServiceFactory;
 import org.dspace.handle.service.HandleService;
 import org.dspace.services.ConfigurationService;
@@ -139,7 +139,7 @@ public class UpdateHandlePrefix {
 
                     try {
                         // Reinitialise the search and browse system
-                        IndexClient.main(new String[] {"-b"});
+                        ScriptLauncher.main(new String[] {"index-discovery", "-b"});
                         System.out.println("Browse and search indexes are ready now.");
                         // All done
                         System.out.println("\nAll done successfully. Please check the DSpace logs!\n");

dspace-api/src/main/java/org/dspace/scripts/DSpaceCommandLineParameter.java

@@ -0,0 +1,108 @@
+/**
+ * The contents of this file are subject to the license and copyright
+ * detailed in the LICENSE and NOTICE files at the root of the source
+ * tree and available online at
+ *
+ * http://www.dspace.org/license/
+ */
+package org.dspace.scripts;
+
+import java.util.List;
+import java.util.stream.Collectors;
+
+import org.apache.commons.lang3.StringUtils;
+
+/**
+ * This class serves as a representation of a command line parameter by holding a String name and a String value
+ */
+public class DSpaceCommandLineParameter {
+    private String name;
+    private String value;
+
+    public static String SEPARATOR = "|||";
+
+    /**
+     * This constructor will take a String key and String value and store them in their appriopriate fields
+     * @param key   The String value to be stored as the name of the parameter
+     * @param value The String value to be stored as the value of the parameter
+     */
+    public DSpaceCommandLineParameter(String key, String value) {
+        this.name = key;
+
+        if (StringUtils.isBlank(value)) {
+            this.value = null;
+        } else {
+            this.value = value;
+        }
+    }
+
+    /**
+     * This constructors accepts a single parameter String that is defined as e.g. "-c test" and it'll parse this
+     * String into the key "-c" and value "test" to then call the other constructor with those parameters
+     * @param parameter The String parameter
+     */
+    protected DSpaceCommandLineParameter(String parameter) {
+        this(StringUtils.substringBefore(parameter, " "), StringUtils.substringAfter(parameter, " "));
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String key) {
+        this.name = key;
+    }
+
+    public String getValue() {
+        return value;
+    }
+
+    public void setValue(String value) {
+        this.value = value;
+    }
+
+    /**
+     * Converts the DSpaceCommandLineParameter into a String format by concatenating the value and the name String
+     * values by separating them with a space
+     * @return The String representation of a DSpaceCommandlineParameter object
+     */
+    public String toString() {
+        String stringToReturn = "";
+        stringToReturn += getName();
+        if (StringUtils.isNotBlank(getValue())) {
+            stringToReturn += " ";
+            stringToReturn += getValue();
+        }
+        return stringToReturn;
+    }
+
+    /**
+     * This method will convert a list of DSpaceCommandLineParameter objects into a single String. This is done by
+     * calling the toString() method on each of the DSpaceCommandLineParameter objects in the list and concatenating
+     * them with the Separator defined in this class
+     * @param parameterList The list of DSpaceCommandLineParameter objects to be converted into a String
+     * @return              The resulting String
+     */
+    public static String concatenate(List<DSpaceCommandLineParameter> parameterList) {
+        if (parameterList.isEmpty()) {
+            return null;
+        }
+        return parameterList.stream().map(parameter -> parameter.toString()).collect(Collectors.joining(SEPARATOR));
+    }
+
+    /**
+     * Will return a boolean indicating whether the given param is equal to this object
+     * @param other The other object
+     * @return      A boolean indicating equality
+     */
+    public boolean equals(Object other) {
+        if (other == null) {
+            return false;
+        }
+        if (other.getClass() != DSpaceCommandLineParameter.class) {
+            return false;
+        }
+        return StringUtils.equals(this.getName(), ((DSpaceCommandLineParameter) other).getName()) && StringUtils
+            .equals(this.getValue(), ((DSpaceCommandLineParameter) other).getValue());
+    }
+}

dspace-api/src/main/java/org/dspace/scripts/DSpaceRunnable.java

@@ -0,0 +1,156 @@
+/**
+ * The contents of this file are subject to the license and copyright
+ * detailed in the LICENSE and NOTICE files at the root of the source
+ * tree and available online at
+ *
+ * http://www.dspace.org/license/
+ */
+package org.dspace.scripts;
+
+import java.sql.SQLException;
+
+import org.apache.commons.cli.CommandLine;
+import org.apache.commons.cli.DefaultParser;
+import org.apache.commons.cli.Options;
+import org.apache.commons.cli.ParseException;
+import org.dspace.authorize.service.AuthorizeService;
+import org.dspace.core.Context;
+import org.dspace.scripts.handler.DSpaceRunnableHandler;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Required;
+
+/**
+ * This abstract class is the class that should be extended by each script.
+ * it provides the basic variables to be hold by the script as well as the means to initialize, parse and run the script
+ * Every DSpaceRunnable that is implemented in this way should be defined in the scripts.xml config file as a bean
+ */
+public abstract class DSpaceRunnable implements Runnable {
+
+    /**
+     * The name of the script
+     */
+    private String name;
+    /**
+     * The description of the script
+     */
+    private String description;
+    /**
+     * The CommandLine object for the script that'll hold the information
+     */
+    protected CommandLine commandLine;
+    /**
+     * The possible options for this script
+     */
+    protected Options options;
+    /**
+     * The handler that deals with this script. This handler can currently either be a RestDSpaceRunnableHandler or
+     *  a CommandlineDSpaceRunnableHandler depending from where the script is called
+     */
+    protected DSpaceRunnableHandler handler;
+
+    @Autowired
+    private AuthorizeService authorizeService;
+
+    public String getName() {
+        return name;
+    }
+
+    @Required
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    @Required
+    public void setDescription(String description) {
+        this.description = description;
+    }
+
+    public Options getOptions() {
+        return options;
+    }
+
+    /**
+     * This method will take the primitive array of String objects that represent the parameters given to the String
+     * and it'll parse these into a CommandLine object that can be used by the script to retrieve the data
+     * @param args              The primitive array of Strings representing the parameters
+     * @throws ParseException   If something goes wrong
+     */
+    private void parse(String[] args) throws ParseException {
+        commandLine = new DefaultParser().parse(getOptions(), args);
+        setup();
+    }
+
+    /**
+     * This method will call upon the {@link DSpaceRunnableHandler#printHelp(Options, String)} method with the script's
+     * options and name
+     */
+    public void printHelp() {
+        handler.printHelp(options, name);
+    }
+
+
+    /**
+     * This is the run() method from the Runnable interface that we implement. This method will handle the running
+     * of the script and all the database modifications needed for the Process object that resulted from this script
+     */
+    @Override
+    public void run() {
+        try {
+            handler.start();
+            internalRun();
+            handler.handleCompletion();
+        } catch (Exception e) {
+            handler.handleException(e);
+        }
+    }
+
+    private void setHandler(DSpaceRunnableHandler dSpaceRunnableHandler) {
+        this.handler = dSpaceRunnableHandler;
+    }
+
+    /**
+     * This method sets the appropriate DSpaceRunnableHandler depending on where it was ran from and it parses
+     * the arguments given to the script
+     * @param args                  The arguments given to the script
+     * @param dSpaceRunnableHandler The DSpaceRunnableHandler object that defines from where the script was ran
+     * @throws ParseException       If something goes wrong
+     */
+    public void initialize(String[] args, DSpaceRunnableHandler dSpaceRunnableHandler) throws ParseException {
+        this.setHandler(dSpaceRunnableHandler);
+        this.parse(args);
+    }
+
+    /**
+     * This method has to be included in every script and this will be the main execution block for the script that'll
+     * contain all the logic needed
+     * @throws Exception    If something goes wrong
+     */
+    public abstract void internalRun() throws Exception;
+
+    /**
+     * This method has to be included in every script and handles the setup of the script by parsing the CommandLine
+     * and setting the variables
+     * @throws ParseException   If something goes wrong
+     */
+    public abstract void setup() throws ParseException;
+
+    /**
+     * This method will return if the script is allowed to execute in the given context. This is by default set
+     * to the currentUser in the context being an admin, however this can be overwritten by each script individually
+     * if different rules apply
+     * @param context   The relevant DSpace context
+     * @return          A boolean indicating whether the script is allowed to execute or not
+     */
+    public boolean isAllowedToExecute(Context context) {
+        try {
+            return authorizeService.isAdmin(context);
+        } catch (SQLException e) {
+            handler.logError("Error occured when trying to verify permissions for script: " + name);
+        }
+        return false;
+    }
+}

dspace-api/src/main/java/org/dspace/scripts/Process.java

@@ -0,0 +1,242 @@
+/**
+ * The contents of this file are subject to the license and copyright
+ * detailed in the LICENSE and NOTICE files at the root of the source
+ * tree and available online at
+ *
+ * http://www.dspace.org/license/
+ */
+package org.dspace.scripts;
+
+import java.util.Date;
+import java.util.List;
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.EnumType;
+import javax.persistence.Enumerated;
+import javax.persistence.FetchType;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.JoinColumn;
+import javax.persistence.JoinTable;
+import javax.persistence.ManyToMany;
+import javax.persistence.ManyToOne;
+import javax.persistence.SequenceGenerator;
+import javax.persistence.Table;
+import javax.persistence.Temporal;
+import javax.persistence.TemporalType;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+import org.dspace.content.Bitstream;
+import org.dspace.content.ProcessStatus;
+import org.dspace.core.ReloadableEntity;
+import org.dspace.eperson.EPerson;
+
+/**
+ * This class is the DB Entity representation of the Process object to be stored in the Database
+ */
+@Entity
+@Table(name = "process")
+public class Process implements ReloadableEntity<Integer> {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "process_id_seq")
+    @SequenceGenerator(name = "process_id_seq", sequenceName = "process_id_seq", allocationSize = 1)
+    @Column(name = "process_id", unique = true, nullable = false)
+    private Integer processId;
+
+    @ManyToOne
+    @JoinColumn(name = "user_id", nullable = false)
+    private EPerson ePerson;
+
+    @Column(name = "start_time")
+    @Temporal(TemporalType.TIMESTAMP)
+    private Date startTime;
+
+    @Column(name = "finished_time")
+    @Temporal(TemporalType.TIMESTAMP)
+    private Date finishedTime;
+
+    @Column(name = "script", nullable = false)
+    private String name;
+
+    @Column(name = "status")
+    @Enumerated(EnumType.STRING)
+    private ProcessStatus processStatus;
+
+    @Column(name = "parameters")
+    private String parameters;
+
+    @ManyToMany(fetch = FetchType.LAZY)
+    @JoinTable(
+        name = "process2bitstream",
+        joinColumns = {@JoinColumn(name = "process_id")},
+        inverseJoinColumns = {@JoinColumn(name = "bitstream_id")}
+    )
+    private List<Bitstream> bitstreams;
+
+    @Column(name = "creation_time", nullable = false)
+    @Temporal(TemporalType.TIMESTAMP)
+    private Date creationTime;
+
+    protected Process() {
+    }
+
+    /**
+     * This method returns the ID that the Process holds within the Database
+     * @return  The ID that the process holds within the database
+     */
+    public Integer getID() {
+        return processId;
+    }
+
+    public void setProcessId(Integer processId) {
+        this.processId = processId;
+    }
+
+    /**
+     * This method returns an EPerson object. This EPerson object is the EPerson that initially created the process
+     * @return  The EPerson that created the process
+     */
+    public EPerson getEPerson() {
+        return ePerson;
+    }
+
+    public void setEPerson(EPerson ePerson) {
+        this.ePerson = ePerson;
+    }
+
+    /**
+     * This method returns the Start time for the Process. This reflects the time when the Process was actually started
+     * @return  The start time for the Process
+     */
+    public Date getStartTime() {
+        return startTime;
+    }
+
+    public void setStartTime(Date startTime) {
+        this.startTime = startTime;
+    }
+
+    /**
+     * This method returns the time that Process was finished
+     * @return  The finished time for the Process
+     */
+    public Date getFinishedTime() {
+        return finishedTime;
+    }
+
+    public void setFinishedTime(Date finishedTime) {
+        this.finishedTime = finishedTime;
+    }
+
+    /**
+     * This method returns the name of the Process. For example filter-media
+     * @return  The name of the Process
+     */
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    /**
+     * This method returns a ProcessStatus value that represents the current state of the Process. These values
+     * can be found within the {@link ProcessStatus} enum
+     * @return  The status of the Process
+     */
+    public ProcessStatus getProcessStatus() {
+        return processStatus;
+    }
+
+    public void setProcessStatus(ProcessStatus processStatus) {
+        this.processStatus = processStatus;
+    }
+
+    /**
+     * To get the parameters, use ProcessService.getParameters() to get a parsed list of DSpaceCommandLineParameters
+     * This String representation is the parameter in an unparsed fashion. For example "-c test"
+     */
+    protected String getParameters() {
+        return parameters;
+    }
+
+    public void setParameters(String parameters) {
+        this.parameters = parameters;
+    }
+
+    /**
+     * This method returns a list of Bitstreams that will be used or created by the Process. This list contains both
+     * input and output bitstreams.
+     * @return  The Bitstreams that are used or created by the process
+     */
+    public List<Bitstream> getBitstreams() {
+        return bitstreams;
+    }
+
+    public void setBitstreams(List<Bitstream> bitstreams) {
+        this.bitstreams = bitstreams;
+    }
+
+    public void removeBitstream(Bitstream bitstream) {
+        getBitstreams().remove(bitstream);
+    }
+
+    public void addBitstream(Bitstream bitstream) {
+        getBitstreams().add(bitstream);
+    }
+
+    public void setCreationTime(Date creationTime) {
+        this.creationTime = creationTime;
+    }
+
+    /**
+     * This method will return the time when the Process was created. Note that this is potentially different from
+     * the StartTime (for example if the Process was queued)
+     * @return  The creation time of the Process
+     */
+    public Date getCreationTime() {
+        return creationTime;
+    }
+
+    /**
+     * Return <code>true</code> if <code>other</code> is the same Process
+     * as this object, <code>false</code> otherwise
+     *
+     * @param other object to compare to
+     * @return <code>true</code> if object passed in represents the same
+     * collection as this object
+     */
+    @Override
+    public boolean equals(Object other) {
+        return (other instanceof Process &&
+            new EqualsBuilder().append(this.getID(), ((Process) other).getID())
+                               .append(this.getName(), ((Process) other).getName())
+                               .append(this.getBitstreams(), ((Process) other).getBitstreams())
+                               .append(this.getProcessStatus(), ((Process) other).getProcessStatus())
+                               .append(this.getFinishedTime(), ((Process) other).getFinishedTime())
+                               .append(this.getStartTime(), ((Process) other).getStartTime())
+                               .append(this.getParameters(), ((Process) other).getParameters())
+                               .append(this.getCreationTime(), ((Process) other).getCreationTime())
+                               .append(this.getEPerson(), ((Process) other).getEPerson())
+                               .isEquals());
+    }
+
+    @Override
+    public int hashCode() {
+        return new HashCodeBuilder(17, 37)
+            .append(this.getID())
+            .append(this.getName())
+            .append(this.getBitstreams())
+            .append(this.getProcessStatus())
+            .append(this.getFinishedTime())
+            .append(this.getStartTime())
+            .append(this.getParameters())
+            .append(this.getCreationTime())
+            .append(this.getEPerson())
+            .toHashCode();
+    }
+}

dspace-api/src/main/java/org/dspace/scripts/ProcessServiceImpl.java

@@ -0,0 +1,148 @@
+/**
+ * The contents of this file are subject to the license and copyright
+ * detailed in the LICENSE and NOTICE files at the root of the source
+ * tree and available online at
+ *
+ * http://www.dspace.org/license/
+ */
+package org.dspace.scripts;
+
+import java.sql.SQLException;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.Date;
+import java.util.List;
+import java.util.regex.Pattern;
+
+import org.apache.commons.lang3.StringUtils;
+import org.apache.logging.log4j.Logger;
+import org.dspace.content.ProcessStatus;
+import org.dspace.content.dao.ProcessDAO;
+import org.dspace.core.Context;
+import org.dspace.core.LogManager;
+import org.dspace.eperson.EPerson;
+import org.dspace.scripts.service.ProcessService;
+import org.springframework.beans.factory.annotation.Autowired;
+
+/**
+ * The implementation for the {@link ProcessService} class
+ */
+public class ProcessServiceImpl implements ProcessService {
+
+    private static final Logger log = org.apache.logging.log4j.LogManager.getLogger(ProcessService.class);
+
+    @Autowired
+    private ProcessDAO processDAO;
+
+    @Override
+    public Process create(Context context, EPerson ePerson, String scriptName,
+                          List<DSpaceCommandLineParameter> parameters) throws SQLException {
+
+        Process process = new Process();
+        process.setEPerson(ePerson);
+        process.setName(scriptName);
+        process.setParameters(DSpaceCommandLineParameter.concatenate(parameters));
+        process.setCreationTime(new Date());
+        Process createdProcess = processDAO.create(context, process);
+        log.info(LogManager.getHeader(context, "process_create",
+                                      "Process has been created for eperson with email " + ePerson.getEmail()
+                                          + " with ID " + createdProcess.getID() + " and scriptName " +
+                                          scriptName + " and parameters " + parameters));
+        return createdProcess;
+    }
+
+    @Override
+    public Process find(Context context, int processId) throws SQLException {
+        return processDAO.findByID(context, Process.class, processId);
+    }
+
+    @Override
+    public List<Process> findAll(Context context) throws SQLException {
+        return processDAO.findAll(context, Process.class);
+    }
+
+    @Override
+    public List<Process> findAll(Context context, int limit, int offset) throws SQLException {
+        return processDAO.findAll(context, limit, offset);
+    }
+
+    @Override
+    public List<Process> findAllSortByScript(Context context) throws SQLException {
+        return processDAO.findAllSortByScript(context);
+    }
+
+    @Override
+    public List<Process> findAllSortByStartTime(Context context) throws SQLException {
+        List<Process> processes = findAll(context);
+        Comparator<Process> comparing = Comparator
+            .comparing(Process::getStartTime, Comparator.nullsLast(Comparator.naturalOrder()));
+        comparing = comparing.thenComparing(Process::getID);
+        processes.sort(comparing);
+        return processes;
+    }
+
+    @Override
+    public void start(Context context, Process process) throws SQLException {
+        process.setProcessStatus(ProcessStatus.RUNNING);
+        process.setStartTime(new Date());
+        update(context, process);
+        log.info(LogManager.getHeader(context, "process_start", "Process with ID " + process.getID()
+            + " and name " + process.getName() + " has started"));
+
+    }
+
+    @Override
+    public void fail(Context context, Process process) throws SQLException {
+        process.setProcessStatus(ProcessStatus.FAILED);
+        process.setFinishedTime(new Date());
+        update(context, process);
+        log.info(LogManager.getHeader(context, "process_fail", "Process with ID " + process.getID()
+            + " and name " + process.getName() + " has failed"));
+
+    }
+
+    @Override
+    public void complete(Context context, Process process) throws SQLException {
+        process.setProcessStatus(ProcessStatus.COMPLETED);
+        process.setFinishedTime(new Date());
+        update(context, process);
+        log.info(LogManager.getHeader(context, "process_complete", "Process with ID " + process.getID()
+            + " and name " + process.getName() + " has been completed"));
+
+    }
+
+    @Override
+    public void delete(Context context, Process process) throws SQLException {
+        processDAO.delete(context, process);
+        log.info(LogManager.getHeader(context, "process_delete", "Process with ID " + process.getID()
+            + " and name " + process.getName() + " has been deleted"));
+
+    }
+
+    @Override
+    public void update(Context context, Process process) throws SQLException {
+        processDAO.save(context, process);
+    }
+
+    @Override
+    public List<DSpaceCommandLineParameter> getParameters(Process process) {
+        if (StringUtils.isBlank(process.getParameters())) {
+            return Collections.emptyList();
+        }
+
+        String[] parameterArray = process.getParameters().split(Pattern.quote(DSpaceCommandLineParameter.SEPARATOR));
+        List<DSpaceCommandLineParameter> parameterList = new ArrayList<>();
+
+        for (String parameter : parameterArray) {
+            parameterList.add(new DSpaceCommandLineParameter(parameter));
+        }
+
+        return parameterList;
+    }
+
+    public int countTotal(Context context) throws SQLException {
+        return processDAO.countRows(context);
+    }
+
+}

dspace-api/src/main/java/org/dspace/scripts/ScriptServiceImpl.java

@@ -0,0 +1,39 @@
+/**
+ * The contents of this file are subject to the license and copyright
+ * detailed in the LICENSE and NOTICE files at the root of the source
+ * tree and available online at
+ *
+ * http://www.dspace.org/license/
+ */
+package org.dspace.scripts;
+
+import java.util.List;
+import java.util.stream.Collectors;
+
+import org.apache.commons.lang3.StringUtils;
+import org.dspace.core.Context;
+import org.dspace.scripts.service.ScriptService;
+import org.springframework.beans.factory.annotation.Autowired;
+
+/**
+ * The implementation for the {@link ScriptService}
+ */
+public class ScriptServiceImpl implements ScriptService {
+
+    @Autowired
+    private List<DSpaceRunnable> dSpaceRunnables;
+
+    @Override
+    public DSpaceRunnable getScriptForName(String name) {
+        return dSpaceRunnables.stream()
+                              .filter(dSpaceRunnable -> StringUtils.equalsIgnoreCase(dSpaceRunnable.getName(), name))
+                              .findFirst()
+                              .orElse(null);
+    }
+
+    @Override
+    public List<DSpaceRunnable> getDSpaceRunnables(Context context) {
+        return dSpaceRunnables.stream().filter(
+            dSpaceRunnable -> dSpaceRunnable.isAllowedToExecute(context)).collect(Collectors.toList());
+    }
+}

dspace-api/src/main/java/org/dspace/scripts/factory/ScriptServiceFactory.java

@@ -0,0 +1,41 @@
+/**
+ * The contents of this file are subject to the license and copyright
+ * detailed in the LICENSE and NOTICE files at the root of the source
+ * tree and available online at
+ *
+ * http://www.dspace.org/license/
+ */
+package org.dspace.scripts.factory;
+
+import org.dspace.scripts.service.ProcessService;
+import org.dspace.scripts.service.ScriptService;
+import org.dspace.services.factory.DSpaceServicesFactory;
+
+/**
+ * Abstract factory to get services for the Script workload, use ScriptServiceFactory.getInstance() to retrieve an
+ * implementation
+ *
+ */
+public abstract class ScriptServiceFactory {
+
+    /**
+     * This method will return an instance of the ScriptService
+     * @return An instance of the ScriptService
+     */
+    public abstract ScriptService getScriptService();
+
+    /**
+     * This method will return an instance of the ProcessService
+     * @return  An instance of the ProcessService
+     */
+    public abstract ProcessService getProcessService();
+
+    /**
+     * Use this method to retrieve an implementation of the ScriptServiceFactory to use to retrieve the different beans
+     * @return An implementation of the ScriptServiceFactory
+     */
+    public static ScriptServiceFactory getInstance() {
+        return DSpaceServicesFactory.getInstance().getServiceManager()
+                                    .getServiceByName("scriptServiceFactory", ScriptServiceFactory.class);
+    }
+}

dspace-api/src/main/java/org/dspace/scripts/factory/impl/ScriptServiceFactoryImpl.java

@@ -0,0 +1,35 @@
+/**
+ * The contents of this file are subject to the license and copyright
+ * detailed in the LICENSE and NOTICE files at the root of the source
+ * tree and available online at
+ *
+ * http://www.dspace.org/license/
+ */
+package org.dspace.scripts.factory.impl;
+
+import org.dspace.scripts.factory.ScriptServiceFactory;
+import org.dspace.scripts.service.ProcessService;
+import org.dspace.scripts.service.ScriptService;
+import org.springframework.beans.factory.annotation.Autowired;
+
+/**
+ * The implementation for the {@link ScriptServiceFactory}
+ */
+public class ScriptServiceFactoryImpl extends ScriptServiceFactory {
+
+    @Autowired(required = true)
+    private ScriptService scriptService;
+
+    @Autowired(required = true)
+    private ProcessService processService;
+
+    @Override
+    public ScriptService getScriptService() {
+        return scriptService;
+    }
+
+    @Override
+    public ProcessService getProcessService() {
+        return processService;
+    }
+}

dspace-api/src/main/java/org/dspace/scripts/handler/DSpaceRunnableHandler.java

@@ -0,0 +1,81 @@
+/**
+ * The contents of this file are subject to the license and copyright
+ * detailed in the LICENSE and NOTICE files at the root of the source
+ * tree and available online at
+ *
+ * http://www.dspace.org/license/
+ */
+package org.dspace.scripts.handler;
+
+import java.sql.SQLException;
+
+import org.apache.commons.cli.Options;
+
+/**
+ * This is an interface meant to be implemented by any DSpaceRunnableHandler to specify specific execution methods
+ * of the script depending on where it was called from
+ */
+public interface DSpaceRunnableHandler {
+
+    /**
+     * This method handles the start of the script
+     * @throws SQLException If something goes wrong
+     */
+    public void start() throws SQLException;
+
+    /**
+     * This method handles the completion of the script
+     * @throws SQLException If something goes wrong
+     */
+    public void handleCompletion() throws SQLException;
+
+    /**
+     * This method handles an exception thrown by the script
+     * @param e The exception thrown by the script
+     */
+    public void handleException(Exception e);
+
+    /**
+     * This method handles an exception thrown by the script
+     * @param message   The String message for the exception thrown by the script
+     */
+    public void handleException(String message);
+
+    /**
+     * This method handles an exception thrown by the script
+     * @param message   The String message for the exception thrown by the script
+     * @param e         The exception thrown by the script
+     */
+    public void handleException(String message, Exception e);
+
+    /**
+     * This method will perform the debug logging of the message given
+     * @param message   The message to be logged as debug
+     */
+    public void logDebug(String message);
+
+    /**
+     * This method will perform the info logging of the message given
+     * @param message   The message to be logged as info
+     */
+    public void logInfo(String message);
+
+    /**
+     * This method will perform the warning logging of the message given
+     * @param message   The message to be logged as warning
+     */
+    public void logWarning(String message);
+
+    /**
+     * This method will perform the error logging of the message given
+     * @param message   The message to be logged as an error
+     */
+    public void logError(String message);
+
+    /**
+     * This method will print the help for the options and name
+     * @param options   The options for the script
+     * @param name      The name of the script
+     */
+    public void printHelp(Options options, String name);
+}

dspace-api/src/main/java/org/dspace/scripts/handler/impl/CommandLineDSpaceRunnableHandler.java

@@ -0,0 +1,87 @@
+/**
+ * The contents of this file are subject to the license and copyright
+ * detailed in the LICENSE and NOTICE files at the root of the source
+ * tree and available online at
+ *
+ * http://www.dspace.org/license/
+ */
+package org.dspace.scripts.handler.impl;
+
+import org.apache.commons.cli.HelpFormatter;
+import org.apache.commons.cli.Options;
+import org.apache.logging.log4j.Logger;
+import org.dspace.scripts.handler.DSpaceRunnableHandler;
+
+/**
+ * This is an implementation for the CommandLineDSpaceRunnables which means that these implementations
+ * are used by DSpaceRunnables which are called from the CommandLine
+ */
+public class CommandLineDSpaceRunnableHandler implements DSpaceRunnableHandler {
+    private static final Logger log = org.apache.logging.log4j.LogManager
+        .getLogger(CommandLineDSpaceRunnableHandler.class);
+
+    @Override
+    public void start() {
+        System.out.println("The script has started");
+    }
+
+    @Override
+    public void handleCompletion() {
+        System.out.println("The script has completed");
+    }
+
+    @Override
+    public void handleException(Exception e) {
+        handleException(null, e);
+    }
+
+    @Override
+    public void handleException(String message) {
+        handleException(message, null);
+    }
+
+    @Override
+    public void handleException(String message, Exception e) {
+        if (message != null) {
+            System.err.println(message);
+            log.error(message);
+        }
+        if (e != null) {
+            e.printStackTrace();
+            log.error(e.getMessage(), e);
+        }
+
+        System.exit(1);
+    }
+
+    @Override
+    public void logDebug(String message) {
+        log.debug(message);
+    }
+
+    @Override
+    public void logInfo(String message) {
+        System.out.println(message);
+        log.info(message);
+    }
+
+    @Override
+    public void logWarning(String message) {
+        System.out.println(message);
+        log.warn(message);
+    }
+
+    @Override
+    public void logError(String message) {
+        System.err.println(message);
+        log.error(message);
+    }
+
+    @Override
+    public void printHelp(Options options, String name) {
+        if (options != null) {
+            HelpFormatter formatter = new HelpFormatter();
+            formatter.printHelp(name, options);
+        }
+    }
+}

dspace-api/src/main/java/org/dspace/scripts/service/ProcessService.java

@@ -0,0 +1,139 @@
+/**
+ * The contents of this file are subject to the license and copyright
+ * detailed in the LICENSE and NOTICE files at the root of the source
+ * tree and available online at
+ *
+ * http://www.dspace.org/license/
+ */
+package org.dspace.scripts.service;
+
+import java.sql.SQLException;
+import java.util.List;
+
+import org.dspace.core.Context;
+import org.dspace.eperson.EPerson;
+import org.dspace.scripts.DSpaceCommandLineParameter;
+import org.dspace.scripts.Process;
+
+/**
+ * An interface for the ProcessService with methods regarding the Process workload
+ */
+public interface ProcessService {
+
+    /**
+     * This method will create a Process object in the database
+     * @param context       The relevant DSpace context
+     * @param ePerson       The ePerson for which this process will be created on
+     * @param scriptName    The script name to be used for the process
+     * @param parameters    The parameters to be used for the process
+     * @return The created process
+     * @throws SQLException If something goes wrong
+     */
+    public Process create(Context context, EPerson ePerson, String scriptName,
+                          List<DSpaceCommandLineParameter> parameters) throws SQLException;
+
+    /**
+     * This method will retrieve a Process object from the Database with the given ID
+     * @param context   The relevant DSpace context
+     * @param processId The process id on which we'll search for in the database
+     * @return The process that holds the given process id
+     * @throws SQLException If something goes wrong
+     */
+    public Process find(Context context, int processId) throws SQLException;
+
+    /**
+     * Returns a list of all Process objects in the database
+     * @param context   The relevant DSpace context
+     * @return The list of all Process objects in the Database
+     * @throws SQLException If something goes wrong
+     */
+    public List<Process> findAll(Context context) throws SQLException;
+
+    /**
+     * Returns a list of all Process objects in the database
+     * @param context   The relevant DSpace context
+     * @param limit     The limit for the amount of Processes returned
+     * @param offset    The offset for the Processes to be returned
+     * @return The list of all Process objects in the Database
+     * @throws SQLException If something goes wrong
+     */
+    public List<Process> findAll(Context context, int limit, int offset) throws SQLException;
+
+
+    /**
+     * Returns a list of all Process objects in the database sorted by script name
+     * @param context   The relevant DSpace context
+     * @return The list of all Process objects in the database sorted by script name
+     * @throws SQLException If something goes wrong
+     */
+    public List<Process> findAllSortByScript(Context context) throws SQLException;
+
+    /**
+     * Returns a list of all Process objects in the database sorted by start time
+     * The most recent one will be shown first
+     * @param context   The relevant DSpace context
+     * @return The list of all Process objects sorted by start time
+     * @throws SQLException If something goes wrong
+     */
+    public List<Process> findAllSortByStartTime(Context context) throws SQLException;
+
+    /**
+     * This method will perform the logic needed to update the Process object in the database to represent a
+     * started state. A started state refers to {@link org.dspace.content.ProcessStatus#RUNNING}
+     * @param context   The relevant DSpace context
+     * @param process   The Process object to be updated
+     * @throws SQLException If something goes wrong
+     */
+    public void start(Context context, Process process) throws SQLException;
+
+    /**
+     * This method will perform the logic needed to update the Process object in the database to represent
+     * a failed state
+     * @param context   The relevant DSpace context
+     * @param process   The Process object to be updated
+     * @throws SQLException If something goes wrong
+     */
+    public void fail(Context context, Process process) throws SQLException;
+
+    /**
+     * This method will perform the logic needed to update the Process object in the database to represent
+     * a complete state
+     * @param context   The relevant DSpace context
+     * @param process   The Process object to be updated
+     * @throws SQLException If something goes wrong
+     */
+    public void complete(Context context, Process process) throws SQLException;
+
+    /**
+     * This method will delete the given Process object from the database
+     * @param context   The relevant DSpace context
+     * @param process   The Process object to be deleted
+     * @throws SQLException If something goes wrong
+     */
+    public void delete(Context context, Process process) throws SQLException;
+
+    /**
+     * This method will be used to update the given Process object in the database
+     * @param context   The relevant DSpace context
+     * @param process   The Process object to be updated
+     * @throws SQLException If something goes wrong
+     */
+    public void update(Context context, Process process) throws SQLException;
+
+    /**
+     * This method will retrieve the list of parameters from the Process in its String format and it will parse
+     * these parameters to a list of {@link DSpaceCommandLineParameter} objects for better usability throughout DSpace
+     * @param process   The Process object for which we'll return the parameters
+     * @return The list of parsed parameters from the Process object
+     */
+    public List<DSpaceCommandLineParameter> getParameters(Process process);
+
+    /**
+     * Returns the total amount of Process objects in the dataase
+     * @param context   The relevant DSpace context
+     * @return          An integer that describes the amount of Process objects in the database
+     * @throws SQLException If something goes wrong
+     */
+    int countTotal(Context context) throws SQLException;
+
+}

dspace-api/src/main/java/org/dspace/scripts/service/ScriptService.java

@@ -0,0 +1,33 @@
+/**
+ * The contents of this file are subject to the license and copyright
+ * detailed in the LICENSE and NOTICE files at the root of the source
+ * tree and available online at
+ *
+ * http://www.dspace.org/license/
+ */
+package org.dspace.scripts.service;
+
+import java.util.List;
+
+import org.dspace.core.Context;
+import org.dspace.scripts.DSpaceRunnable;
+
+/**
+ * This service will deal with logic to handle DSpaceRunnable objects
+ */
+public interface ScriptService {
+
+    /**
+     * This method will return the DSpaceRunnable that has the name that's equal to the name given in the parameters
+     * @param name  The name that the script has to match
+     * @return      The matching DSpaceRunnable script
+     */
+    DSpaceRunnable getScriptForName(String name);
+
+    /**
+     * This method will return a list of DSpaceRunnable objects for which the given Context is authorized to use them
+     * @param context   The relevant DSpace context
+     * @return          The list of accessible DSpaceRunnable scripts for this context
+     */
+    List<DSpaceRunnable> getDSpaceRunnables(Context context);
+}

dspace-api/src/main/resources/org/dspace/storage/rdbms/sqlmigration/h2/V6.0_2015.03.07__DS-2701_Hibernate_migration.sql

@@ -189,16 +189,19 @@ ALTER TABLE item2bundle add primary key (item_id,bundle_id);
 --Migrate Bundle2Bitsteam
 ALTER TABLE bundle2bitstream ALTER COLUMN bundle_id rename to bundle_legacy_id;
 ALTER TABLE bundle2bitstream ALTER COLUMN bitstream_id rename to bitstream_legacy_id;
+ALTER TABLE bundle2bitstream ALTER COLUMN bitstream_order rename to bitstream_order_legacy;
 ALTER TABLE bundle2bitstream ADD COLUMN bundle_id UUID NOT NULL;
 ALTER TABLE bundle2bitstream ADD CONSTRAINT bundle2bitstream_bundle_id_fk FOREIGN KEY (bundle_id) REFERENCES bundle;
 ALTER TABLE bundle2bitstream ADD COLUMN bitstream_id UUID NOT NULL;
 ALTER TABLE bundle2bitstream ADD CONSTRAINT bundle2bitstream_bitstream_id_fk FOREIGN KEY (bitstream_id) REFERENCES bitstream;
+ALTER TABLE bundle2bitstream ADD COLUMN bitstream_order INTEGER NOT NULL;
 UPDATE bundle2bitstream SET bundle_id = (SELECT bundle.uuid FROM bundle WHERE bundle2bitstream.bundle_legacy_id = bundle.bundle_id);
 UPDATE bundle2bitstream SET bitstream_id = (SELECT bitstream.uuid FROM bitstream WHERE bundle2bitstream.bitstream_legacy_id = bitstream.bitstream_id);
 ALTER TABLE bundle2bitstream DROP COLUMN bundle_legacy_id;
 ALTER TABLE bundle2bitstream DROP COLUMN bitstream_legacy_id;
+ALTER TABLE bundle2bitstream DROP COLUMN bitstream_order_legacy;
 ALTER TABLE bundle2bitstream DROP COLUMN id;
-ALTER TABLE bundle2bitstream add primary key (bitstream_id,bundle_id);
+ALTER TABLE bundle2bitstream add primary key (bitstream_id,bundle_id,bitstream_order);
 
 
 -- Migrate item

dspace-api/src/main/resources/org/dspace/storage/rdbms/sqlmigration/h2/V7.0_2019_06_14__scripts-and-process.sql

@@ -0,0 +1,40 @@
+--
+-- The contents of this file are subject to the license and copyright
+-- detailed in the LICENSE and NOTICE files at the root of the source
+-- tree and available online at
+--
+-- http://www.dspace.org/license/
+--
+
+-- ===============================================================
+-- WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
+--
+-- DO NOT MANUALLY RUN THIS DATABASE MIGRATION. IT WILL BE EXECUTED
+-- AUTOMATICALLY (IF NEEDED) BY "FLYWAY" WHEN YOU STARTUP DSPACE.
+-- http://flywaydb.org/
+-- ===============================================================
+CREATE SEQUENCE process_id_seq;
+
+CREATE TABLE process
+(
+    process_id              INTEGER NOT NULL PRIMARY KEY,
+    user_id                 UUID NOT NULL,
+    start_time              TIMESTAMP,
+    finished_time           TIMESTAMP,
+    creation_time           TIMESTAMP NOT NULL,
+    script                  VARCHAR(256) NOT NULL,
+    status                  VARCHAR(32),
+    parameters              VARCHAR(512)
+);
+
+CREATE TABLE process2bitstream
+(
+  process_id   INTEGER REFERENCES process(process_id),
+  bitstream_id UUID REFERENCES bitstream(uuid),
+  CONSTRAINT PK_process2bitstream PRIMARY KEY (process_id, bitstream_id)
+);
+
+CREATE INDEX process_user_id_idx ON process(user_id);
+CREATE INDEX process_status_idx ON process(status);
+CREATE INDEX process_name_idx on process(script);
+CREATE INDEX process_start_time_idx on process(start_time);

dspace-api/src/main/resources/org/dspace/storage/rdbms/sqlmigration/oracle/V7.0_2019_06_14__scripts-and-process.sql

@@ -0,0 +1,40 @@
+--
+-- The contents of this file are subject to the license and copyright
+-- detailed in the LICENSE and NOTICE files at the root of the source
+-- tree and available online at
+--
+-- http://www.dspace.org/license/
+--
+
+-- ===============================================================
+-- WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
+--
+-- DO NOT MANUALLY RUN THIS DATABASE MIGRATION. IT WILL BE EXECUTED
+-- AUTOMATICALLY (IF NEEDED) BY "FLYWAY" WHEN YOU STARTUP DSPACE.
+-- http://flywaydb.org/
+-- ===============================================================
+CREATE SEQUENCE process_id_seq;
+
+CREATE TABLE process
+(
+    process_id              INTEGER NOT NULL PRIMARY KEY,
+    user_id                 RAW(16) NOT NULL,
+    start_time              TIMESTAMP,
+    finished_time           TIMESTAMP,
+    creation_time           TIMESTAMP NOT NULL,
+    script                  VARCHAR(256) NOT NULL,
+    status                  VARCHAR(32),
+    parameters              VARCHAR(512)
+);
+
+CREATE TABLE process2bitstream
+(
+  process_id   INTEGER REFERENCES process(process_id),
+  bitstream_id RAW(16) REFERENCES bitstream(uuid),
+  CONSTRAINT PK_process2bitstream PRIMARY KEY (process_id, bitstream_id)
+);
+
+CREATE INDEX process_user_id_idx ON process(user_id);
+CREATE INDEX process_status_idx ON process(status);
+CREATE INDEX process_name_idx on process(script);
+CREATE INDEX process_start_time_idx on process(start_time);

dspace-api/src/main/resources/org/dspace/storage/rdbms/sqlmigration/postgres/V7.0_2019_06_14__scripts-and-process.sql

@@ -0,0 +1,40 @@
+--
+-- The contents of this file are subject to the license and copyright
+-- detailed in the LICENSE and NOTICE files at the root of the source
+-- tree and available online at
+--
+-- http://www.dspace.org/license/
+--
+
+-- ===============================================================
+-- WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
+--
+-- DO NOT MANUALLY RUN THIS DATABASE MIGRATION. IT WILL BE EXECUTED
+-- AUTOMATICALLY (IF NEEDED) BY "FLYWAY" WHEN YOU STARTUP DSPACE.
+-- http://flywaydb.org/
+-- ===============================================================
+CREATE SEQUENCE process_id_seq;
+
+CREATE TABLE process
+(
+    process_id              INTEGER NOT NULL PRIMARY KEY,
+    user_id                 UUID NOT NULL,
+    start_time              TIMESTAMP,
+    finished_time           TIMESTAMP,
+    creation_time           TIMESTAMP NOT NULL,
+    script                  VARCHAR(256) NOT NULL,
+    status                  VARCHAR(32),
+    parameters              VARCHAR(512)
+);
+
+CREATE TABLE process2bitstream
+(
+  process_id   INTEGER REFERENCES process(process_id),
+  bitstream_id UUID REFERENCES bitstream(uuid),
+  CONSTRAINT PK_process2bitstream PRIMARY KEY (process_id, bitstream_id)
+);
+
+CREATE INDEX process_user_id_idx ON process(user_id);
+CREATE INDEX process_status_idx ON process(status);
+CREATE INDEX process_name_idx on process(script);
+CREATE INDEX process_start_time_idx on process(start_time);

dspace-api/src/test/data/dspaceFolder/config/spring/api/scripts.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<beans xmlns="http://www.springframework.org/schema/beans"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://www.springframework.org/schema/beans
+           http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">
+
+    <bean id="indexClient" class="org.dspace.discovery.IndexClient" scope="prototype">
+        <property name="name" value="index-discovery"/>
+        <property name="description" value="Update Discovery Solr Search Index"/>
+    </bean>
+
+    <bean id="MockScript" class="org.dspace.scripts.impl.MockDSpaceRunnableScript" scope="prototype">
+        <property name="name" value="mock-script" />
+        <property name="description" value="Mocking a script for testing purposes" />
+    </bean>
+</beans>

dspace-api/src/test/data/dspaceFolder/config/submission-forms.xml

@@ -14,11 +14,12 @@
  <!-- Each form set contains an ordered set of pages; each page defines    -->
  <!-- one submission metadata entry screen. Each page has an ordered list  -->
  <!-- of field definitions, Each field definition corresponds to one       -->
- <!-- metadata entry (a so-called row), which has a DC element name, a    -->
+ <!-- metadata entry (a so-called row), which has a DC element name, a     -->
  <!-- displayed label, a text string prompt which is called a hint, and    -->
  <!-- an input-type. Each field also may hold optional elements: DC        -->
- <!-- qualifier name, a repeatable flag, and a text string whose presence  -->
- <!-- serves as a 'this field is required' flag.                           -->
+ <!-- qualifier name, a repeatable flag, an optional name-variants allowed -->
+ <!-- flag, and a text string whose presence serves as a                   -->
+ <!-- 'this field is required' flag.                                       -->
 
  <form-definitions>
     <form name="bitstream-metadata">
@@ -53,6 +54,7 @@
                     <relationship-type>isAuthorOfPublication</relationship-type>
                     <search-configuration>personConfiguration</search-configuration>
                     <repeatable>true</repeatable>
+                    <name-variants>true</name-variants>
                     <label>Author</label>
                     <hint>Add an author</hint>
                     <linked-metadata-field>

dspace-api/src/test/java/org/dspace/content/RelationshipMetadataServiceTest.java

@@ -354,4 +354,78 @@ public class RelationshipMetadataServiceTest extends AbstractUnitTest {
         assertThat(issueList.size(), equalTo(1));
         assertThat(issueList.get(0).getValue(), equalTo("2"));
     }
+
+    @Test
+    public void testGetNextRightPlace() throws Exception {
+        assertThat(relationshipService.findNextRightPlaceByRightItem(context, authorItem), equalTo(0));
+        context.turnOffAuthorisationSystem();
+
+        itemService.addMetadata(context, item, "relationship", "type", null, null, "Publication");
+        itemService.addMetadata(context, authorItem, "relationship", "type", null, null, "Author");
+        itemService.addMetadata(context, authorItem, "person", "familyName", null, null, "familyName");
+        itemService.addMetadata(context, authorItem, "person", "givenName", null, null, "firstName");
+        EntityType publicationEntityType = entityTypeService.create(context, "Publication");
+        EntityType authorEntityType = entityTypeService.create(context, "Author");
+        RelationshipType isAuthorOfPublication = relationshipTypeService
+            .create(context, publicationEntityType, authorEntityType, "isAuthorOfPublication", "isPublicationOfAuthor",
+                    null, null, null, null);
+        Relationship relationship = relationshipService.create(context, item, authorItem, isAuthorOfPublication, 0, 0);
+        context.restoreAuthSystemState();
+
+        assertThat(relationshipService.findNextRightPlaceByRightItem(context, authorItem), equalTo(1));
+
+        context.turnOffAuthorisationSystem();
+        Community community = communityService.create(null, context);
+
+        Collection col = collectionService.create(context, community);
+        WorkspaceItem is = workspaceItemService.create(context, col, false);
+        Item secondItem = installItemService.installItem(context, is);
+        itemService.addMetadata(context, secondItem, "relationship", "type", null, null, "Publication");
+        Relationship secondRelationship = relationshipService.create(context, secondItem, authorItem,
+                                                                     isAuthorOfPublication, 0, 0);
+        context.restoreAuthSystemState();
+
+        assertThat(relationshipService.findNextRightPlaceByRightItem(context, authorItem), equalTo(2));
+
+
+
+    }
+
+    @Test
+    public void testGetNextLeftPlace() throws Exception {
+        assertThat(relationshipService.findNextLeftPlaceByLeftItem(context, item), equalTo(0));
+        context.turnOffAuthorisationSystem();
+
+        itemService.addMetadata(context, item, "relationship", "type", null, null, "Publication");
+        itemService.addMetadata(context, authorItem, "relationship", "type", null, null, "Author");
+        itemService.addMetadata(context, authorItem, "person", "familyName", null, null, "familyName");
+        itemService.addMetadata(context, authorItem, "person", "givenName", null, null, "firstName");
+        EntityType publicationEntityType = entityTypeService.create(context, "Publication");
+        EntityType authorEntityType = entityTypeService.create(context, "Author");
+        RelationshipType isAuthorOfPublication = relationshipTypeService
+            .create(context, publicationEntityType, authorEntityType, "isAuthorOfPublication", "isPublicationOfAuthor",
+                    null, null, null, null);
+        Relationship relationship = relationshipService.create(context, item, authorItem, isAuthorOfPublication, 0, 0);
+        context.restoreAuthSystemState();
+
+        assertThat(relationshipService.findNextLeftPlaceByLeftItem(context, item), equalTo(1));
+
+        context.turnOffAuthorisationSystem();
+        Community community = communityService.create(null, context);
+
+        Collection col = collectionService.create(context, community);
+        WorkspaceItem is = workspaceItemService.create(context, col, false);
+        Item secondAuthor = installItemService.installItem(context, is);
+        itemService.addMetadata(context, secondAuthor, "relationship", "type", null, null, "Author");
+        itemService.addMetadata(context, secondAuthor, "person", "familyName", null, null, "familyName");
+        itemService.addMetadata(context, secondAuthor, "person", "givenName", null, null, "firstName");
+        Relationship secondRelationship = relationshipService.create(context, item, secondAuthor,
+                                                                     isAuthorOfPublication, 0, 0);
+        context.restoreAuthSystemState();
+
+        assertThat(relationshipService.findNextLeftPlaceByLeftItem(context, item), equalTo(2));
+
+
+
+    }
 }

dspace-api/src/test/java/org/dspace/content/RelationshipServiceImplPlaceTest.java

@@ -0,0 +1,428 @@
+/**
+ * The contents of this file are subject to the license and copyright
+ * detailed in the LICENSE and NOTICE files at the root of the source
+ * tree and available online at
+ *
+ * http://www.dspace.org/license/
+ */
+package org.dspace.content;
+
+import static org.hamcrest.CoreMatchers.equalTo;
+import static org.junit.Assert.assertThat;
+import static org.junit.Assert.fail;
+
+import java.sql.SQLException;
+import java.util.List;
+
+import org.apache.logging.log4j.Logger;
+import org.dspace.AbstractUnitTest;
+import org.dspace.authorize.AuthorizeException;
+import org.dspace.content.factory.ContentServiceFactory;
+import org.dspace.content.service.CollectionService;
+import org.dspace.content.service.CommunityService;
+import org.dspace.content.service.EntityTypeService;
+import org.dspace.content.service.InstallItemService;
+import org.dspace.content.service.ItemService;
+import org.dspace.content.service.MetadataValueService;
+import org.dspace.content.service.RelationshipService;
+import org.dspace.content.service.RelationshipTypeService;
+import org.dspace.content.service.WorkspaceItemService;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+public class RelationshipServiceImplPlaceTest extends AbstractUnitTest {
+
+    private static final Logger log = org.apache.logging.log4j.LogManager
+        .getLogger(RelationshipServiceImplPlaceTest.class);
+
+    protected RelationshipService relationshipService = ContentServiceFactory.getInstance().getRelationshipService();
+    protected RelationshipTypeService relationshipTypeService = ContentServiceFactory.getInstance()
+                                                                                     .getRelationshipTypeService();
+    protected EntityTypeService entityTypeService = ContentServiceFactory.getInstance().getEntityTypeService();
+    protected CommunityService communityService = ContentServiceFactory.getInstance().getCommunityService();
+    protected CollectionService collectionService = ContentServiceFactory.getInstance().getCollectionService();
+    protected ItemService itemService = ContentServiceFactory.getInstance().getItemService();
+    protected InstallItemService installItemService = ContentServiceFactory.getInstance().getInstallItemService();
+    protected WorkspaceItemService workspaceItemService = ContentServiceFactory.getInstance().getWorkspaceItemService();
+    protected MetadataValueService metadataValueService = ContentServiceFactory.getInstance().getMetadataValueService();
+
+    Community community;
+    Collection col;
+
+    Item item;
+    Item authorItem;
+    RelationshipType isAuthorOfPublication;
+    EntityType publicationEntityType;
+    EntityType authorEntityType;
+
+    String authorQualifier = "author";
+    String contributorElement = "contributor";
+    String dcSchema = "dc";
+
+    /**
+     * This method will be run before every test as per @Before. It will
+     * initialize resources required for the tests.
+     */
+    @Before
+    @Override
+    public void init() {
+        super.init();
+        try {
+            context.turnOffAuthorisationSystem();
+            community = communityService.create(null, context);
+
+            col = collectionService.create(context, community);
+            WorkspaceItem is = workspaceItemService.create(context, col, false);
+            WorkspaceItem authorIs = workspaceItemService.create(context, col, false);
+
+            item = installItemService.installItem(context, is);
+            itemService.addMetadata(context, item, "relationship", "type", null, null, "Publication");
+
+            authorItem = installItemService.installItem(context, authorIs);
+            itemService.addMetadata(context, authorItem, "relationship", "type", null, null, "Person");
+            itemService.addMetadata(context, authorItem, "person", "familyName", null, null, "familyName");
+            itemService.addMetadata(context, authorItem, "person", "givenName", null, null, "firstName");
+
+            publicationEntityType = entityTypeService.create(context, "Publication");
+            authorEntityType = entityTypeService.create(context, "Person");
+            isAuthorOfPublication = relationshipTypeService
+                .create(context, publicationEntityType, authorEntityType,
+                        "isAuthorOfPublication", "isPublicationOfAuthor",
+                        null, null, null, null);
+
+            context.restoreAuthSystemState();
+        } catch (AuthorizeException ex) {
+            log.error("Authorization Error in init", ex);
+            fail("Authorization Error in init: " + ex.getMessage());
+        } catch (SQLException ex) {
+            log.error("SQL Error in init", ex);
+            fail("SQL Error in init: " + ex.getMessage());
+        }
+    }
+
+    /**
+     * This method will be run after every test as per @After. It will
+     * clean resources initialized by the @Before methods.
+     */
+    @After
+    @Override
+    public void destroy() {
+        context.abort();
+        super.destroy();
+    }
+
+    /**
+     * This test will test the use case of having an item to which we add some metadata. After that, we'll add a single
+     * relationship to this Item. We'll test whether the places are correct, in this case it'll be the two metadata
+     * values that we created first, has to have place 0 and 1. The Relationship that we just created needs to have
+     * leftPlace 2 and the metadata value resulting from that Relationship needs to also have place 2.
+     * Once these assertions succeed, we basically repeat said process with new metadata values and a new relationship.
+     * We then test if the old assertions still hold true like they should and that the new ones behave as expected
+     * as well.
+     * @throws Exception    If something goes wrong
+     */
+    @Test
+    public void addMetadataAndRelationshipTest() throws Exception {
+        context.turnOffAuthorisationSystem();
+
+        // Here we add the first set of metadata to the item
+        itemService.addMetadata(context, item, dcSchema, contributorElement, authorQualifier, null, "test, one");
+        itemService.addMetadata(context, item, dcSchema, contributorElement, authorQualifier, null, "test, two");
+
+        // Here we create the first Relationship to the item
+        Relationship relationship = relationshipService
+            .create(context, item, authorItem, isAuthorOfPublication, -1, -1);
+
+        context.restoreAuthSystemState();
+
+        // The code below performs the mentioned assertions to ensure the place is correct
+        List<MetadataValue> list = itemService
+            .getMetadata(item, dcSchema, contributorElement, authorQualifier, Item.ANY);
+        assertThat(list.size(), equalTo(3));
+
+        assertMetadataValue(authorQualifier, contributorElement, dcSchema, "test, one", null, 0, list.get(0));
+        assertMetadataValue(authorQualifier, contributorElement, dcSchema, "test, two", null, 1, list.get(1));
+        assertMetadataValue(authorQualifier, contributorElement, dcSchema, "familyName, firstName",
+                            "virtual::" + relationship.getID(), 2, list.get(2));
+        assertThat(relationship.getLeftPlace(), equalTo(2));
+
+        context.turnOffAuthorisationSystem();
+
+        // This is where we add the second set of metadata values
+        itemService.addMetadata(context, item, dcSchema, contributorElement, authorQualifier, null, "test, three");
+        itemService.addMetadata(context, item, dcSchema, contributorElement, authorQualifier, null, "test, four");
+
+        // Here we create an Item so that we can create another relationship with this item
+        WorkspaceItem authorIs = workspaceItemService.create(context, col, false);
+        Item secondAuthorItem = installItemService.installItem(context, authorIs);
+        itemService.addMetadata(context, secondAuthorItem, "relationship", "type", null, null, "Person");
+        itemService.addMetadata(context, secondAuthorItem, "person", "familyName", null, null, "familyNameTwo");
+        itemService.addMetadata(context, secondAuthorItem, "person", "givenName", null, null, "firstNameTwo");
+        Relationship relationshipTwo = relationshipService
+            .create(context, item, secondAuthorItem, isAuthorOfPublication, -1, -1);
+
+        context.restoreAuthSystemState();
+
+        // Here we retrieve the list of metadata again to perform the assertions on the places below as mentioned
+        list = itemService.getMetadata(item, dcSchema, contributorElement, authorQualifier, Item.ANY);
+
+        assertMetadataValue(authorQualifier, contributorElement, dcSchema, "test, one", null, 0, list.get(0));
+        assertMetadataValue(authorQualifier, contributorElement, dcSchema, "test, two", null, 1, list.get(1));
+        assertMetadataValue(authorQualifier, contributorElement, dcSchema, "familyName, firstName",
+                            "virtual::" + relationship.getID(), 2, list.get(2));
+        assertThat(relationship.getLeftPlace(), equalTo(2));
+        assertMetadataValue(authorQualifier, contributorElement, dcSchema, "test, three", null, 3, list.get(3));
+        assertMetadataValue(authorQualifier, contributorElement, dcSchema, "test, four", null, 4, list.get(4));
+        assertMetadataValue(authorQualifier, contributorElement, dcSchema, "familyNameTwo, firstNameTwo",
+                            "virtual::" + relationshipTwo.getID(), 5, list.get(5));
+        assertThat(relationshipTwo.getLeftPlace(), equalTo(5));
+
+    }
+
+    /**
+     * This test is virtually the same as above, only this time we'll add Relationships with leftPlaces already set
+     * equal to what they HAVE to be. So in the first test addMetadataAndRelationshipTest, we didn't specify a place
+     * and left it up to the Service to determine it, here we provide a correct place already.
+     * We perform the exact same logic except that we give a proper place already to the Relationships and we
+     * perform the same checks
+     * @throws Exception    If something goes wrong
+     */
+    @Test
+    public void AddMetadataAndRelationshipWithSpecificPlaceTest() throws Exception {
+        context.turnOffAuthorisationSystem();
+
+        // Here we add the first set of metadata to the item
+        itemService.addMetadata(context, item, dcSchema, contributorElement, authorQualifier, null, "test, one");
+        itemService.addMetadata(context, item, dcSchema, contributorElement, authorQualifier, null, "test, two");
+
+        // Here we create the first Relationship to the item with the specific leftPlace: 2
+        Relationship relationship = relationshipService.create(context, item, authorItem, isAuthorOfPublication, 2, -1);
+
+        context.restoreAuthSystemState();
+
+        // The code below performs the mentioned assertions to ensure the place is correct
+        List<MetadataValue> list = itemService
+            .getMetadata(item, dcSchema, contributorElement, authorQualifier, Item.ANY);
+        assertThat(list.size(), equalTo(3));
+
+        assertMetadataValue(authorQualifier, contributorElement, dcSchema, "test, one", null, 0, list.get(0));
+        assertMetadataValue(authorQualifier, contributorElement, dcSchema, "test, two", null, 1, list.get(1));
+        assertMetadataValue(authorQualifier, contributorElement, dcSchema, "familyName, firstName",
+                            "virtual::" + relationship.getID(), 2, list.get(2));
+        assertThat(relationship.getLeftPlace(), equalTo(2));
+
+        context.turnOffAuthorisationSystem();
+
+        // This is where we add the second set of metadata values
+        itemService.addMetadata(context, item, dcSchema, contributorElement, authorQualifier, null, "test, three");
+        itemService.addMetadata(context, item, dcSchema, contributorElement, authorQualifier, null, "test, four");
+
+        // Here we create an Item so that we can create another relationship with this item. We'll give this
+        // Relationship a specific place as well
+        WorkspaceItem authorIs = workspaceItemService.create(context, col, false);
+        Item secondAuthorItem = installItemService.installItem(context, authorIs);
+        itemService.addMetadata(context, secondAuthorItem, "relationship", "type", null, null, "Person");
+        itemService.addMetadata(context, secondAuthorItem, "person", "familyName", null, null, "familyNameTwo");
+        itemService.addMetadata(context, secondAuthorItem, "person", "givenName", null, null, "firstNameTwo");
+        Relationship relationshipTwo = relationshipService
+            .create(context, item, secondAuthorItem, isAuthorOfPublication, 5, -1);
+
+        context.restoreAuthSystemState();
+
+        // Here we retrieve the list of metadata again to perform the assertions on the places below as mentioned
+        list = itemService.getMetadata(item, dcSchema, contributorElement, authorQualifier, Item.ANY);
+
+        assertMetadataValue(authorQualifier, contributorElement, dcSchema, "test, one", null, 0, list.get(0));
+        assertMetadataValue(authorQualifier, contributorElement, dcSchema, "test, two", null, 1, list.get(1));
+        assertMetadataValue(authorQualifier, contributorElement, dcSchema, "familyName, firstName",
+                            "virtual::" + relationship.getID(), 2, list.get(2));
+        assertThat(relationship.getLeftPlace(), equalTo(2));
+
+        assertMetadataValue(authorQualifier, contributorElement, dcSchema, "test, three", null, 3, list.get(3));
+        assertMetadataValue(authorQualifier, contributorElement, dcSchema, "test, four", null, 4, list.get(4));
+        assertMetadataValue(authorQualifier, contributorElement, dcSchema, "familyNameTwo, firstNameTwo",
+                            "virtual::" + relationshipTwo.getID(), 5, list.get(5));
+        assertThat(relationshipTwo.getLeftPlace(), equalTo(5));
+
+    }
+
+
+    /**
+     * In this test, our goal will be to add a bunch of metadata values to then remove one of them. We'll check the list
+     * of metadata values for the item and check that the places have not been altered for the metadata values IF an
+     * item.update hadn't been called yet. We'll then create a Relationship (by which an item.update will be called)
+     * and then we check that the places are set correctly.
+     * We then repeat this process once more and check that everything works as intended
+     * @throws Exception
+     */
+    @Test
+    public void AddAndRemoveMetadataAndRelationshipsTest() throws Exception {
+        context.turnOffAuthorisationSystem();
+
+        // Here we add the first set of metadata to the item
+        itemService.addMetadata(context, item, dcSchema, contributorElement, authorQualifier, null, "test, one");
+        itemService.addMetadata(context, item, dcSchema, contributorElement, authorQualifier, null, "test, two");
+        itemService.addMetadata(context, item, dcSchema, contributorElement, authorQualifier, null, "test, three");
+
+        // Get a specific metadatavlaue to remove
+        MetadataValue metadataValueToRemove = itemService.getMetadata(item, "dc", "contributor", "author", Item.ANY)
+                                                         .get(1);
+        // Remove the actual metadata value
+        item.removeMetadata(metadataValueToRemove);
+        metadataValueService.delete(context, metadataValueToRemove);
+
+        context.restoreAuthSystemState();
+
+        // Retrieve the list of mdv again
+        List<MetadataValue> list = itemService
+            .getMetadata(item, dcSchema, contributorElement, authorQualifier, Item.ANY);
+        // Verify we only have 2 mdv left
+        assertThat(list.size(), equalTo(2));
+
+        // Check that these places are still intact after the deletion as the place doesn't get updated until an
+        // item.update has been called
+        assertMetadataValue(authorQualifier, contributorElement, dcSchema, "test, one", null, 0, list.get(0));
+        assertMetadataValue(authorQualifier, contributorElement, dcSchema, "test, three", null, 2, list.get(1));
+
+        context.turnOffAuthorisationSystem();
+
+        // Create a relationship with this item with a spcific place
+        Relationship relationship = relationshipService.create(context, item, authorItem, isAuthorOfPublication, 1, -1);
+
+        context.restoreAuthSystemState();
+
+        // Retrieve the list again and verify that the creation of the Relationship added an additional mdv
+        list = itemService.getMetadata(item, dcSchema, contributorElement, authorQualifier, Item.ANY);
+        assertThat(list.size(), equalTo(3));
+
+        // Assert that the mdv are well placed
+        assertMetadataValue(authorQualifier, contributorElement, dcSchema, "test, one", null, 0, list.get(0));
+        assertMetadataValue(authorQualifier, contributorElement, dcSchema, "familyName, firstName",
+                            "virtual::" + relationship.getID(), 1, list.get(1));
+        assertThat(relationship.getLeftPlace(), equalTo(1));
+
+        assertMetadataValue(authorQualifier, contributorElement, dcSchema, "test, three", null, 2, list.get(2));
+
+        context.turnOffAuthorisationSystem();
+
+        // Add two extra mdv
+        itemService.addMetadata(context, item, dcSchema, contributorElement, authorQualifier, null, "test, four");
+        itemService.addMetadata(context, item, dcSchema, contributorElement, authorQualifier, null, "test, five");
+
+        //This is author "test, four" that we're removing
+        metadataValueToRemove = itemService.getMetadata(item, "dc", "contributor", "author", Item.ANY).get(3);
+        item.removeMetadata(metadataValueToRemove);
+        metadataValueService.delete(context, metadataValueToRemove);
+
+        context.restoreAuthSystemState();
+
+        list = itemService.getMetadata(item, dcSchema, contributorElement, authorQualifier, Item.ANY);
+
+        // Check that these places are still intact after the deletion as the place doesn't get updated until an
+        // item.update has been called
+        assertMetadataValue(authorQualifier, contributorElement, dcSchema, "test, one", null, 0, list.get(0));
+        assertMetadataValue(authorQualifier, contributorElement, dcSchema, "familyName, firstName",
+                            "virtual::" + relationship.getID(), 1, list.get(1));
+        assertThat(relationship.getLeftPlace(), equalTo(1));
+
+        assertMetadataValue(authorQualifier, contributorElement, dcSchema, "test, three", null, 2, list.get(2));
+        assertMetadataValue(authorQualifier, contributorElement, dcSchema, "test, five", null, 4, list.get(3));
+
+        context.turnOffAuthorisationSystem();
+
+        // Create an additional item for another relationship
+        WorkspaceItem authorIs = workspaceItemService.create(context, col, false);
+        Item secondAuthorItem = installItemService.installItem(context, authorIs);
+        itemService.addMetadata(context, secondAuthorItem, "relationship", "type", null, null, "Person");
+        itemService.addMetadata(context, secondAuthorItem, "person", "familyName", null, null, "familyNameTwo");
+        itemService.addMetadata(context, secondAuthorItem, "person", "givenName", null, null, "firstNameTwo");
+        Relationship relationshipTwo = relationshipService
+            .create(context, item, secondAuthorItem, isAuthorOfPublication, 3, -1);
+
+        context.restoreAuthSystemState();
+
+        // Check that the other mdv are still okay and that the creation of the relationship added
+        // another correct mdv to the item
+        list = itemService.getMetadata(item, dcSchema, contributorElement, authorQualifier, Item.ANY);
+
+        assertMetadataValue(authorQualifier, contributorElement, dcSchema, "test, one", null, 0, list.get(0));
+        assertMetadataValue(authorQualifier, contributorElement, dcSchema, "familyName, firstName",
+                            "virtual::" + relationship.getID(), 1, list.get(1));
+        assertThat(relationship.getLeftPlace(), equalTo(1));
+
+        assertMetadataValue(authorQualifier, contributorElement, dcSchema, "test, three", null, 2, list.get(2));
+        assertMetadataValue(authorQualifier, contributorElement, dcSchema, "familyNameTwo, firstNameTwo",
+                            "virtual::" + relationshipTwo.getID(), 3, list.get(3));
+        assertThat(relationshipTwo.getLeftPlace(), equalTo(3));
+
+        assertMetadataValue(authorQualifier, contributorElement, dcSchema, "test, five", null, 4, list.get(4));
+
+    }
+
+    @Test
+    public void AddAndUpdateMetadataAndRelationshipsTest() throws Exception {
+        context.turnOffAuthorisationSystem();
+
+        // Add metadata and relationships to the item
+        itemService.addMetadata(context, item, dcSchema, contributorElement, authorQualifier, null, "test, one");
+        itemService.addMetadata(context, item, dcSchema, contributorElement, authorQualifier, null, "test, two");
+        itemService.addMetadata(context, item, dcSchema, contributorElement, authorQualifier, null, "test, three");
+
+        Relationship relationship = relationshipService
+            .create(context, item, authorItem, isAuthorOfPublication, -1, -1);
+
+        context.restoreAuthSystemState();
+
+        // Get the list of mdv and assert that they're correct
+        List<MetadataValue> list = itemService
+            .getMetadata(item, dcSchema, contributorElement, authorQualifier, Item.ANY);
+        assertThat(list.size(), equalTo(4));
+
+        assertMetadataValue(authorQualifier, contributorElement, dcSchema, "test, one", null, 0, list.get(0));
+        assertMetadataValue(authorQualifier, contributorElement, dcSchema, "test, two", null, 1, list.get(1));
+        assertMetadataValue(authorQualifier, contributorElement, dcSchema, "test, three", null, 2, list.get(2));
+        assertMetadataValue(authorQualifier, contributorElement, dcSchema, "familyName, firstName",
+                            "virtual::" + relationship.getID(), 3, list.get(3));
+        assertThat(relationship.getLeftPlace(), equalTo(3));
+
+
+        context.turnOffAuthorisationSystem();
+
+        MetadataValue metadataValueToUpdate = itemService.getMetadata(item, "dc", "contributor", "author", Item.ANY)
+                                                         .get(1);
+
+        // Switching the places of this relationship and metadata value to verify in the test later on that this
+        // updating works
+        metadataValueToUpdate.setPlace(3);
+        metadataValueService.update(context, metadataValueToUpdate);
+        relationship.setLeftPlace(1);
+        relationshipService.update(context, relationship);
+
+        context.restoreAuthSystemState();
+
+        // Retrieve the list again and verify that the updating did indeed work
+        list = itemService.getMetadata(item, dcSchema, contributorElement, authorQualifier, Item.ANY);
+
+        assertMetadataValue(authorQualifier, contributorElement, dcSchema, "test, one", null, 0, list.get(0));
+        assertMetadataValue(authorQualifier, contributorElement, dcSchema, "test, two", null, 3, list.get(3));
+        assertMetadataValue(authorQualifier, contributorElement, dcSchema, "test, three", null, 2, list.get(2));
+        assertMetadataValue(authorQualifier, contributorElement, dcSchema, "familyName, firstName",
+                            "virtual::" + relationship.getID(), 1, list.get(1));
+        assertThat(relationship.getLeftPlace(), equalTo(1));
+
+
+    }
+
+    private void assertMetadataValue(String authorQualifier, String contributorElement, String dcSchema, String value,
+                                     String authority, int place, MetadataValue metadataValue) {
+        assertThat(metadataValue.getValue(), equalTo(value));
+        assertThat(metadataValue.getMetadataField().getMetadataSchema().getName(), equalTo(dcSchema));
+        assertThat(metadataValue.getMetadataField().getElement(), equalTo(contributorElement));
+        assertThat(metadataValue.getMetadataField().getQualifier(), equalTo(authorQualifier));
+        assertThat(metadataValue.getAuthority(), equalTo(authority));
+        assertThat(metadataValue.getPlace(), equalTo(place));
+    }
+
+
+}

dspace-api/src/test/java/org/dspace/content/RelationshipServiceImplTest.java

@@ -114,11 +114,11 @@ public class RelationshipServiceImplTest {
         Item item = mock(Item.class);
 
         // Mock DAO to return mocked left place as 0
-        when(relationshipDAO.findLeftPlaceByLeftItem(context, item)).thenReturn(0);
+        when(relationshipDAO.findNextLeftPlaceByLeftItem(context, item)).thenReturn(0);
 
         // The left place reported from out mocked item should match the DAO's report of the left place
-        assertEquals("TestFindLeftPlaceByLeftItem 0", relationshipDAO.findLeftPlaceByLeftItem(context, item),
-                relationshipService.findLeftPlaceByLeftItem(context, item));
+        assertEquals("TestFindLeftPlaceByLeftItem 0", relationshipDAO.findNextLeftPlaceByLeftItem(context, item),
+                relationshipService.findNextLeftPlaceByLeftItem(context, item));
     }
 
     @Test
@@ -127,11 +127,11 @@ public class RelationshipServiceImplTest {
         Item item = mock(Item.class);
 
         // Mock lower level DAO to return mocked right place as 0
-        when(relationshipDAO.findRightPlaceByRightItem(context, item)).thenReturn(0);
+        when(relationshipDAO.findNextRightPlaceByRightItem(context, item)).thenReturn(0);
 
         // The right place reported from out mocked item should match the DAO's report of the right place
-        assertEquals("TestFindRightPlaceByRightItem 0", relationshipDAO.findRightPlaceByRightItem(context, item),
-                relationshipService.findRightPlaceByRightItem(context, item));
+        assertEquals("TestFindRightPlaceByRightItem 0", relationshipDAO.findNextRightPlaceByRightItem(context, item),
+                relationshipService.findNextRightPlaceByRightItem(context, item));
     }
 
     @Test

dspace-api/src/test/java/org/dspace/content/dao/RelationshipDAOImplTest.java

@@ -138,24 +138,24 @@ public class RelationshipDAOImplTest extends AbstractIntegrationTest {
     }
 
     /**
-     * Test findLeftPlaceByLeftItem should return 0 given our test left Item itemOne.
+     * Test findNextLeftPlaceByLeftItem should return 0 given our test left Item itemOne.
      *
      * @throws Exception
      */
     @Test
-    public void testFindLeftPlaceByLeftItem() throws Exception {
-        assertEquals("TestLeftPlaceByLeftItem 0", 0, relationshipService.findLeftPlaceByLeftItem(context,
+    public void testFindNextLeftPlaceByLeftItem() throws Exception {
+        assertEquals("TestNextLeftPlaceByLeftItem 0", 1, relationshipService.findNextLeftPlaceByLeftItem(context,
                 itemOne));
     }
 
     /**
-     * Test findRightPlaceByRightItem should return 0 given our test right Item itemTwo.
+     * Test findNextRightPlaceByRightItem should return 0 given our test right Item itemTwo.
      *
      * @throws Exception
      */
     @Test
-    public void testFindRightPlaceByRightItem() throws Exception {
-        assertEquals("TestRightPlaceByRightItem 0", 0, relationshipService.findRightPlaceByRightItem(context,
+    public void testFindNextRightPlaceByRightItem() throws Exception {
+        assertEquals("TestNextRightPlaceByRightItem 0", 1, relationshipService.findNextRightPlaceByRightItem(context,
                 itemTwo));
     }
 
@@ -183,4 +183,4 @@ public class RelationshipDAOImplTest extends AbstractIntegrationTest {
     }
 
 
-}
+}

dspace-api/src/test/java/org/dspace/scripts/DSpaceCommandLineParameterTest.java

@@ -0,0 +1,136 @@
+/**
+ * The contents of this file are subject to the license and copyright
+ * detailed in the LICENSE and NOTICE files at the root of the source
+ * tree and available online at
+ *
+ * http://www.dspace.org/license/
+ */
+package org.dspace.scripts;
+
+import static org.hamcrest.CoreMatchers.equalTo;
+import static org.junit.Assert.assertThat;
+import static org.junit.Assert.assertTrue;
+
+import java.util.LinkedList;
+import java.util.List;
+
+import org.dspace.AbstractUnitTest;
+import org.junit.Test;
+
+public class DSpaceCommandLineParameterTest extends AbstractUnitTest {
+
+    @Test
+    public void constructorTest() {
+        String key = "-c";
+        String value = "test";
+
+        DSpaceCommandLineParameter dSpaceCommandLineParameter = new DSpaceCommandLineParameter(key, value);
+
+        assertThat("constructorTest 0", dSpaceCommandLineParameter.getName(), equalTo(key));
+        assertThat("constructorTest 1", dSpaceCommandLineParameter.getValue(), equalTo(value));
+    }
+
+    @Test
+    public void constructorTestNullValue() {
+        String key = "-c";
+        String value = null;
+
+        DSpaceCommandLineParameter dSpaceCommandLineParameter = new DSpaceCommandLineParameter(key, value);
+
+        assertThat("constructorTest 0", dSpaceCommandLineParameter.getName(), equalTo(key));
+        assertThat("constructorTest 1", dSpaceCommandLineParameter.getValue(), equalTo(value));
+    }
+
+    @Test
+    public void singleParameterConstructorTest() {
+        String parameter = "-c test";
+
+        DSpaceCommandLineParameter dSpaceCommandLineParameter = new DSpaceCommandLineParameter(parameter);
+
+        assertThat("singleParameterConstructorTest 0", dSpaceCommandLineParameter.getName(), equalTo("-c"));
+        assertThat("singleParameterConstructorTest 1", dSpaceCommandLineParameter.getValue(), equalTo("test"));
+    }
+
+    @Test
+    public void singleParameterConstructorTestNoValue() {
+        String parameter = "-c";
+
+        DSpaceCommandLineParameter dSpaceCommandLineParameter = new DSpaceCommandLineParameter(parameter);
+
+        assertThat("singleParameterConstructorTest 0", dSpaceCommandLineParameter.getName(), equalTo("-c"));
+        assertThat("singleParameterConstructorTest 1", dSpaceCommandLineParameter.getValue(), equalTo(null));
+    }
+
+    @Test
+    public void toStringTest() {
+        String key = "-c";
+        String value = "test";
+
+        DSpaceCommandLineParameter dSpaceCommandLineParameter = new DSpaceCommandLineParameter(key, value);
+
+        assertThat("toStringTest 0", dSpaceCommandLineParameter.getName(), equalTo(key));
+        assertThat("toStringTest 1", dSpaceCommandLineParameter.getValue(), equalTo(value));
+
+        assertThat("toStringTest 2", dSpaceCommandLineParameter.toString(), equalTo("-c test"));
+    }
+
+    @Test
+    public void toStringTestNullValue() {
+        String key = "-c";
+        String value = null;
+
+        DSpaceCommandLineParameter dSpaceCommandLineParameter = new DSpaceCommandLineParameter(key, value);
+
+        assertThat("toStringTest 0", dSpaceCommandLineParameter.getName(), equalTo(key));
+        assertThat("toStringTest 1", dSpaceCommandLineParameter.getValue(), equalTo(value));
+
+        assertThat("toStringTest 2", dSpaceCommandLineParameter.toString(), equalTo("-c"));
+    }
+
+    @Test
+    public void equalsTest() {
+        String key = "-c";
+        String value = "test";
+
+        DSpaceCommandLineParameter dSpaceCommandLineParameter = new DSpaceCommandLineParameter(key, value);
+        DSpaceCommandLineParameter dSpaceCommandLineParameter1 = new DSpaceCommandLineParameter(key, value);
+
+        assertThat("toStringTest 0", dSpaceCommandLineParameter.getName(), equalTo(key));
+        assertThat("toStringTest 1", dSpaceCommandLineParameter.getValue(), equalTo(value));
+
+
+        assertThat("toStringTest 0", dSpaceCommandLineParameter1.getName(), equalTo(key));
+        assertThat("toStringTest 1", dSpaceCommandLineParameter1.getValue(), equalTo(value));
+
+        assertTrue(dSpaceCommandLineParameter.equals(dSpaceCommandLineParameter1));
+    }
+
+    @Test
+    public void concatenateTest() {
+        String key = "-c";
+        String value = "test";
+
+        DSpaceCommandLineParameter dSpaceCommandLineParameter = new DSpaceCommandLineParameter(key, value);
+        DSpaceCommandLineParameter dSpaceCommandLineParameter1 = new DSpaceCommandLineParameter(key, value);
+
+        String key2 = "-r";
+        String value2 = "testing";
+        DSpaceCommandLineParameter dSpaceCommandLineParameter2 = new DSpaceCommandLineParameter(key2, value2);
+
+        String key3 = "-t";
+        String value3 = null;
+        DSpaceCommandLineParameter dSpaceCommandLineParameter3 = new DSpaceCommandLineParameter(key3, value3);
+
+        List<DSpaceCommandLineParameter> dSpaceCommandLineParameterList = new LinkedList<>();
+        dSpaceCommandLineParameterList.add(dSpaceCommandLineParameter);
+        dSpaceCommandLineParameterList.add(dSpaceCommandLineParameter1);
+        dSpaceCommandLineParameterList.add(dSpaceCommandLineParameter2);
+        dSpaceCommandLineParameterList.add(dSpaceCommandLineParameter3);
+        String concatenedString = DSpaceCommandLineParameter.concatenate(dSpaceCommandLineParameterList);
+
+        assertThat("concatenateTest", concatenedString, equalTo(
+            dSpaceCommandLineParameter.toString() + DSpaceCommandLineParameter.SEPARATOR + dSpaceCommandLineParameter1
+                .toString() + DSpaceCommandLineParameter.SEPARATOR + dSpaceCommandLineParameter2
+                .toString() + DSpaceCommandLineParameter.SEPARATOR + dSpaceCommandLineParameter3.toString()));
+    }
+}

dspace-api/src/test/java/org/dspace/scripts/impl/MockDSpaceRunnableScript.java

@@ -0,0 +1,42 @@
+/**
+ * The contents of this file are subject to the license and copyright
+ * detailed in the LICENSE and NOTICE files at the root of the source
+ * tree and available online at
+ *
+ * http://www.dspace.org/license/
+ */
+package org.dspace.scripts.impl;
+
+import org.apache.commons.cli.Options;
+import org.apache.commons.cli.ParseException;
+import org.dspace.scripts.DSpaceRunnable;
+
+public class MockDSpaceRunnableScript extends DSpaceRunnable {
+
+    private MockDSpaceRunnableScript() {
+        Options options = constructOptions();
+        this.options = options;
+    }
+
+    @Override
+    public void internalRun() throws Exception {
+    }
+
+    @Override
+    public void setup() throws ParseException {
+        if (!commandLine.hasOption("i")) {
+            throw new ParseException("-i is a mandatory parameter");
+        }
+    }
+
+    private Options constructOptions() {
+        Options options = new Options();
+
+        options.addOption("r", "remove", true, "description r");
+        options.getOption("r").setType(String.class);
+        options.addOption("i", "index", true, "description i");
+        options.getOption("i").setType(boolean.class);
+        options.getOption("i").setRequired(true);
+        return options;
+    }
+}

dspace-server-webapp/src/main/java/org/dspace/app/rest/AuthenticationRestController.java

@@ -11,6 +11,7 @@ import java.sql.SQLException;
 import java.util.Arrays;
 import javax.servlet.http.HttpServletRequest;
 
+import org.dspace.app.rest.converter.ConverterService;
 import org.dspace.app.rest.converter.EPersonConverter;
 import org.dspace.app.rest.link.HalLinkService;
 import org.dspace.app.rest.model.AuthenticationStatusRest;
@@ -18,6 +19,7 @@ import org.dspace.app.rest.model.AuthnRest;
 import org.dspace.app.rest.model.EPersonRest;
 import org.dspace.app.rest.model.hateoas.AuthenticationStatusResource;
 import org.dspace.app.rest.model.hateoas.AuthnResource;
+import org.dspace.app.rest.projection.Projection;
 import org.dspace.app.rest.utils.ContextUtil;
 import org.dspace.app.rest.utils.Utils;
 import org.dspace.core.Context;
@@ -49,6 +51,9 @@ public class AuthenticationRestController implements InitializingBean {
     @Autowired
     DiscoverableEndpointsService discoverableEndpointsService;
 
+    @Autowired
+    private ConverterService converter;
+
     @Autowired
     private EPersonConverter ePersonConverter;
 
@@ -65,24 +70,24 @@ public class AuthenticationRestController implements InitializingBean {
     }
 
     @RequestMapping(method = RequestMethod.GET)
-    public AuthnResource authn() throws SQLException {
-        AuthnResource authnResource = new AuthnResource(new AuthnRest(), utils);
-        halLinkService.addLinks(authnResource);
-        return authnResource;
+    public AuthnResource authn() {
+        AuthnRest authnRest = new AuthnRest();
+        authnRest.setProjection(utils.obtainProjection());
+        return converter.toResource(authnRest);
     }
 
     @RequestMapping(value = "/status", method = RequestMethod.GET)
     public AuthenticationStatusResource status(HttpServletRequest request) throws SQLException {
         Context context = ContextUtil.obtainContext(request);
         EPersonRest ePersonRest = null;
+        Projection projection = utils.obtainProjection();
         if (context.getCurrentUser() != null) {
-            ePersonRest = ePersonConverter.fromModelWithGroups(context, context.getCurrentUser());
+            ePersonRest = ePersonConverter.fromModelWithGroups(context, context.getCurrentUser(), projection);
         }
 
-        AuthenticationStatusResource authenticationStatusResource = new AuthenticationStatusResource(
-            new AuthenticationStatusRest(ePersonRest), utils);
-
-        halLinkService.addLinks(authenticationStatusResource);
+        AuthenticationStatusRest authenticationStatusRest = new AuthenticationStatusRest(ePersonRest);
+        authenticationStatusRest.setProjection(projection);
+        AuthenticationStatusResource authenticationStatusResource = converter.toResource(authenticationStatusRest);
 
         return authenticationStatusResource;
     }

dspace-server-webapp/src/main/java/org/dspace/app/rest/BitstreamBundleController.java

@@ -0,0 +1,153 @@
+/**
+ * The contents of this file are subject to the license and copyright
+ * detailed in the LICENSE and NOTICE files at the root of the source
+ * tree and available online at
+ *
+ * http://www.dspace.org/license/
+ */
+package org.dspace.app.rest;
+
+import static org.dspace.app.rest.utils.RegexUtils.REGEX_REQUESTMAPPING_IDENTIFIER_AS_UUID;
+import static org.dspace.core.Constants.BUNDLE;
+
+import java.io.IOException;
+import java.sql.SQLException;
+import java.util.List;
+import java.util.UUID;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.dspace.app.rest.converter.ConverterService;
+import org.dspace.app.rest.exception.UnprocessableEntityException;
+import org.dspace.app.rest.link.HalLinkService;
+import org.dspace.app.rest.model.BitstreamRest;
+import org.dspace.app.rest.model.BundleRest;
+import org.dspace.app.rest.model.hateoas.BundleResource;
+import org.dspace.app.rest.repository.BitstreamRestRepository;
+import org.dspace.app.rest.utils.ContextUtil;
+import org.dspace.app.rest.utils.Utils;
+import org.dspace.authorize.AuthorizeException;
+import org.dspace.content.Bitstream;
+import org.dspace.content.Bundle;
+import org.dspace.content.DSpaceObject;
+import org.dspace.content.service.BitstreamService;
+import org.dspace.core.Context;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.rest.webmvc.ControllerUtils;
+import org.springframework.data.rest.webmvc.ResourceNotFoundException;
+import org.springframework.hateoas.ResourceSupport;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.security.access.prepost.PostAuthorize;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.RestController;
+
+
+/**
+ * Controller to access bitstreams and the bundles they're in
+ * Endpoint: /api/core/bitstreams/{uuid}
+ * This controller can:
+ *     - request bundle a bitstream is in (GET /api/core/bitstreams/{uuid}/bundle)
+ *     - move bitstreams between bundles (POST /api/core/bitstreams/{uuid}/bundle (text/uri-list) -d link-to-new-bundle)
+ *
+ */
+@RestController
+@RequestMapping("/api/" + BitstreamRest.CATEGORY + "/" + BitstreamRest.PLURAL_NAME
+        + REGEX_REQUESTMAPPING_IDENTIFIER_AS_UUID + "/" + BundleRest.NAME)
+public class BitstreamBundleController {
+
+    @Autowired
+    private BitstreamService bitstreamService;
+
+    @Autowired
+    ConverterService converter;
+
+    @Autowired
+    HalLinkService halLinkService;
+
+    @Autowired
+    Utils utils;
+
+    @Autowired
+    BitstreamRestRepository bitstreamRestRepository;
+
+    /**
+     * This method gets the bundle of the bitstream that corresponds to to the provided bitstream uuid. When multiple
+     * bundles are present, only the first will be returned.
+     *
+     * @param uuid     The UUID of the bitstream for which the bundle will be retrieved
+     * @param response The response object
+     * @param request  The request object
+     * @return The wrapped resource containing the first bundle of the bitstream
+     * @throws IOException
+     * @throws SQLException
+     * @throws AuthorizeException
+     */
+    @PreAuthorize("hasPermission(#uuid, 'BITSTREAM', 'READ')")
+    @RequestMapping(method = {RequestMethod.GET, RequestMethod.HEAD})
+    public ResponseEntity<ResourceSupport> getBundle(@PathVariable UUID uuid, HttpServletResponse response,
+                                                     HttpServletRequest request)
+            throws IOException, SQLException, AuthorizeException {
+
+        Context context = ContextUtil.obtainContext(request);
+
+        Bitstream bitstream = bitstreamService.find(context, uuid);
+        if (bitstream == null) {
+            throw new ResourceNotFoundException(
+                    BitstreamRest.CATEGORY + "." + BitstreamRest.NAME + " with id: " + uuid + " not found");
+        }
+
+        List<Bundle> bundles = bitstream.getBundles();
+
+        if (bundles.isEmpty()) {
+            return ControllerUtils.toEmptyResponse(HttpStatus.NO_CONTENT);
+        }
+
+        BundleResource bundleResource = converter.toResource(
+                converter.toRest(bundles.get(0), utils.obtainProjection()));
+
+        return ControllerUtils.toResponseEntity(HttpStatus.OK, null, bundleResource);
+    }
+
+    /**
+     * This method moves the bitstream to the bundle corresponding the the link provided in the body of the put request
+     *
+     * @param uuid     The UUID of the bitstream for which the bundle will be retrieved
+     * @param response The response object
+     * @param request  The request object
+     * @return The wrapped resource containing the new bundle of the bitstream
+     * @throws SQLException
+     * @throws IOException
+     * @throws AuthorizeException
+     */
+    @RequestMapping(method = RequestMethod.PUT, consumes = {"text/uri-list"})
+    @PreAuthorize("hasPermission(#uuid, 'BITSTREAM','WRITE')")
+    @PostAuthorize("returnObject != null")
+    public BundleRest move(@PathVariable UUID uuid, HttpServletResponse response,
+                               HttpServletRequest request)
+            throws SQLException, IOException, AuthorizeException {
+        Context context = ContextUtil.obtainContext(request);
+
+        List<DSpaceObject> dsoList = utils.constructDSpaceObjectList(context, utils.getStringListFromRequest(request));
+
+        if (dsoList.size() != 1 || dsoList.get(0).getType() != BUNDLE) {
+            throw new UnprocessableEntityException("No bundle has been specified " +
+                    "or the data cannot be resolved to a bundle.");
+        }
+
+        Bitstream bitstream = bitstreamService.find(context, uuid);
+        if (bitstream == null) {
+            throw new ResourceNotFoundException("Bitstream with id: " + uuid + " not found");
+        }
+
+        BundleRest bundleRest = bitstreamRestRepository.performBitstreamMove(context, bitstream,
+                (Bundle) dsoList.get(0));
+
+        context.commit();
+
+        return bundleRest;
+    }
+}

dspace-server-webapp/src/main/java/org/dspace/app/rest/BitstreamRestController.java

@@ -8,6 +8,7 @@
 package org.dspace.app.rest;
 
 import static org.dspace.app.rest.utils.ContextUtil.obtainContext;
+import static org.dspace.app.rest.utils.RegexUtils.REGEX_REQUESTMAPPING_IDENTIFIER_AS_UUID;
 import static org.springframework.web.bind.annotation.RequestMethod.PUT;
 
 import java.io.IOException;
@@ -22,10 +23,11 @@ import javax.ws.rs.core.Response;
 import org.apache.catalina.connector.ClientAbortException;
 import org.apache.commons.lang3.tuple.Pair;
 import org.apache.logging.log4j.Logger;
-import org.dspace.app.rest.converter.BitstreamConverter;
+import org.dspace.app.rest.converter.ConverterService;
 import org.dspace.app.rest.exception.DSpaceBadRequestException;
 import org.dspace.app.rest.model.BitstreamRest;
 import org.dspace.app.rest.model.hateoas.BitstreamResource;
+import org.dspace.app.rest.projection.Projection;
 import org.dspace.app.rest.utils.ContextUtil;
 import org.dspace.app.rest.utils.MultipartFileSender;
 import org.dspace.app.rest.utils.Utils;
@@ -65,7 +67,7 @@ import org.springframework.web.bind.annotation.RestController;
  */
 @RestController
 @RequestMapping("/api/" + BitstreamRest.CATEGORY + "/" + BitstreamRest.PLURAL_NAME
-    + "/{uuid:[0-9a-fxA-FX]{8}-[0-9a-fxA-FX]{4}-[0-9a-fxA-FX]{4}-[0-9a-fxA-FX]{4}-[0-9a-fxA-FX]{12}}")
+    + REGEX_REQUESTMAPPING_IDENTIFIER_AS_UUID)
 public class BitstreamRestController {
 
     private static final Logger log = org.apache.logging.log4j.LogManager
@@ -90,7 +92,7 @@ public class BitstreamRestController {
     private ConfigurationService configurationService;
 
     @Autowired
-    BitstreamConverter converter;
+    ConverterService converter;
 
     @Autowired
     Utils utils;
@@ -238,7 +240,7 @@ public class BitstreamRestController {
 
         context.commit();
 
-        return (BitstreamResource) utils.getResourceRepository(BitstreamRest.CATEGORY, BitstreamRest.NAME)
-                .wrapResource(converter.fromModel(context.reloadEntity(bitstream)));
+        BitstreamRest bitstreamRest = converter.toRest(context.reloadEntity(bitstream), Projection.DEFAULT);
+        return converter.toResource(bitstreamRest);
     }
 }

dspace-server-webapp/src/main/java/org/dspace/app/rest/BundleUploadBitstreamController.java

@@ -0,0 +1,117 @@
+/**
+ * The contents of this file are subject to the license and copyright
+ * detailed in the LICENSE and NOTICE files at the root of the source
+ * tree and available online at
+ *
+ * http://www.dspace.org/license/
+ */
+package org.dspace.app.rest;
+
+import static org.dspace.app.rest.utils.RegexUtils.REGEX_REQUESTMAPPING_IDENTIFIER_AS_UUID;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.sql.SQLException;
+import java.util.UUID;
+import javax.servlet.http.HttpServletRequest;
+
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+import org.dspace.app.rest.converter.ConverterService;
+import org.dspace.app.rest.exception.UnprocessableEntityException;
+import org.dspace.app.rest.model.BitstreamRest;
+import org.dspace.app.rest.model.BundleRest;
+import org.dspace.app.rest.model.hateoas.BitstreamResource;
+import org.dspace.app.rest.repository.BundleRestRepository;
+import org.dspace.app.rest.utils.ContextUtil;
+import org.dspace.app.rest.utils.Utils;
+import org.dspace.content.Bundle;
+import org.dspace.content.service.BundleService;
+import org.dspace.core.Context;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.rest.webmvc.ControllerUtils;
+import org.springframework.data.rest.webmvc.ResourceNotFoundException;
+import org.springframework.hateoas.ResourceSupport;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.multipart.MultipartFile;
+
+/**
+ * Controller to upload bitstreams to a certain bundle, indicated by a uuid in the request
+ * Usage: POST /api/core/bundles/{uuid}/bitstreams (with file and properties of file in request)
+ * Example:
+ * <pre>
+ * {@code
+ * curl https://<dspace.server.url>/api/core/bundles/d3599177-0408-403b-9f8d-d300edd79edb/bitstreams
+ *  -XPOST -H 'Content-Type: multipart/form-data' \
+ *  -H 'Authorization: Bearer eyJhbGciOiJI...' \
+ *  -F "file=@Downloads/test.html" \
+ *  -F 'properties={ "name": "test.html", "metadata": { "dc.description": [ { "value": "example file", "language": null,
+ *          "authority": null, "confidence": -1, "place": 0 } ]}, "bundleName": "ORIGINAL" };type=application/json'
+ * }
+ * </pre>
+ */
+@RestController
+@RequestMapping("/api/" + BundleRest.CATEGORY + "/" + BundleRest.PLURAL_NAME + "/"
+        + REGEX_REQUESTMAPPING_IDENTIFIER_AS_UUID + "/" + BitstreamRest.PLURAL_NAME)
+public class BundleUploadBitstreamController {
+
+    private static final Logger log = LogManager.getLogger();
+
+    @Autowired
+    protected Utils utils;
+
+    @Autowired
+    private BundleService bundleService;
+
+    @Autowired
+    private BundleRestRepository bundleRestRepository;
+
+    @Autowired
+    private ConverterService converter;
+
+    /**
+     * Method to upload a Bitstream to a Bundle with the given UUID in the URL. This will create a Bitstream with the
+     * file provided in the request and attach this to the Item that matches the UUID in the URL.
+     * This will only work for uploading one file, any extra files will silently be ignored
+     *
+     * @return The created BitstreamResource
+     */
+    @RequestMapping(method = RequestMethod.POST, headers = "content-type=multipart/form-data")
+    @PreAuthorize("hasPermission(#uuid, 'BUNDLE', 'ADD') && hasPermission(#uuid, 'BUNDLE', 'WRITE')")
+    public ResponseEntity<ResourceSupport> uploadBitstream(HttpServletRequest request, @PathVariable UUID uuid,
+                                           @RequestParam("file") MultipartFile uploadfile,
+                                           @RequestParam(value = "properties", required = false) String properties) {
+
+        Context context = ContextUtil.obtainContext(request);
+        Bundle bundle = null;
+        try {
+            bundle = bundleService.find(context, uuid);
+        } catch (SQLException e) {
+            log.error("Something went wrong trying to find the Bundle with uuid: " + uuid, e);
+        }
+        if (bundle == null) {
+            throw new ResourceNotFoundException("The given uuid did not resolve to a Bundle on the server: " + uuid);
+        }
+        InputStream fileInputStream = null;
+        try {
+            fileInputStream = uploadfile.getInputStream();
+        } catch (IOException e) {
+            log.error("Something went wrong when trying to read the inputstream from the given file in the request",
+                      e);
+            throw new UnprocessableEntityException("The InputStream from the file couldn't be read", e);
+        }
+
+        BitstreamRest bitstreamRest = bundleRestRepository.uploadBitstream(
+                context, bundle, uploadfile.getOriginalFilename(), fileInputStream, properties);
+        BitstreamResource bitstreamResource = converter.toResource(bitstreamRest);
+
+        return ControllerUtils.toResponseEntity(HttpStatus.CREATED, null, bitstreamResource);
+    }
+}

dspace-server-webapp/src/main/java/org/dspace/app/rest/CollectionHarvestSettingsController.java

@@ -12,6 +12,7 @@ import java.util.UUID;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 
+import org.dspace.app.rest.converter.ConverterService;
 import org.dspace.app.rest.converter.HarvestedCollectionConverter;
 import org.dspace.app.rest.link.HalLinkService;
 import org.dspace.app.rest.model.HarvestedCollectionRest;
@@ -48,6 +49,9 @@ public class CollectionHarvestSettingsController {
     @Autowired
     CollectionService collectionService;
 
+    @Autowired
+    ConverterService converter;
+
     @Autowired
     HarvestedCollectionService harvestedCollectionService;
 
@@ -80,9 +84,7 @@ public class CollectionHarvestSettingsController {
         }
 
         HarvestedCollectionRest harvestedCollectionRest = harvestedCollectionRestRepository.findOne(collection);
-        HarvestedCollectionResource resource = new HarvestedCollectionResource(harvestedCollectionRest);
-
-        halLinkService.addLinks(resource);
+        HarvestedCollectionResource resource = converter.toResource(harvestedCollectionRest);
 
         return resource;
     }
@@ -114,8 +116,7 @@ public class CollectionHarvestSettingsController {
 
         // Return a harvestedCollectionResource only if a new harvestedCollection was created
         if (harvestedCollectionRest != null) {
-            harvestedCollectionResource = new HarvestedCollectionResource(harvestedCollectionRest);
-            halLinkService.addLinks(harvestedCollectionResource);
+            harvestedCollectionResource = converter.toResource(harvestedCollectionRest);
         }
 
         context.commit();

dspace-server-webapp/src/main/java/org/dspace/app/rest/DiscoveryRestController.java

@@ -14,6 +14,7 @@ import java.util.Objects;
 import org.apache.commons.lang3.StringUtils;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
+import org.dspace.app.rest.converter.ConverterService;
 import org.dspace.app.rest.link.HalLinkService;
 import org.dspace.app.rest.model.FacetConfigurationRest;
 import org.dspace.app.rest.model.FacetResultsRest;
@@ -61,6 +62,9 @@ public class DiscoveryRestController implements InitializingBean {
     @Autowired
     private HalLinkService halLinkService;
 
+    @Autowired
+    private ConverterService converter;
+
     @Override
     public void afterPropertiesSet() throws Exception {
         discoverableEndpointsService
@@ -74,8 +78,7 @@ public class DiscoveryRestController implements InitializingBean {
         throws Exception {
 
         SearchSupportRest searchSupportRest = discoveryRestRepository.getSearchSupport();
-        SearchSupportResource searchSupportResource = new SearchSupportResource(searchSupportRest);
-        halLinkService.addLinks(searchSupportResource);
+        SearchSupportResource searchSupportResource = converter.toResource(searchSupportRest);
         return searchSupportResource;
     }
 
@@ -91,9 +94,7 @@ public class DiscoveryRestController implements InitializingBean {
         SearchConfigurationRest searchConfigurationRest = discoveryRestRepository
             .getSearchConfiguration(dsoScope, configuration);
 
-        SearchConfigurationResource searchConfigurationResource = new SearchConfigurationResource(
-            searchConfigurationRest);
-        halLinkService.addLinks(searchConfigurationResource);
+        SearchConfigurationResource searchConfigurationResource = converter.toResource(searchConfigurationRest);
         return searchConfigurationResource;
     }
 
@@ -142,9 +143,8 @@ public class DiscoveryRestController implements InitializingBean {
         }
 
         //Get the Search results in JSON format
-        SearchResultsRest searchResultsRest = null;
-        searchResultsRest = discoveryRestRepository
-            .getSearchObjects(query, dsoType, dsoScope, configuration, searchFilters, page);
+        SearchResultsRest searchResultsRest = discoveryRestRepository
+            .getSearchObjects(query, dsoType, dsoScope, configuration, searchFilters, page, utils.obtainProjection());
 
         //Convert the Search JSON results to paginated HAL resources
         SearchResultsResource searchResultsResource = new SearchResultsResource(searchResultsRest, utils, page);
@@ -164,7 +164,7 @@ public class DiscoveryRestController implements InitializingBean {
 
         FacetConfigurationRest facetConfigurationRest = discoveryRestRepository
             .getFacetsConfiguration(dsoScope, configuration);
-        FacetConfigurationResource facetConfigurationResource = new FacetConfigurationResource(facetConfigurationRest);
+        FacetConfigurationResource facetConfigurationResource = converter.toResource(facetConfigurationRest);
 
         halLinkService.addLinks(facetConfigurationResource, pageable);
         return facetConfigurationResource;
@@ -192,7 +192,7 @@ public class DiscoveryRestController implements InitializingBean {
         FacetResultsRest facetResultsRest = discoveryRestRepository
             .getFacetObjects(facetName, prefix, query, dsoType, dsoScope, configuration, searchFilters, page);
 
-        FacetResultsResource facetResultsResource = new FacetResultsResource(facetResultsRest);
+        FacetResultsResource facetResultsResource = converter.toResource(facetResultsRest);
 
         halLinkService.addLinks(facetResultsResource, page);
         return facetResultsResource;

dspace-server-webapp/src/main/java/org/dspace/app/rest/HarvesterMetadataController.java

@@ -12,12 +12,12 @@ import java.util.Map;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 
+import org.dspace.app.rest.converter.ConverterService;
 import org.dspace.app.rest.link.HalLinkService;
 import org.dspace.app.rest.model.HarvesterMetadataRest;
 import org.dspace.app.rest.model.hateoas.HarvesterMetadataResource;
 import org.dspace.app.rest.utils.Utils;
 import org.dspace.harvest.OAIHarvester;
-
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestMethod;
@@ -38,6 +38,9 @@ public class HarvesterMetadataController {
     @Autowired
     private HalLinkService halLinkService;
 
+    @Autowired
+    private ConverterService converter;
+
     /**
      * GET endpoint that returns all available metadata formats
      * @param request   The request object
@@ -46,15 +49,14 @@ public class HarvesterMetadataController {
      */
     @RequestMapping(method = RequestMethod.GET)
     public HarvesterMetadataResource get(HttpServletRequest request,
-                                     HttpServletResponse response) {
+                                         HttpServletResponse response) {
         List<Map<String,String>> configs = OAIHarvester.getAvailableMetadataFormats();
 
         HarvesterMetadataRest data = new HarvesterMetadataRest();
+        data.setProjection(utils.obtainProjection());
         data.setConfigs(configs);
 
-        HarvesterMetadataResource resource = new HarvesterMetadataResource(data, utils);
-        halLinkService.addLinks(resource);
-
+        HarvesterMetadataResource resource = converter.toResource(data);
         return resource;
     }
 

dspace-server-webapp/src/main/java/org/dspace/app/rest/IdentifierRestController.java

@@ -13,15 +13,15 @@ import java.io.IOException;
 import java.net.URI;
 import java.sql.SQLException;
 import java.util.Arrays;
-
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 
 import org.apache.log4j.Logger;
 import org.atteo.evo.inflector.English;
-import org.dspace.app.rest.converter.GenericDSpaceObjectConverter;
+import org.dspace.app.rest.converter.ConverterService;
 import org.dspace.app.rest.model.DSpaceObjectRest;
 import org.dspace.app.rest.utils.ContextUtil;
+import org.dspace.app.rest.utils.Utils;
 import org.dspace.content.DSpaceObject;
 import org.dspace.core.Context;
 import org.dspace.identifier.IdentifierNotFoundException;
@@ -53,7 +53,10 @@ public class IdentifierRestController implements InitializingBean {
             Logger.getLogger(IdentifierRestController.class);
 
     @Autowired
-    private GenericDSpaceObjectConverter converter;
+    private ConverterService converter;
+
+    @Autowired
+    private Utils utils;
 
     @Autowired
     private DiscoverableEndpointsService discoverableEndpointsService;
@@ -84,7 +87,7 @@ public class IdentifierRestController implements InitializingBean {
         try {
             dso = identifierService.resolve(context, id);
             if (dso != null) {
-                DSpaceObjectRest dsor = converter.convert(dso);
+                DSpaceObjectRest dsor = converter.toRest(dso, utils.obtainProjection());
                 URI link = linkTo(dsor.getController(), dsor.getCategory(),
                         English.plural(dsor.getType()))
                         .slash(dsor.getId()).toUri();

dspace-server-webapp/src/main/java/org/dspace/app/rest/ItemAddBundleController.java

@@ -0,0 +1,114 @@
+/**
+ * The contents of this file are subject to the license and copyright
+ * detailed in the LICENSE and NOTICE files at the root of the source
+ * tree and available online at
+ *
+ * http://www.dspace.org/license/
+ */
+package org.dspace.app.rest;
+
+import static org.dspace.app.rest.utils.RegexUtils.REGEX_REQUESTMAPPING_IDENTIFIER_AS_UUID;
+
+import java.io.IOException;
+import java.sql.SQLException;
+import java.util.UUID;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.dspace.app.rest.converter.ConverterService;
+import org.dspace.app.rest.converter.MetadataConverter;
+import org.dspace.app.rest.exception.UnprocessableEntityException;
+import org.dspace.app.rest.model.BundleRest;
+import org.dspace.app.rest.model.ItemRest;
+import org.dspace.app.rest.model.hateoas.BundleResource;
+import org.dspace.app.rest.projection.Projection;
+import org.dspace.app.rest.repository.ItemRestRepository;
+import org.dspace.app.rest.utils.ContextUtil;
+import org.dspace.app.rest.utils.Utils;
+import org.dspace.authorize.AuthorizeException;
+import org.dspace.content.Bundle;
+import org.dspace.content.Item;
+import org.dspace.content.service.ItemService;
+import org.dspace.core.Context;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.rest.webmvc.ControllerUtils;
+import org.springframework.data.rest.webmvc.ResourceNotFoundException;
+import org.springframework.hateoas.ResourceSupport;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.RestController;
+
+/**
+ * Controller to add bundles to a certain item, indicated by a uuid in the request
+ * Usage: POST /api/core/items/<:uuid>/bundles (with name and metadata of bundle in request json)
+ * Example:
+ * <pre>
+ * {@code
+ * curl -X POST https://<dspace.server.url>/api/core/items/1911e8a4-6939-490c-b58b-a5d70f8d91fb/bundles
+ *  -H 'Authorization: Bearer eyJhbGciOiJI...'
+ *  -H 'Content-Type: application/json
+ *  -d {
+ *      "name": "ORIGINAL",
+ *      "metadata": {...}
+ *     }
+ * }
+ * </pre>
+ */
+@RestController
+@RequestMapping("/api/" + ItemRest.CATEGORY + "/" + ItemRest.PLURAL_NAME + REGEX_REQUESTMAPPING_IDENTIFIER_AS_UUID
+        + "/" + BundleRest.PLURAL_NAME)
+public class ItemAddBundleController {
+
+    @Autowired
+    ConverterService converter;
+
+    @Autowired
+    ItemService itemService;
+
+    @Autowired
+    ItemRestRepository itemRestRepository;
+
+    @Autowired
+    MetadataConverter metadataConverter;
+
+    @Autowired
+    Utils utils;
+
+    /**
+     * Method to add a Bundle to an Item with the given UUID in the URL. This will create a Bundle with the
+     * name provided in the request and attach this to the Item that matches the UUID in the URL.
+     *
+     * @return The created BundleResource
+     */
+    @RequestMapping(method = RequestMethod.POST)
+    @PreAuthorize("hasPermission(#uuid, 'ITEM', 'ADD')")
+    public ResponseEntity<ResourceSupport> addBundleToItem(@PathVariable UUID uuid,
+                                                           HttpServletRequest request,
+                                                           HttpServletResponse response)
+            throws SQLException, AuthorizeException {
+        Context context = ContextUtil.obtainContext(request);
+
+        Item item = itemService.find(context, uuid);
+
+        if (item == null) {
+            throw new ResourceNotFoundException("Could not find item with id " + uuid);
+        }
+
+        BundleRest bundleRest;
+        try {
+            bundleRest = new ObjectMapper().readValue(request.getInputStream(), BundleRest.class);
+        } catch (IOException excIO) {
+            throw new UnprocessableEntityException("Could not parse request body");
+        }
+
+        Bundle bundle = itemRestRepository.addBundleToItem(context, item, bundleRest);
+        BundleResource bundleResource = converter.toResource(converter.toRest(bundle, Projection.DEFAULT));
+        return ControllerUtils.toResponseEntity(HttpStatus.CREATED, null, bundleResource);
+    }
+
+}

dspace-server-webapp/src/main/java/org/dspace/app/rest/ItemOwningCollectionUpdateRestController.java

@@ -7,6 +7,7 @@
  */
 package org.dspace.app.rest;
 
+import static org.dspace.app.rest.utils.RegexUtils.REGEX_REQUESTMAPPING_IDENTIFIER_AS_UUID;
 import static org.dspace.core.Constants.COLLECTION;
 
 import java.io.IOException;
@@ -16,10 +17,11 @@ import java.util.UUID;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 
-import org.dspace.app.rest.converter.CollectionConverter;
+import org.dspace.app.rest.converter.ConverterService;
 import org.dspace.app.rest.exception.DSpaceBadRequestException;
 import org.dspace.app.rest.exception.UnprocessableEntityException;
 import org.dspace.app.rest.model.CollectionRest;
+import org.dspace.app.rest.projection.Projection;
 import org.dspace.app.rest.utils.ContextUtil;
 import org.dspace.app.rest.utils.Utils;
 import org.dspace.authorize.AuthorizeException;
@@ -41,13 +43,11 @@ import org.springframework.web.bind.annotation.RequestMethod;
 import org.springframework.web.bind.annotation.RestController;
 
 /**
- * This controller will handle all the incoming calls on the api/code/items/{itemUuid}/owningCollection endpoint
- * where the itemUuid corresponds to the item of which you want to edit the owning collection.
+ * This controller will handle all the incoming calls on the api/code/items/{uuid}/owningCollection endpoint
+ * where the uuid corresponds to the item of which you want to edit the owning collection.
  */
 @RestController
-@RequestMapping("/api/core/items/" +
-        "{itemUuid:[0-9a-fxA-FX]{8}-[0-9a-fxA-FX]{4}-[0-9a-fxA-FX]{4}-[0-9a-fxA-FX]{4}-[0-9a-fxA-FX]{12" +
-        "}}/owningCollection")
+@RequestMapping("/api/core/items" + REGEX_REQUESTMAPPING_IDENTIFIER_AS_UUID + "/owningCollection")
 public class ItemOwningCollectionUpdateRestController {
 
     @Autowired
@@ -60,7 +60,7 @@ public class ItemOwningCollectionUpdateRestController {
     AuthorizeService authorizeService;
 
     @Autowired
-    CollectionConverter converter;
+    ConverterService converter;
 
     @Autowired
     Utils utils;
@@ -69,7 +69,7 @@ public class ItemOwningCollectionUpdateRestController {
      * This method will update the owning collection of the item that correspond to the provided item uuid, effectively
      * moving the item to the new collection.
      *
-     * @param itemUuid The UUID of the item that will be moved
+     * @param uuid The UUID of the item that will be moved
      * @param response The response object
      * @param request  The request object
      * @return The wrapped resource containing the new owning collection or null when the item was not moved
@@ -78,9 +78,9 @@ public class ItemOwningCollectionUpdateRestController {
      * @throws AuthorizeException If the user is not authorized to perform the move action
      */
     @RequestMapping(method = RequestMethod.PUT, consumes = {"text/uri-list"})
-    @PreAuthorize("hasPermission(#itemUuid, 'ITEM','WRITE')")
+    @PreAuthorize("hasPermission(#uuid, 'ITEM','WRITE')")
     @PostAuthorize("returnObject != null")
-    public CollectionRest move(@PathVariable UUID itemUuid, HttpServletResponse response,
+    public CollectionRest move(@PathVariable UUID uuid, HttpServletResponse response,
                                HttpServletRequest request)
             throws SQLException, IOException, AuthorizeException {
         Context context = ContextUtil.obtainContext(request);
@@ -92,12 +92,12 @@ public class ItemOwningCollectionUpdateRestController {
                                                            "or the data cannot be resolved to a collection.");
         }
 
-        Collection targetCollection = performItemMove(context, itemUuid, (Collection) dsoList.get(0));
+        Collection targetCollection = performItemMove(context, uuid, (Collection) dsoList.get(0));
 
         if (targetCollection == null) {
             return null;
         }
-        return converter.fromModel(targetCollection);
+        return converter.toRest(targetCollection, Projection.DEFAULT);
 
     }
 

dspace-server-webapp/src/main/java/org/dspace/app/rest/ItemUploadController.java

@@ -1,163 +0,0 @@
-/**
- * The contents of this file are subject to the license and copyright
- * detailed in the LICENSE and NOTICE files at the root of the source
- * tree and available online at
- *
- * http://www.dspace.org/license/
- */
-package org.dspace.app.rest;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.sql.SQLException;
-import java.util.UUID;
-import javax.servlet.http.HttpServletRequest;
-
-import com.fasterxml.jackson.databind.ObjectMapper;
-import org.apache.commons.lang3.StringUtils;
-import org.apache.logging.log4j.LogManager;
-import org.apache.logging.log4j.Logger;
-import org.dspace.app.rest.converter.BitstreamConverter;
-import org.dspace.app.rest.converter.MetadataConverter;
-import org.dspace.app.rest.exception.UnprocessableEntityException;
-import org.dspace.app.rest.model.BitstreamRest;
-import org.dspace.app.rest.model.hateoas.BitstreamResource;
-import org.dspace.app.rest.utils.ContextUtil;
-import org.dspace.app.rest.utils.Utils;
-import org.dspace.authorize.AuthorizeException;
-import org.dspace.content.Bitstream;
-import org.dspace.content.BitstreamFormat;
-import org.dspace.content.Item;
-import org.dspace.content.service.BitstreamFormatService;
-import org.dspace.content.service.BitstreamService;
-import org.dspace.content.service.ItemService;
-import org.dspace.core.Context;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.data.rest.webmvc.ResourceNotFoundException;
-import org.springframework.security.access.prepost.PreAuthorize;
-import org.springframework.web.bind.annotation.PathVariable;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RequestMethod;
-import org.springframework.web.bind.annotation.RequestParam;
-import org.springframework.web.bind.annotation.RestController;
-import org.springframework.web.multipart.MultipartFile;
-
-@RestController
-@RequestMapping("/api/core/items/{uuid}")
-public class ItemUploadController {
-
-    private static final Logger log = LogManager.getLogger();
-
-    @Autowired
-    protected Utils utils;
-
-    @Autowired
-    private ItemService itemService;
-
-    @Autowired
-    private BitstreamService bitstreamService;
-
-    @Autowired
-    private BitstreamConverter bitstreamConverter;
-
-    @Autowired
-    private MetadataConverter metadataConverter;
-
-    @Autowired
-    private BitstreamFormatService bitstreamFormatService;
-
-    /**
-     * Method to upload a Bitstream to an Item with the given UUID in the URL. This will create a Bitstream with the
-     * file provided in the request and attach this to the Item that matches the UUID in the URL.
-     * This will only work for uploading one file, any extra files will silently be ignored
-     * @return The created BitstreamResource
-     */
-    @RequestMapping(method = RequestMethod.POST, value = "/bitstreams", headers = "content-type=multipart/form-data")
-    @PreAuthorize("hasPermission(#uuid, 'ITEM', 'WRITE') && hasPermission(#uuid, 'ITEM', 'ADD')")
-    public BitstreamResource uploadBitstream(HttpServletRequest request, @PathVariable UUID uuid,
-                                             @RequestParam("file") MultipartFile uploadfile,
-                                             @RequestParam(value = "properties", required = false) String properties) {
-
-        Context context = ContextUtil.obtainContext(request);
-        Item item = null;
-        Bitstream bitstream = null;
-        try {
-            item = itemService.find(context, uuid);
-        } catch (SQLException e) {
-            log.error("Something went wrong trying to find the Item with uuid: " + uuid, e);
-        }
-        if (item == null) {
-            throw new ResourceNotFoundException("The given uuid did not resolve to an Item on the server: " + uuid);
-        }
-        InputStream fileInputStream = null;
-        try {
-            fileInputStream = uploadfile.getInputStream();
-        } catch (IOException e) {
-            log.error("Something went wrong when trying to read the inputstream from the given file in the request",
-                    e);
-            throw new UnprocessableEntityException("The InputStream from the file couldn't be read", e);
-        }
-        try {
-            bitstream = processBitstreamCreation(context, item, fileInputStream, properties,
-                                                 uploadfile.getOriginalFilename());
-            itemService.update(context, item);
-            context.commit();
-        } catch (AuthorizeException | IOException | SQLException e) {
-            String message = "Something went wrong with trying to create the single bitstream for file with filename: "
-                    + uploadfile.getOriginalFilename()
-                    + " for item with uuid: " + uuid + " and possible properties: " + properties;
-            log.error(message, e);
-            throw new RuntimeException(message, e);
-        }
-        return new BitstreamResource(bitstreamConverter.fromModel(bitstream), utils);
-    }
-
-    /**
-     * Creates the bitstream based on the given parameters
-     * @param context           The context
-     * @param item              The item where the bitstream should be store
-     * @param fileInputStream   The input stream used to create the bitstream
-     * @param properties        The properties to be assigned to the bitstream
-     * @param originalFilename  The filename as it was uploaded
-     * @return                  The bitstream which has been created
-     */
-    private Bitstream processBitstreamCreation(Context context, Item item, InputStream fileInputStream,
-                                               String properties, String originalFilename)
-        throws AuthorizeException, IOException, SQLException {
-
-        Bitstream bitstream = null;
-        if (StringUtils.isNotBlank(properties)) {
-            ObjectMapper mapper = new ObjectMapper();
-            BitstreamRest bitstreamRest = null;
-            try {
-                bitstreamRest = mapper.readValue(properties, BitstreamRest.class);
-            } catch (Exception e) {
-                throw new UnprocessableEntityException("The properties parameter was incorrect: " + properties);
-            }
-            String bundleName = bitstreamRest.getBundleName();
-            if (StringUtils.isBlank(bundleName)) {
-                throw new UnprocessableEntityException("Properties without a bundleName is not allowed");
-            }
-            bitstream = itemService.createSingleBitstream(context, fileInputStream, item, bundleName);
-            if (bitstreamRest.getMetadata() != null) {
-                metadataConverter.setMetadata(context, bitstream, bitstreamRest.getMetadata());
-            }
-            String name = bitstreamRest.getName();
-            if (StringUtils.isNotBlank(name)) {
-                bitstream.setName(context, name);
-            } else {
-                bitstream.setName(context, originalFilename);
-            }
-
-        } else {
-            bitstream = itemService.createSingleBitstream(context, fileInputStream, item);
-            bitstream.setName(context, originalFilename);
-
-        }
-        BitstreamFormat bitstreamFormat = bitstreamFormatService.guessFormat(context, bitstream);
-        bitstreamService.setFormat(context, bitstream, bitstreamFormat);
-        bitstreamService.update(context, bitstream);
-
-        return bitstream;
-    }
-}

dspace-server-webapp/src/main/java/org/dspace/app/rest/MappedCollectionRestController.java

@@ -7,6 +7,7 @@
  */
 package org.dspace.app.rest;
 
+import static org.dspace.app.rest.utils.RegexUtils.REGEX_REQUESTMAPPING_IDENTIFIER_AS_UUID;
 import static org.dspace.core.Constants.COLLECTION;
 
 import java.io.IOException;
@@ -18,7 +19,7 @@ import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 
 import org.apache.log4j.Logger;
-import org.dspace.app.rest.converter.CollectionConverter;
+import org.dspace.app.rest.converter.ConverterService;
 import org.dspace.app.rest.exception.MethodNotAllowedException;
 import org.dspace.app.rest.exception.UnprocessableEntityException;
 import org.dspace.app.rest.link.HalLinkService;
@@ -46,9 +47,7 @@ import org.springframework.web.bind.annotation.RestController;
  * This class will typically receive a UUID that resolves to an Item and it'll perform logic on its collections
  */
 @RestController
-@RequestMapping("/api/core/items/" +
-        "{uuid:[0-9a-fxA-FX]{8}-[0-9a-fxA-FX]{4}-[0-9a-fxA-FX]{4}-[0-9a-fxA-FX]{4}-[0-9a-fxA-FX]{12}}" +
-        "/mappedCollections")
+@RequestMapping("/api/core/items" + REGEX_REQUESTMAPPING_IDENTIFIER_AS_UUID + "/mappedCollections")
 public class MappedCollectionRestController {
 
     private static final Logger log = Logger.getLogger(MappedCollectionRestController.class);
@@ -57,7 +56,7 @@ public class MappedCollectionRestController {
     private ItemService itemService;
 
     @Autowired
-    private CollectionConverter collectionConverter;
+    private ConverterService converter;
 
     @Autowired
     private CollectionService collectionService;
@@ -100,18 +99,16 @@ public class MappedCollectionRestController {
         List<CollectionRest> mappingCollectionRest = new LinkedList<>();
         for (Collection collection : collections) {
             if (collection.getID() != owningCollectionUuid) {
-                mappingCollectionRest.add(collectionConverter.fromModel(collection));
+                mappingCollectionRest.add(converter.toRest(collection, utils.obtainProjection()));
             }
         }
 
         MappedCollectionRestWrapper mappingCollectionRestWrapper = new MappedCollectionRestWrapper();
+        mappingCollectionRestWrapper.setProjection(utils.obtainProjection());
         mappingCollectionRestWrapper.setMappedCollectionRestList(mappingCollectionRest);
         mappingCollectionRestWrapper.setItem(item);
-        MappedCollectionResourceWrapper mappingCollectionResourceWrapper = new MappedCollectionResourceWrapper(
-                mappingCollectionRestWrapper, utils, pageable);
-
-
-        halLinkService.addLinks(mappingCollectionResourceWrapper);
+        MappedCollectionResourceWrapper mappingCollectionResourceWrapper =
+                converter.toResource(mappingCollectionRestWrapper);
 
         return mappingCollectionResourceWrapper;
 

dspace-server-webapp/src/main/java/org/dspace/app/rest/MappedItemRestController.java

@@ -7,6 +7,8 @@
  */
 package org.dspace.app.rest;
 
+import static org.dspace.app.rest.utils.RegexUtils.REGEX_REQUESTMAPPING_IDENTIFIER_AS_UUID;
+
 import java.util.Iterator;
 import java.util.LinkedList;
 import java.util.List;
@@ -15,7 +17,7 @@ import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 
 import org.apache.log4j.Logger;
-import org.dspace.app.rest.converter.ItemConverter;
+import org.dspace.app.rest.converter.ConverterService;
 import org.dspace.app.rest.link.HalLinkService;
 import org.dspace.app.rest.model.ItemRest;
 import org.dspace.app.rest.model.MappedItemRestWrapper;
@@ -40,8 +42,7 @@ import org.springframework.web.bind.annotation.RestController;
  * have the given collection as their owning collection
  */
 @RestController
-@RequestMapping("/api/core/collections/" +
-    "{uuid:[0-9a-fxA-FX]{8}-[0-9a-fxA-FX]{4}-[0-9a-fxA-FX]{4}-[0-9a-fxA-FX]{4}-[0-9a-fxA-FX]{12}}/mappedItems")
+@RequestMapping("/api/core/collections" + REGEX_REQUESTMAPPING_IDENTIFIER_AS_UUID + "/mappedItems")
 public class MappedItemRestController {
 
     private static final Logger log = Logger.getLogger(MappedItemRestController.class);
@@ -53,7 +54,7 @@ public class MappedItemRestController {
     private ItemService itemService;
 
     @Autowired
-    private ItemConverter itemConverter;
+    private ConverterService converter;
 
     @Autowired
     Utils utils;
@@ -95,11 +96,12 @@ public class MappedItemRestController {
         while (itemIterator.hasNext()) {
             Item item = itemIterator.next();
             if (item.getOwningCollection().getID() != uuid) {
-                mappedItemRestList.add(itemConverter.fromModel(item));
+                mappedItemRestList.add(converter.toRest(item, utils.obtainProjection()));
             }
         }
 
         MappedItemRestWrapper mappedItemRestWrapper = new MappedItemRestWrapper();
+        mappedItemRestWrapper.setProjection(utils.obtainProjection());
         mappedItemRestWrapper.setMappedItemRestList(mappedItemRestList);
         mappedItemRestWrapper.setCollectionUuid(uuid);
         MappedItemResourceWrapper mappedItemResourceWrapper =

dspace-server-webapp/src/main/java/org/dspace/app/rest/RelationshipRestController.java

@@ -7,6 +7,8 @@
  */
 package org.dspace.app.rest;
 
+import static org.dspace.app.rest.utils.RegexUtils.REGEX_REQUESTMAPPING_IDENTIFIER_AS_DIGIT;
+
 import java.sql.SQLException;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
@@ -29,11 +31,6 @@ import org.springframework.web.bind.annotation.RestController;
 @RequestMapping("/api/core/relationships")
 public class RelationshipRestController {
 
-    /**
-     * Regular expression in the request mapping to accept number as identifier
-     */
-    private static final String REGEX_REQUESTMAPPING_IDENTIFIER_AS_DIGIT = "/{id:\\d+}";
-
     @Autowired
     private RelationshipRestRepository relationshipRestRepository;
 

dspace-server-webapp/src/main/java/org/dspace/app/rest/RelationshipTypeRestController.java

@@ -13,11 +13,12 @@ import java.util.List;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 
-import org.dspace.app.rest.converter.RelationshipTypeConverter;
+import org.dspace.app.rest.converter.ConverterService;
 import org.dspace.app.rest.link.HalLinkService;
 import org.dspace.app.rest.model.RelationshipTypeRest;
 import org.dspace.app.rest.model.RelationshipTypeRestWrapper;
 import org.dspace.app.rest.model.hateoas.RelationshipTypeResourceWrapper;
+import org.dspace.app.rest.projection.Projection;
 import org.dspace.app.rest.utils.ContextUtil;
 import org.dspace.app.rest.utils.Utils;
 import org.dspace.content.EntityType;
@@ -48,7 +49,7 @@ public class RelationshipTypeRestController {
     private EntityTypeService entityTypeService;
 
     @Autowired
-    private RelationshipTypeConverter relationshipTypeConverter;
+    private ConverterService converter;
 
     @Autowired
     private Utils utils;
@@ -67,7 +68,8 @@ public class RelationshipTypeRestController {
      * @throws SQLException If something goes wrong
      */
     @RequestMapping(method = RequestMethod.GET)
-    public RelationshipTypeResourceWrapper retrieve(@PathVariable Integer id, HttpServletResponse response,
+    public RelationshipTypeResourceWrapper retrieve(@PathVariable Integer id,
+                                                    HttpServletResponse response,
                                                     HttpServletRequest request) throws SQLException {
         Context context = ContextUtil.obtainContext(request);
         EntityType entityType = entityTypeService.find(context, id);
@@ -75,19 +77,19 @@ public class RelationshipTypeRestController {
 
         List<RelationshipTypeRest> relationshipTypeRests = new LinkedList<>();
 
+        Projection projection = utils.obtainProjection();
         for (RelationshipType relationshipType : list) {
-            relationshipTypeRests.add(relationshipTypeConverter.fromModel(relationshipType));
+            relationshipTypeRests.add(converter.toRest(relationshipType, projection));
         }
 
-
         RelationshipTypeRestWrapper relationshipTypeRestWrapper = new RelationshipTypeRestWrapper();
+        relationshipTypeRestWrapper.setProjection(projection);
         relationshipTypeRestWrapper.setEntityTypeId(id);
         relationshipTypeRestWrapper.setEntityTypeLabel(entityType.getLabel());
         relationshipTypeRestWrapper.setRelationshipTypeRestList(relationshipTypeRests);
 
-        RelationshipTypeResourceWrapper relationshipTypeResourceWrapper = new RelationshipTypeResourceWrapper(
-            relationshipTypeRestWrapper, utils);
-        halLinkService.addLinks(relationshipTypeResourceWrapper);
+        RelationshipTypeResourceWrapper relationshipTypeResourceWrapper =
+                converter.toResource(relationshipTypeRestWrapper);
         return relationshipTypeResourceWrapper;
     }
 }

dspace-server-webapp/src/main/java/org/dspace/app/rest/RestResourceController.java

@@ -7,6 +7,9 @@
  */
 package org.dspace.app.rest;
 
+import static org.dspace.app.rest.utils.RegexUtils.REGEX_REQUESTMAPPING_IDENTIFIER_AS_DIGIT;
+import static org.dspace.app.rest.utils.RegexUtils.REGEX_REQUESTMAPPING_IDENTIFIER_AS_STRING_VERSION_STRONG;
+import static org.dspace.app.rest.utils.RegexUtils.REGEX_REQUESTMAPPING_IDENTIFIER_AS_UUID;
 import static org.springframework.hateoas.mvc.ControllerLinkBuilder.linkTo;
 import static org.springframework.hateoas.mvc.ControllerLinkBuilder.methodOn;
 
@@ -19,17 +22,16 @@ import java.sql.SQLException;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.UUID;
-
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 
 import com.fasterxml.jackson.databind.JsonNode;
 import com.fasterxml.jackson.databind.ObjectMapper;
-
 import org.apache.commons.collections4.CollectionUtils;
 import org.apache.commons.lang3.StringUtils;
 import org.apache.logging.log4j.Logger;
 import org.atteo.evo.inflector.English;
+import org.dspace.app.rest.converter.ConverterService;
 import org.dspace.app.rest.converter.JsonPatchConverter;
 import org.dspace.app.rest.exception.DSpaceBadRequestException;
 import org.dspace.app.rest.exception.PaginationException;
@@ -64,7 +66,6 @@ import org.springframework.data.rest.webmvc.ResourceNotFoundException;
 import org.springframework.data.web.PagedResourcesAssembler;
 import org.springframework.hateoas.Link;
 import org.springframework.hateoas.PagedResources;
-import org.springframework.hateoas.Resource;
 import org.springframework.hateoas.ResourceSupport;
 import org.springframework.hateoas.Resources;
 import org.springframework.hateoas.UriTemplate;
@@ -95,24 +96,6 @@ import org.springframework.web.multipart.MultipartFile;
 @SuppressWarnings("rawtypes")
 public class RestResourceController implements InitializingBean {
 
-    /**
-     * Regular expression in the request mapping to accept UUID as identifier
-     */
-    private static final String REGEX_REQUESTMAPPING_IDENTIFIER_AS_UUID =
-        "/{uuid:[0-9a-fxA-FX]{8}-[0-9a-fxA-FX]{4}-[0-9a-fxA-FX]{4}-[0-9a-fxA-FX]{4}-[0-9a-fxA-FX]{12}}";
-
-    /**
-     * Regular expression in the request mapping to accept a string as identifier but not the other kind of
-     * identifier (digits or uuid)
-     */
-    private static final String REGEX_REQUESTMAPPING_IDENTIFIER_AS_STRING_VERSION_STRONG = "/{id:^(?!^\\d+$)" +
-        "(?!^[0-9a-fxA-FX]{8}-[0-9a-fxA-FX]{4}-[0-9a-fxA-FX]{4}-[0-9a-fxA-FX]{4}-[0-9a-fxA-FX]{12}$)[\\w+\\-]+$+}";
-
-    /**
-     * Regular expression in the request mapping to accept number as identifier
-     */
-    private static final String REGEX_REQUESTMAPPING_IDENTIFIER_AS_DIGIT = "/{id:\\d+}";
-
     private static final Logger log = org.apache.logging.log4j.LogManager.getLogger(RestResourceController.class);
 
     @Autowired
@@ -130,6 +113,9 @@ public class RestResourceController implements InitializingBean {
     @Autowired
     HalLinkService linkService;
 
+    @Autowired
+    ConverterService converter;
+
     @Override
     public void afterPropertiesSet() {
         List<Link> links = new ArrayList<Link>();
@@ -152,22 +138,20 @@ public class RestResourceController implements InitializingBean {
      *
      * Note that the regular expression in the request mapping accept a number as identifier;
      *
-     * Please see {@link RestResourceController#findOne(String, String, String, String)} for findOne with string as
+     * Please see {@link RestResourceController#findOne(String, String, String)} for findOne with string as
      * identifier
-     * and see {@link RestResourceController#findOne(String, String, UUID, String)} for uuid as identifier
+     * and see {@link RestResourceController#findOne(String, String, UUID)} for uuid as identifier
      *
      * @param apiCategory
      * @param model
      * @param id
-     * @param projection
      * @return
      */
     @RequestMapping(method = RequestMethod.GET, value = REGEX_REQUESTMAPPING_IDENTIFIER_AS_DIGIT)
     @SuppressWarnings("unchecked")
     public DSpaceResource<RestAddressableModel> findOne(@PathVariable String apiCategory, @PathVariable String model,
-                                                        @PathVariable Integer id,
-                                                        @RequestParam(required = false) String projection) {
-        return findOneInternal(apiCategory, model, id, projection);
+                                                        @PathVariable Integer id) {
+        return findOneInternal(apiCategory, model, id);
     }
 
     /**
@@ -186,22 +170,20 @@ public class RestResourceController implements InitializingBean {
      * </pre>
      *
      *
-     * Please see {@link RestResourceController#findOne(String, String, Integer, String)} for findOne with number as
+     * Please see {@link RestResourceController#findOne(String, String, Integer)} for findOne with number as
      * identifier
-     * and see {@link RestResourceController#findOne(String, String, UUID, String)} for uuid as identifier
+     * and see {@link RestResourceController#findOne(String, String, UUID)} for uuid as identifier
      *
      * @param apiCategory
      * @param model
      * @param id
-     * @param projection
      * @return
      */
     @RequestMapping(method = RequestMethod.GET, value = REGEX_REQUESTMAPPING_IDENTIFIER_AS_STRING_VERSION_STRONG)
     @SuppressWarnings("unchecked")
     public DSpaceResource<RestAddressableModel> findOne(@PathVariable String apiCategory, @PathVariable String model,
-                                                        @PathVariable String id,
-                                                        @RequestParam(required = false) String projection) {
-        return findOneInternal(apiCategory, model, id, projection);
+                                                        @PathVariable String id) {
+        return findOneInternal(apiCategory, model, id);
     }
 
     /**
@@ -209,22 +191,20 @@ public class RestResourceController implements InitializingBean {
      *
      * Note that the regular expression in the request mapping accept a UUID as identifier;
      *
-     * Please see {@link RestResourceController#findOne(String, String, Integer, String)} for findOne with number as
+     * Please see {@link RestResourceController#findOne(String, String, Integer)} for findOne with number as
      * identifier
-     * and see {@link RestResourceController#findOne(String, String, String, String)} for string as identifier
+     * and see {@link RestResourceController#findOne(String, String, String)} for string as identifier
      *
      * @param apiCategory
      * @param model
      * @param uuid
-     * @param projection
      * @return
      */
     @RequestMapping(method = RequestMethod.GET, value = REGEX_REQUESTMAPPING_IDENTIFIER_AS_UUID)
     @SuppressWarnings("unchecked")
     public DSpaceResource<RestAddressableModel> findOne(@PathVariable String apiCategory, @PathVariable String model,
-                                                        @PathVariable UUID uuid,
-                                                        @RequestParam(required = false) String projection) {
-        return findOneInternal(apiCategory, model, uuid, projection);
+                                                        @PathVariable UUID uuid) {
+        return findOneInternal(apiCategory, model, uuid);
     }
 
     /**
@@ -233,13 +213,10 @@ public class RestResourceController implements InitializingBean {
      * @param apiCategory
      * @param model
      * @param id
-     * @param projection
      * @return
      */
     private <ID extends Serializable> DSpaceResource<RestAddressableModel> findOneInternal(String apiCategory,
-                                                                                           String model, ID id,
-                                                                                           String projection) {
-        checkModelPluralForm(apiCategory, model);
+                                                                                           String model, ID id) {
         DSpaceRestRepository<RestAddressableModel, ID> repository = utils.getResourceRepository(apiCategory, model);
         RestAddressableModel modelObject = null;
         try {
@@ -250,9 +227,7 @@ public class RestResourceController implements InitializingBean {
         if (modelObject == null) {
             throw new ResourceNotFoundException(apiCategory + "." + model + " with id: " + id + " not found");
         }
-        DSpaceResource result = repository.wrapResource(modelObject);
-        linkService.addLinks(result);
-        return result;
+        return converter.toResource(modelObject);
     }
 
     /**
@@ -267,7 +242,6 @@ public class RestResourceController implements InitializingBean {
      * @param rel
      * @param page
      * @param assembler
-     * @param projection
      * @return
      */
     @RequestMapping(method = RequestMethod.GET, value = REGEX_REQUESTMAPPING_IDENTIFIER_AS_DIGIT + "/{rel}")
@@ -275,9 +249,8 @@ public class RestResourceController implements InitializingBean {
                                    @PathVariable String apiCategory,
                                    @PathVariable String model, @PathVariable Integer id, @PathVariable String rel,
                                    Pageable page,
-                                   PagedResourcesAssembler assembler,
-                                   @RequestParam(required = false) String projection) {
-        return findRelInternal(request, response, apiCategory, model, id, rel, page, assembler, projection);
+                                   PagedResourcesAssembler assembler) {
+        return findRelInternal(request, response, apiCategory, model, id, rel, page, assembler);
     }
 
     /**
@@ -293,7 +266,6 @@ public class RestResourceController implements InitializingBean {
      * @param rel
      * @param page
      * @param assembler
-     * @param projection
      * @return
      */
     @RequestMapping(method = RequestMethod.GET, value = REGEX_REQUESTMAPPING_IDENTIFIER_AS_STRING_VERSION_STRONG +
@@ -302,9 +274,8 @@ public class RestResourceController implements InitializingBean {
                                    @PathVariable String apiCategory,
                                    @PathVariable String model, @PathVariable String id, @PathVariable String rel,
                                    Pageable page,
-                                   PagedResourcesAssembler assembler,
-                                   @RequestParam(required = false) String projection) {
-        return findRelInternal(request, response, apiCategory, model, id, rel, page, assembler, projection);
+                                   PagedResourcesAssembler assembler) {
+        return findRelInternal(request, response, apiCategory, model, id, rel, page, assembler);
     }
 
     /**
@@ -319,7 +290,6 @@ public class RestResourceController implements InitializingBean {
      * @param rel
      * @param page
      * @param assembler
-     * @param projection
      * @return
      */
     @RequestMapping(method = RequestMethod.GET, value = REGEX_REQUESTMAPPING_IDENTIFIER_AS_UUID + "/{rel}")
@@ -327,9 +297,8 @@ public class RestResourceController implements InitializingBean {
                                    @PathVariable String apiCategory,
                                    @PathVariable String model, @PathVariable UUID uuid, @PathVariable String rel,
                                    Pageable page,
-                                   PagedResourcesAssembler assembler,
-                                   @RequestParam(required = false) String projection) {
-        return findRelInternal(request, response, apiCategory, model, uuid, rel, page, assembler, projection);
+                                   PagedResourcesAssembler assembler) {
+        return findRelInternal(request, response, apiCategory, model, uuid, rel, page, assembler);
     }
 
     /**
@@ -362,7 +331,6 @@ public class RestResourceController implements InitializingBean {
      * @param relid
      * @param page
      * @param assembler
-     * @param projection
      * @return
      */
     @RequestMapping(method = RequestMethod.GET, value = REGEX_REQUESTMAPPING_IDENTIFIER_AS_STRING_VERSION_STRONG +
@@ -371,9 +339,8 @@ public class RestResourceController implements InitializingBean {
                                    @PathVariable String apiCategory,
                                    @PathVariable String model, @PathVariable String id, @PathVariable String rel,
                                    @PathVariable String relid,
-                                   Pageable page, PagedResourcesAssembler assembler,
-                                   @RequestParam(required = false) String projection) throws Throwable {
-        return findRelEntryInternal(request, response, apiCategory, model, id, rel, relid, page, assembler, projection);
+                                   Pageable page, PagedResourcesAssembler assembler) throws Throwable {
+        return findRelEntryInternal(request, response, apiCategory, model, id, rel, relid, page, assembler);
     }
 
 
@@ -458,8 +425,7 @@ public class RestResourceController implements InitializingBean {
         if (modelObject == null) {
             return ControllerUtils.toEmptyResponse(HttpStatus.CREATED);
         }
-        DSpaceResource result = repository.wrapResource(modelObject);
-        linkService.addLinks(result);
+        DSpaceResource result = converter.toResource(modelObject);
         //TODO manage HTTPHeader
         return ControllerUtils.toResponseEntity(HttpStatus.CREATED, null, result);
     }
@@ -491,8 +457,7 @@ public class RestResourceController implements InitializingBean {
         if (modelObject == null) {
             return ControllerUtils.toEmptyResponse(HttpStatus.CREATED);
         }
-        DSpaceResource result = repository.wrapResource(modelObject);
-        linkService.addLinks(result);
+        DSpaceResource result = converter.toResource(modelObject);
         //TODO manage HTTPHeader
         return ControllerUtils.toResponseEntity(HttpStatus.CREATED, null, result);
     }
@@ -530,8 +495,7 @@ public class RestResourceController implements InitializingBean {
         }
 
         if (modelObject != null) {
-            DSpaceResource result = repository.wrapResource(modelObject);
-            linkService.addLinks(result);
+            DSpaceResource result = converter.toResource(modelObject);
             return ControllerUtils.toResponseEntity(HttpStatus.CREATED, null, result);
         } else {
             return ControllerUtils.toEmptyResponse(HttpStatus.NO_CONTENT);
@@ -622,8 +586,7 @@ public class RestResourceController implements InitializingBean {
             log.error(e.getMessage(), e);
             return ControllerUtils.toEmptyResponse(HttpStatus.INTERNAL_SERVER_ERROR);
         }
-        DSpaceResource result = repository.wrapResource(modelObject);
-        linkService.addLinks(result);
+        DSpaceResource result = converter.toResource(modelObject);
         return ControllerUtils.toResponseEntity(HttpStatus.CREATED, null, result);
     }
 
@@ -660,8 +623,7 @@ public class RestResourceController implements InitializingBean {
 
         List<DSpaceResource> resources = new ArrayList<>();
         for (T modelObject : content) {
-            DSpaceResource result = repository.wrapResource(modelObject);
-            linkService.addLinks(result);
+            DSpaceResource result = converter.toResource(modelObject);
             resources.add(result);
         }
         return ControllerUtils.toResponseEntity(HttpStatus.OK, null, Resources.wrap(resources));
@@ -740,8 +702,7 @@ public class RestResourceController implements InitializingBean {
             log.error(e.getMessage(), e);
             throw e;
         }
-        DSpaceResource result = repository.wrapResource(modelObject);
-        linkService.addLinks(result);
+        DSpaceResource result = converter.toResource(modelObject);
         //TODO manage HTTPHeader
         return ControllerUtils.toResponseEntity(HttpStatus.OK, null, result);
 
@@ -758,7 +719,6 @@ public class RestResourceController implements InitializingBean {
      * @param relid
      * @param page
      * @param assembler
-     * @param projection
      * @return
      */
     private <ID extends Serializable> ResourceSupport findRelEntryInternal(HttpServletRequest request,
@@ -766,26 +726,24 @@ public class RestResourceController implements InitializingBean {
                                                                            String apiCategory, String model,
                                                                            String id, String rel, String relid,
                                                                            Pageable page,
-                                                                           PagedResourcesAssembler assembler,
-                                                                           String projection) throws Throwable {
+                                                                           PagedResourcesAssembler assembler)
+            throws Throwable {
         checkModelPluralForm(apiCategory, model);
         DSpaceRestRepository<RestAddressableModel, ID> repository = utils.getResourceRepository(apiCategory, model);
         Class<RestAddressableModel> domainClass = repository.getDomainClass();
 
-        LinkRest linkRest = utils.getLinkRest(rel, domainClass);
+        LinkRest linkRest = utils.getClassLevelLinkRest(rel, domainClass);
         if (linkRest != null) {
             LinkRestRepository linkRepository = utils.getLinkResourceRepository(apiCategory, model, linkRest.name());
-            Method linkMethod = repositoryUtils.getLinkMethod("getResource", linkRepository);
-
+            Method linkMethod = utils.requireMethod(linkRepository.getClass(), "getResource");
             try {
-                Object object = linkMethod.invoke(linkRepository, request, id, relid, page, projection);
+                Object object = linkMethod.invoke(linkRepository, request, id, relid, page, utils.obtainProjection());
                 Link link = linkTo(this.getClass(), apiCategory, model).slash(id).slash(rel).slash(relid).withSelfRel();
 
                 List result = new ArrayList();
                 result.add(object);
                 PageImpl<RestAddressableModel> pageResult = new PageImpl(result, page, 1);
-                Page<HALResource> halResources = pageResult.map(linkRepository::wrapResource);
-                halResources.forEach(linkService::addLinks);
+                Page<HALResource> halResources = pageResult.map(restObject -> converter.toResource(restObject));
                 return assembler.toResource(halResources, link);
             } catch (InvocationTargetException e) {
                 // This catch has been made to resolve the issue that caused AuthorizeDenied exceptions for the methods
@@ -812,63 +770,52 @@ public class RestResourceController implements InitializingBean {
      * @param apiCategory
      * @param model
      * @param uuid
-     * @param rel
      * @param page
      * @param assembler
-     * @param projection
      * @return
      */
     private <ID extends Serializable> ResourceSupport findRelInternal(HttpServletRequest request,
                                                                       HttpServletResponse response, String apiCategory,
                                                                       String model, ID uuid, String subpath,
-                                                                      Pageable page, PagedResourcesAssembler assembler,
-                                                                      String projection) {
+                                                                      Pageable page,
+                                                                      PagedResourcesAssembler assembler) {
         checkModelPluralForm(apiCategory, model);
         DSpaceRestRepository<RestAddressableModel, ID> repository = utils.getResourceRepository(apiCategory, model);
         Class<RestAddressableModel> domainClass = repository.getDomainClass();
 
-        LinkRest linkRest = utils.getLinkRest(subpath, domainClass);
+        LinkRest linkRest = utils.getClassLevelLinkRest(subpath, domainClass);
         PagedResources<? extends HALResource> result;
 
         if (linkRest != null) {
             LinkRestRepository linkRepository = utils.getLinkResourceRepository(apiCategory, model, linkRest.name());
-            Method linkMethod = repositoryUtils.getLinkMethod(linkRest.method(), linkRepository);
+            Method linkMethod = utils.requireMethod(linkRepository.getClass(), linkRest.method());
+            try {
+                if (Page.class.isAssignableFrom(linkMethod.getReturnType())) {
+                    Page<? extends RestModel> pageResult = (Page<? extends RestAddressableModel>) linkMethod
+                            .invoke(linkRepository, request, uuid, page, utils.obtainProjection(true));
 
-            if (linkMethod == null) {
-                // TODO custom exception
-                throw new RuntimeException(
-                        "Method for relation " + subpath + " not found: " + linkRest.name() + ":" + linkRest.method());
-            } else {
-                try {
-                    if (Page.class.isAssignableFrom(linkMethod.getReturnType())) {
-                        Page<? extends RestModel> pageResult = (Page<? extends RestAddressableModel>) linkMethod
-                                .invoke(linkRepository, request, uuid, page, projection);
-
-                        Link link = null;
-                        String querystring = request.getQueryString();
-                        if (querystring != null && querystring.length() > 0) {
-                            link = linkTo(this.getClass(), apiCategory, model).slash(uuid)
-                                .slash(subpath + '?' + querystring).withSelfRel();
-                        } else {
-                            link = linkTo(this.getClass(), apiCategory, model).slash(uuid).slash(subpath).withSelfRel();
-                        }
-
-                        Page<HALResource> halResources = pageResult.map(linkRepository::wrapResource);
-                        halResources.forEach(linkService::addLinks);
-
-                        return assembler.toResource(halResources, link);
+                    Link link = null;
+                    String querystring = request.getQueryString();
+                    if (querystring != null && querystring.length() > 0) {
+                        link = linkTo(this.getClass(), apiCategory, model).slash(uuid)
+                            .slash(subpath + '?' + querystring).withSelfRel();
                     } else {
-                        RestModel object = (RestModel) linkMethod.invoke(linkRepository, request, uuid, page,
-                                projection);
-                        Link link = linkTo(this.getClass(), apiCategory, model).slash(uuid).slash(subpath)
-                                .withSelfRel();
-                        HALResource tmpresult = linkRepository.wrapResource(object);
-                        tmpresult.add(link);
-                        return tmpresult;
+                        link = linkTo(this.getClass(), apiCategory, model).slash(uuid).slash(subpath).withSelfRel();
                     }
-                } catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException e) {
-                    throw new RuntimeException(e.getMessage(), e);
+
+                    Page<HALResource> halResources = pageResult.map(object -> converter.toResource(object));
+                    return assembler.toResource(halResources, link);
+                } else {
+                    RestModel object = (RestModel) linkMethod.invoke(linkRepository, request, uuid, page,
+                            utils.obtainProjection());
+                    Link link = linkTo(this.getClass(), apiCategory, model).slash(uuid).slash(subpath)
+                            .withSelfRel();
+                    HALResource tmpresult = converter.toResource(object);
+                    tmpresult.add(link);
+                    return tmpresult;
                 }
+            } catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException e) {
+                throw new RuntimeException(e.getMessage(), e);
             }
         }
         RestAddressableModel modelObject = repository.findOne(uuid);
@@ -877,8 +824,7 @@ public class RestResourceController implements InitializingBean {
             throw new ResourceNotFoundException(apiCategory + "." + model + " with id: " + uuid + " not found");
         }
 
-        DSpaceResource resource = repository.wrapResource(modelObject, subpath);
-        linkService.addLinks(resource);
+        DSpaceResource resource = converter.toResource(modelObject);
 
         String rel = null;
 
@@ -919,16 +865,7 @@ public class RestResourceController implements InitializingBean {
                 .getResourceRepository(fullList.get(0).getCategory(), fullList.get(0).getType());
             PageImpl<RestAddressableModel> pageResult = new PageImpl(fullList.subList(start, end), page,
                                                                      fullList.size());
-            result = assembler.toResource(pageResult.map(resourceRepository::wrapResource));
-
-            for (Resource subObj : result) {
-                if (subObj.getContent() instanceof HALResource) {
-                    linkService.addLinks((HALResource) subObj.getContent());
-                }
-            }
-            return result;
-
-
+            return assembler.toResource(pageResult.map(converter::toResource));
         } else {
             if (resource.getEmbeddedResources().get(rel) == null) {
                 response.setStatus(HttpServletResponse.SC_NO_CONTENT);
@@ -945,7 +882,6 @@ public class RestResourceController implements InitializingBean {
      * @param model
      * @param page
      * @param assembler
-     * @param projection
      * @return
      */
     @RequestMapping(method = RequestMethod.GET)
@@ -954,18 +890,15 @@ public class RestResourceController implements InitializingBean {
                                                                                       @PathVariable String model,
                                                                                       Pageable page,
                                                                                       PagedResourcesAssembler assembler,
-                                                                                      @RequestParam(required = false)
-                                                                                              String projection,
                                                                                       HttpServletResponse response) {
         DSpaceRestRepository<T, ?> repository = utils.getResourceRepository(apiCategory, model);
         Link link = linkTo(methodOn(this.getClass(), apiCategory, model).findAll(apiCategory, model,
-                                                                                 page, assembler, projection, response))
+                                                                                 page, assembler, response))
             .withSelfRel();
 
         Page<DSpaceResource<T>> resources;
         try {
-            resources = repository.findAll(page).map(repository::wrapResource);
-            resources.forEach(linkService::addLinks);
+            resources = repository.findAll(page).map(converter::toResource);
         } catch (PaginationException pe) {
             resources = new PageImpl<DSpaceResource<T>>(new ArrayList<DSpaceResource<T>>(), page, pe.getTotal());
         } catch (RepositoryMethodNotImplementedException mne) {
@@ -1044,18 +977,15 @@ public class RestResourceController implements InitializingBean {
             if (searchResult == null) {
                 resources = new PageImpl(new ArrayList(), pageable, 0);
             } else {
-                resources = ((Page<T>) searchResult).map(repository::wrapResource);
+                resources = ((Page<T>) searchResult).map(converter::toResource);
             }
-            resources.forEach(linkService::addLinks);
             result = assembler.toResource(resources, link);
         } else {
             if (searchResult == null) {
                 response.setStatus(HttpServletResponse.SC_NO_CONTENT);
                 return null;
             }
-            DSpaceResource<T> dsResource = repository.wrapResource((T) searchResult);
-            linkService.addLinks(dsResource);
-            result = dsResource;
+            return converter.toResource((T) searchResult);
         }
         return result;
     }
@@ -1204,9 +1134,7 @@ public class RestResourceController implements InitializingBean {
         if (modelObject == null) {
             throw new ResourceNotFoundException(apiCategory + "." + model + " with id: " + id + " not found");
         }
-        DSpaceResource result = repository.wrapResource(modelObject);
-        linkService.addLinks(result);
-        return result;
+        return converter.toResource(modelObject);
 
     }
     /**
@@ -1229,9 +1157,6 @@ public class RestResourceController implements InitializingBean {
         if (modelObject == null) {
             throw new ResourceNotFoundException(apiCategory + "." + model + " with id: " + id + " not found");
         }
-        DSpaceResource result = repository.wrapResource(modelObject);
-        linkService.addLinks(result);
-        return result;
-
+        return converter.toResource(modelObject);
     }
 }

dspace-server-webapp/src/main/java/org/dspace/app/rest/RootRestResourceController.java

@@ -9,8 +9,8 @@ package org.dspace.app.rest;
 
 import javax.servlet.http.HttpServletRequest;
 
+import org.dspace.app.rest.converter.ConverterService;
 import org.dspace.app.rest.link.HalLinkService;
-import org.dspace.app.rest.model.RootRest;
 import org.dspace.app.rest.model.hateoas.RootResource;
 import org.dspace.app.rest.repository.RootRestRepository;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -39,13 +39,11 @@ public class RootRestResourceController {
     @Autowired
     RootRestRepository rootRestRepository;
 
+    @Autowired
+    ConverterService converter;
+
     @RequestMapping(method = RequestMethod.GET)
     public RootResource listDefinedEndpoint(HttpServletRequest request) {
-
-        RootRest rootRest = rootRestRepository.getRoot();
-        RootResource rootResource = new RootResource(rootRest);
-        halLinkService.addLinks(rootResource);
-
-        return rootResource;
+        return converter.toResource(rootRestRepository.getRoot());
     }
 }

dspace-server-webapp/src/main/java/org/dspace/app/rest/ScriptProcessesController.java

@@ -0,0 +1,62 @@
+/**
+ * The contents of this file are subject to the license and copyright
+ * detailed in the LICENSE and NOTICE files at the root of the source
+ * tree and available online at
+ *
+ * http://www.dspace.org/license/
+ */
+package org.dspace.app.rest;
+
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+import org.dspace.app.rest.converter.ConverterService;
+import org.dspace.app.rest.model.ProcessRest;
+import org.dspace.app.rest.model.ScriptRest;
+import org.dspace.app.rest.model.hateoas.ProcessResource;
+import org.dspace.app.rest.repository.ScriptRestRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.rest.webmvc.ControllerUtils;
+import org.springframework.hateoas.ResourceSupport;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.RestController;
+
+/**
+ * This controller adds additional subresource methods to allow connecting scripts with processes
+ */
+@RestController
+@RequestMapping("/api/" + ScriptRest.CATEGORY + "/" + ScriptRest.PLURAL_NAME + "/{name}/processes")
+public class ScriptProcessesController {
+
+    private static final Logger log = LogManager.getLogger();
+
+    @Autowired
+    private ConverterService converter;
+
+    @Autowired
+    private ScriptRestRepository scriptRestRepository;
+
+    /**
+     * This method can be called by sending a POST request to the system/scripts/{name}/processes endpoint
+     * This will start a process for the script that matches the given name
+     * @param scriptName    The name of the script that we want to start a process for
+     * @return              The ProcessResource object for the created process
+     * @throws Exception    If something goes wrong
+     */
+    @RequestMapping(method = RequestMethod.POST)
+    @PreAuthorize("hasAuthority('ADMIN')")
+    public ResponseEntity<ResourceSupport> startProcess(@PathVariable(name = "name") String scriptName)
+        throws Exception {
+        if (log.isTraceEnabled()) {
+            log.trace("Starting Process for Script with name: " + scriptName);
+        }
+        ProcessRest processRest = scriptRestRepository.startProcess(scriptName);
+        ProcessResource processResource = converter.toResource(processRest);
+        return ControllerUtils.toResponseEntity(HttpStatus.ACCEPTED, null, processResource);
+    }
+
+}

dspace-server-webapp/src/main/java/org/dspace/app/rest/StatisticsRestController.java

@@ -10,6 +10,7 @@ package org.dspace.app.rest;
 import java.util.Arrays;
 import java.util.UUID;
 
+import org.dspace.app.rest.converter.ConverterService;
 import org.dspace.app.rest.exception.RepositoryMethodNotImplementedException;
 import org.dspace.app.rest.link.HalLinkService;
 import org.dspace.app.rest.model.RestAddressableModel;
@@ -47,6 +48,9 @@ public class StatisticsRestController implements InitializingBean {
     @Autowired
     private HalLinkService halLinkService;
 
+    @Autowired
+    private ConverterService converter;
+
     @Autowired
     private StatisticsRestRepository statisticsRestRepository;
 
@@ -65,12 +69,10 @@ public class StatisticsRestController implements InitializingBean {
 
     @RequestMapping(method = RequestMethod.GET)
     public StatisticsSupportResource getStatisticsSupport() throws Exception {
-
         StatisticsSupportRest statisticsSupportRest = statisticsRestRepository.getStatisticsSupport();
-        StatisticsSupportResource statisticsSupportResource = new StatisticsSupportResource(statisticsSupportRest);
-        halLinkService.addLinks(statisticsSupportResource);
-        return statisticsSupportResource;
+        return converter.toResource(statisticsSupportRest);
     }
+
     @RequestMapping(method = RequestMethod.GET, value = "/viewevents/{uuid}")
     public PagedResources<ViewEventResource> getViewEvent(@PathVariable(name = "uuid") UUID uuid) throws Exception {
         throw new RepositoryMethodNotImplementedException("No implementation found; Method not allowed!", "");
@@ -93,13 +95,13 @@ public class StatisticsRestController implements InitializingBean {
 
     @RequestMapping(method = RequestMethod.POST, value = "/viewevents")
     public ResponseEntity<ResourceSupport> postViewEvent() throws Exception {
-        ViewEventResource result = new ViewEventResource(viewEventRestRepository.createViewEvent(), utils);
+        ViewEventResource result = converter.toResource(viewEventRestRepository.createViewEvent());
         return ControllerUtils.toResponseEntity(HttpStatus.CREATED, null, result);
     }
 
     @RequestMapping(method = RequestMethod.POST, value = "/searchevents")
     public ResponseEntity<ResourceSupport> postSearchEvent() throws Exception {
-        SearchEventResource result =  new SearchEventResource(searchEventRestRepository.createSearchEvent(), utils);
+        SearchEventResource result = converter.toResource(searchEventRestRepository.createSearchEvent());
         return ControllerUtils.toResponseEntity(HttpStatus.CREATED, null, result);
     }
 

dspace-server-webapp/src/main/java/org/dspace/app/rest/UUIDLookupRestController.java

@@ -14,14 +14,14 @@ import java.net.URI;
 import java.sql.SQLException;
 import java.util.Arrays;
 import java.util.UUID;
-
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 
 import org.apache.log4j.Logger;
-import org.dspace.app.rest.converter.GenericDSpaceObjectConverter;
+import org.dspace.app.rest.converter.ConverterService;
 import org.dspace.app.rest.model.DSpaceObjectRest;
 import org.dspace.app.rest.utils.ContextUtil;
+import org.dspace.app.rest.utils.Utils;
 import org.dspace.content.DSpaceObject;
 import org.dspace.content.factory.ContentServiceFactory;
 import org.dspace.content.service.DSpaceObjectService;
@@ -57,6 +57,9 @@ public class UUIDLookupRestController implements InitializingBean {
     @Autowired
     private ContentServiceFactory contentServiceFactory;
 
+    @Autowired
+    private Utils utils;
+
     private static final Logger log =
             Logger.getLogger(UUIDLookupRestController.class);
 
@@ -64,7 +67,7 @@ public class UUIDLookupRestController implements InitializingBean {
     private DiscoverableEndpointsService discoverableEndpointsService;
 
     @Autowired
-    private GenericDSpaceObjectConverter converter;
+    private ConverterService converter;
 
     @Override
     public void afterPropertiesSet() throws Exception {
@@ -92,7 +95,7 @@ public class UUIDLookupRestController implements InitializingBean {
                     .getDSpaceObjectServices()) {
                 DSpaceObject dso = dSpaceObjectService.find(context, uuid);
                 if (dso != null) {
-                    DSpaceObjectRest dsor = converter.convert(dso);
+                    DSpaceObjectRest dsor = converter.toRest(dso, utils.obtainProjection());
                     URI link = linkTo(dsor.getController(), dsor.getCategory(), dsor.getTypePlural())
                             .slash(dsor.getId()).toUri();
                     response.setStatus(HttpServletResponse.SC_FOUND);

dspace-server-webapp/src/main/java/org/dspace/app/rest/converter/AInprogressItemConverter.java

@@ -17,6 +17,7 @@ import org.dspace.app.rest.model.AInprogressSubmissionRest;
 import org.dspace.app.rest.model.ErrorRest;
 import org.dspace.app.rest.model.SubmissionDefinitionRest;
 import org.dspace.app.rest.model.SubmissionSectionRest;
+import org.dspace.app.rest.projection.Projection;
 import org.dspace.app.rest.submit.AbstractRestProcessingStep;
 import org.dspace.app.rest.submit.SubmissionService;
 import org.dspace.app.util.SubmissionConfigReader;
@@ -47,22 +48,13 @@ public abstract class AInprogressItemConverter<T extends InProgressSubmission<ID
     private static final Logger log = org.apache.logging.log4j.LogManager.getLogger(AInprogressItemConverter.class);
 
     @Autowired
-    private EPersonConverter epersonConverter;
-
-    @Autowired
-    private ItemConverter itemConverter;
-
-    @Autowired
-    private CollectionConverter collectionConverter;
-
-    protected SubmissionConfigReader submissionConfigReader;
-
-    @Autowired
-    private SubmissionDefinitionConverter submissionDefinitionConverter;
+    private ConverterService converter;
 
     @Autowired
     private SubmissionSectionConverter submissionSectionConverter;
 
+    protected SubmissionConfigReader submissionConfigReader;
+
     @Autowired
     SubmissionService submissionService;
 
@@ -70,7 +62,7 @@ public abstract class AInprogressItemConverter<T extends InProgressSubmission<ID
         submissionConfigReader = new SubmissionConfigReader();
     }
 
-    protected void fillFromModel(T obj, R witem) {
+    protected void fillFromModel(T obj, R witem, Projection projection) {
         Collection collection = obj.getCollection();
         Item item = obj.getItem();
         EPerson submitter = null;
@@ -81,17 +73,17 @@ public abstract class AInprogressItemConverter<T extends InProgressSubmission<ID
         }
 
         witem.setId(obj.getID());
-        witem.setCollection(collection != null ? collectionConverter.convert(collection) : null);
-        witem.setItem(itemConverter.convert(item));
-        witem.setSubmitter(epersonConverter.convert(submitter));
+        witem.setCollection(collection != null ? converter.toRest(collection, projection) : null);
+        witem.setItem(converter.toRest(item, projection));
+        witem.setSubmitter(converter.toRest(submitter, projection));
 
         // 1. retrieve the submission definition
         // 2. iterate over the submission section to allow to plugin additional
         // info
 
         if (collection != null) {
-            SubmissionDefinitionRest def = submissionDefinitionConverter
-                .convert(submissionConfigReader.getSubmissionConfigByCollection(collection.getHandle()));
+            SubmissionDefinitionRest def = converter.toRest(
+                    submissionConfigReader.getSubmissionConfigByCollection(collection.getHandle()), projection);
             witem.setSubmissionDefinition(def);
             for (SubmissionSectionRest sections : def.getPanels()) {
                 SubmissionStepConfig stepConfig = submissionSectionConverter.toModel(sections);
@@ -150,4 +142,4 @@ public abstract class AInprogressItemConverter<T extends InProgressSubmission<ID
         }
     }
 
-}
+}

dspace-server-webapp/src/main/java/org/dspace/app/rest/converter/AuthorityEntryRestConverter.java

@@ -7,8 +7,8 @@
  */
 package org.dspace.app.rest.converter;
 
-import org.apache.commons.lang3.NotImplementedException;
 import org.dspace.app.rest.model.AuthorityEntryRest;
+import org.dspace.app.rest.projection.Projection;
 import org.dspace.app.rest.utils.AuthorityUtils;
 import org.dspace.content.authority.Choice;
 import org.springframework.stereotype.Component;
@@ -17,7 +17,7 @@ import org.springframework.stereotype.Component;
  * This is the converter from/to the Choice in the DSpace API data
  * model and the REST data model.
  *
- * TODO please do not use this convert but use the wrapper {@link AuthorityUtils#convertEntry(Choice, String)}}
+ * TODO please do not use this convert but use the wrapper {@link AuthorityUtils#convertEntry(Choice, String, String)}
  *
  * @author Luigi Andrea Pascarelli (luigiandrea.pascarelli at 4science.it)
  */
@@ -25,8 +25,9 @@ import org.springframework.stereotype.Component;
 public class AuthorityEntryRestConverter implements DSpaceConverter<Choice, AuthorityEntryRest> {
 
     @Override
-    public AuthorityEntryRest fromModel(Choice choice) {
+    public AuthorityEntryRest convert(Choice choice, Projection projection) {
         AuthorityEntryRest entry = new AuthorityEntryRest();
+        entry.setProjection(projection);
         entry.setValue(choice.value);
         entry.setDisplay(choice.label);
         entry.setId(choice.authority);
@@ -35,7 +36,7 @@ public class AuthorityEntryRestConverter implements DSpaceConverter<Choice, Auth
     }
 
     @Override
-    public Choice toModel(AuthorityEntryRest obj) {
-        throw new NotImplementedException("Method not implemented");
+    public Class<Choice> getModelClass() {
+        return Choice.class;
     }
 }

dspace-server-webapp/src/main/java/org/dspace/app/rest/converter/AuthorityRestConverter.java

@@ -7,8 +7,8 @@
  */
 package org.dspace.app.rest.converter;
 
-import org.apache.commons.lang3.NotImplementedException;
 import org.dspace.app.rest.model.AuthorityRest;
+import org.dspace.app.rest.projection.Projection;
 import org.dspace.app.rest.utils.AuthorityUtils;
 import org.dspace.content.authority.ChoiceAuthority;
 import org.springframework.stereotype.Component;
@@ -18,7 +18,7 @@ import org.springframework.stereotype.Component;
  * model and the REST data model
  *
  * TODO please do not use this convert but use the wrapper
- * {@link AuthorityUtils#convertAuthority(ChoiceAuthority, String)}
+ * {@link AuthorityUtils#convertAuthority(ChoiceAuthority, String, String)}
  *
  * @author Luigi Andrea Pascarelli (luigiandrea.pascarelli at 4science.it)
  */
@@ -26,8 +26,9 @@ import org.springframework.stereotype.Component;
 public class AuthorityRestConverter implements DSpaceConverter<ChoiceAuthority, AuthorityRest> {
 
     @Override
-    public AuthorityRest fromModel(ChoiceAuthority step) {
+    public AuthorityRest convert(ChoiceAuthority step, Projection projection) {
         AuthorityRest authorityRest = new AuthorityRest();
+        authorityRest.setProjection(projection);
         authorityRest.setHierarchical(step.isHierarchical());
         authorityRest.setScrollable(step.isScrollable());
         authorityRest.setIdentifier(step.hasIdentifier());
@@ -35,7 +36,7 @@ public class AuthorityRestConverter implements DSpaceConverter<ChoiceAuthority,
     }
 
     @Override
-    public ChoiceAuthority toModel(AuthorityRest obj) {
-        throw new NotImplementedException("Method not implemented");
+    public Class<ChoiceAuthority> getModelClass() {
+        return ChoiceAuthority.class;
     }
 }

dspace-server-webapp/src/main/java/org/dspace/app/rest/converter/BitstreamConverter.java

@@ -10,9 +10,9 @@ package org.dspace.app.rest.converter;
 import java.sql.SQLException;
 import java.util.List;
 
-import org.dspace.app.rest.model.BitstreamFormatRest;
 import org.dspace.app.rest.model.BitstreamRest;
 import org.dspace.app.rest.model.CheckSumRest;
+import org.dspace.app.rest.projection.Projection;
 import org.dspace.content.Bitstream;
 import org.dspace.content.Bundle;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -25,19 +25,14 @@ import org.springframework.stereotype.Component;
  * @author Andrea Bollini (andrea.bollini at 4science.it)
  */
 @Component
-public class BitstreamConverter
-    extends DSpaceObjectConverter<org.dspace.content.Bitstream, org.dspace.app.rest.model.BitstreamRest> {
-    @Autowired(required = true)
-    BitstreamFormatConverter bfConverter;
+public class BitstreamConverter extends DSpaceObjectConverter<Bitstream, BitstreamRest> {
+
+    @Autowired
+    ConverterService converter;
 
     @Override
-    public org.dspace.content.Bitstream toModel(org.dspace.app.rest.model.BitstreamRest obj) {
-        return super.toModel(obj);
-    }
-
-    @Override
-    public BitstreamRest fromModel(org.dspace.content.Bitstream obj) {
-        BitstreamRest b = super.fromModel(obj);
+    public BitstreamRest convert(org.dspace.content.Bitstream obj, Projection projection) {
+        BitstreamRest b = super.convert(obj, projection);
         b.setSequenceId(obj.getSequenceID());
         List<Bundle> bundles = null;
         try {
@@ -53,14 +48,11 @@ public class BitstreamConverter
         checksum.setCheckSumAlgorithm(obj.getChecksumAlgorithm());
         checksum.setValue(obj.getChecksum());
         b.setCheckSum(checksum);
-        BitstreamFormatRest format = null;
         try {
-            format = bfConverter.fromModel(obj.getFormat(null));
-        } catch (Exception e) {
-            // TODO Auto-generated catch block
-            e.printStackTrace();
+            b.setFormat(converter.toRest(obj.getFormat(null), projection));
+        } catch (SQLException e) {
+            throw new RuntimeException(e);
         }
-        b.setFormat(format);
         b.setSizeBytes(obj.getSizeBytes());
         return b;
     }
@@ -71,7 +63,7 @@ public class BitstreamConverter
     }
 
     @Override
-    protected Class<Bitstream> getModelClass() {
+    public Class<Bitstream> getModelClass() {
         return Bitstream.class;
     }
 }

dspace-server-webapp/src/main/java/org/dspace/app/rest/converter/BitstreamFormatConverter.java

@@ -8,6 +8,7 @@
 package org.dspace.app.rest.converter;
 
 import org.dspace.app.rest.model.BitstreamFormatRest;
+import org.dspace.app.rest.projection.Projection;
 import org.dspace.content.BitstreamFormat;
 import org.dspace.content.service.BitstreamFormatService;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -26,8 +27,9 @@ public class BitstreamFormatConverter implements DSpaceConverter<BitstreamFormat
     BitstreamFormatService bitstreamFormatService;
 
     @Override
-    public BitstreamFormatRest fromModel(BitstreamFormat obj) {
+    public BitstreamFormatRest convert(BitstreamFormat obj, Projection projection) {
         BitstreamFormatRest bf = new BitstreamFormatRest();
+        bf.setProjection(projection);
         bf.setId(obj.getID());
         bf.setShortDescription(obj.getShortDescription());
         bf.setDescription(obj.getDescription());
@@ -43,8 +45,7 @@ public class BitstreamFormatConverter implements DSpaceConverter<BitstreamFormat
     }
 
     @Override
-    public BitstreamFormat toModel(BitstreamFormatRest obj) {
-        // TODO Auto-generated method stub
-        return null;
+    public Class<BitstreamFormat> getModelClass() {
+        return BitstreamFormat.class;
     }
 }

dspace-server-webapp/src/main/java/org/dspace/app/rest/converter/BrowseIndexConverter.java

@@ -11,6 +11,7 @@ import java.util.ArrayList;
 import java.util.List;
 
 import org.dspace.app.rest.model.BrowseIndexRest;
+import org.dspace.app.rest.projection.Projection;
 import org.dspace.browse.BrowseIndex;
 import org.dspace.sort.SortException;
 import org.dspace.sort.SortOption;
@@ -24,9 +25,11 @@ import org.springframework.stereotype.Component;
  */
 @Component
 public class BrowseIndexConverter implements DSpaceConverter<BrowseIndex, BrowseIndexRest> {
+
     @Override
-    public BrowseIndexRest fromModel(BrowseIndex obj) {
+    public BrowseIndexRest convert(BrowseIndex obj, Projection projection) {
         BrowseIndexRest bir = new BrowseIndexRest();
+        bir.setProjection(projection);
         bir.setId(obj.getName());
         bir.setOrder(obj.getDefaultOrder());
         bir.setMetadataBrowse(obj.isMetadataIndex());
@@ -53,7 +56,7 @@ public class BrowseIndexConverter implements DSpaceConverter<BrowseIndex, Browse
     }
 
     @Override
-    public BrowseIndex toModel(BrowseIndexRest obj) {
-        return null;
+    public Class<BrowseIndex> getModelClass() {
+        return BrowseIndex.class;
     }
 }

dspace-server-webapp/src/main/java/org/dspace/app/rest/converter/BundleConverter.java

@@ -0,0 +1,48 @@
+/**
+ * The contents of this file are subject to the license and copyright
+ * detailed in the LICENSE and NOTICE files at the root of the source
+ * tree and available online at
+ *
+ * http://www.dspace.org/license/
+ */
+package org.dspace.app.rest.converter;
+
+import java.util.stream.Collectors;
+
+import org.dspace.app.rest.model.BitstreamRest;
+import org.dspace.app.rest.model.BundleRest;
+import org.dspace.app.rest.projection.Projection;
+import org.dspace.content.Bundle;
+import org.springframework.stereotype.Component;
+
+@Component
+public class BundleConverter
+    extends DSpaceObjectConverter<Bundle, BundleRest> {
+
+    @Override
+    public BundleRest convert(Bundle bundle, Projection projection) {
+        BundleRest bundleRest = super.convert(bundle, projection);
+
+        bundleRest.setBitstreams(bundle.getBitstreams()
+                                .stream()
+                                .map(x -> (BitstreamRest) converter.toRest(x, projection))
+                                .collect(Collectors.toList()));
+
+        if (bundle.getPrimaryBitstream() != null) {
+            BitstreamRest primaryBitstreamRest = converter.toRest(bundle.getPrimaryBitstream(), projection);
+            bundleRest.setPrimaryBitstream(primaryBitstreamRest);
+        }
+
+        return bundleRest;
+    }
+
+    @Override
+    protected BundleRest newInstance() {
+        return new BundleRest();
+    }
+
+    @Override
+    public Class<Bundle> getModelClass() {
+        return Bundle.class;
+    }
+}

dspace-server-webapp/src/main/java/org/dspace/app/rest/converter/ClaimedTaskConverter.java

@@ -8,6 +8,7 @@
 package org.dspace.app.rest.converter;
 
 import org.dspace.app.rest.model.ClaimedTaskRest;
+import org.dspace.app.rest.projection.Projection;
 import org.dspace.discovery.IndexableObject;
 import org.dspace.xmlworkflow.storedcomponents.ClaimedTask;
 import org.dspace.xmlworkflow.storedcomponents.XmlWorkflowItem;
@@ -22,30 +23,27 @@ import org.springframework.stereotype.Component;
  */
 @Component
 public class ClaimedTaskConverter
-    implements IndexableObjectConverter<ClaimedTask, org.dspace.app.rest.model.ClaimedTaskRest> {
+        implements IndexableObjectConverter<ClaimedTask, ClaimedTaskRest> {
 
     @Autowired
-    private WorkflowItemConverter workflowItemConverter;
-
-    @Autowired
-    private EPersonConverter epersonConverter;
+    private ConverterService converter;
 
     @Override
-    public ClaimedTaskRest fromModel(ClaimedTask obj) {
+    public ClaimedTaskRest convert(ClaimedTask obj, Projection projection) {
         ClaimedTaskRest taskRest = new ClaimedTaskRest();
-
+        taskRest.setProjection(projection);
         XmlWorkflowItem witem = obj.getWorkflowItem();
         taskRest.setId(obj.getID());
-        taskRest.setWorkflowitem(workflowItemConverter.convert(witem));
+        taskRest.setWorkflowitem(converter.toRest(witem, projection));
         taskRest.setAction(obj.getActionID());
         taskRest.setStep(obj.getStepID());
-        taskRest.setOwner(epersonConverter.convert(obj.getOwner()));
+        taskRest.setOwner(converter.toRest(obj.getOwner(), projection));
         return taskRest;
     }
 
     @Override
-    public ClaimedTask toModel(ClaimedTaskRest obj) {
-        return null;
+    public Class<ClaimedTask> getModelClass() {
+        return ClaimedTask.class;
     }
 
     @Override
@@ -53,4 +51,4 @@ public class ClaimedTaskConverter
         return object instanceof ClaimedTask;
     }
 
-}
+}

dspace-server-webapp/src/main/java/org/dspace/app/rest/converter/CollectionConverter.java

@@ -16,6 +16,7 @@ import javax.servlet.http.HttpServletRequest;
 import org.apache.logging.log4j.Logger;
 import org.dspace.app.rest.model.CollectionRest;
 import org.dspace.app.rest.model.ResourcePolicyRest;
+import org.dspace.app.rest.projection.Projection;
 import org.dspace.app.rest.utils.ContextUtil;
 import org.dspace.authorize.ResourcePolicy;
 import org.dspace.authorize.service.AuthorizeService;
@@ -44,35 +45,28 @@ public class CollectionConverter
     private static final Logger log = org.apache.logging.log4j.LogManager.getLogger(CollectionConverter.class);
 
     @Autowired
-    private BitstreamConverter bitstreamConverter;
+    private ConverterService converter;
     @Autowired
     private CollectionService collectionService;
     @Autowired
     private RequestService requestService;
     @Autowired
     private AuthorizeService authorizeService;
-    @Autowired
-    private ResourcePolicyConverter resourcePolicyConverter;
 
     @Override
-    public org.dspace.content.Collection toModel(org.dspace.app.rest.model.CollectionRest obj) {
-        return (org.dspace.content.Collection) super.toModel(obj);
-    }
-
-    @Override
-    public CollectionRest fromModel(org.dspace.content.Collection obj) {
-        CollectionRest col = (CollectionRest) super.fromModel(obj);
+    public CollectionRest convert(org.dspace.content.Collection obj, Projection projection) {
+        CollectionRest col = super.convert(obj, projection);
         Bitstream logo = obj.getLogo();
         if (logo != null) {
-            col.setLogo(bitstreamConverter.convert(logo));
+            col.setLogo(converter.toRest(logo, projection));
         }
 
-        col.setDefaultAccessConditions(getDefaultBitstreamPoliciesForCollection(obj.getID()));
+        col.setDefaultAccessConditions(getDefaultBitstreamPoliciesForCollection(obj.getID(), projection));
 
         return col;
     }
 
-    private List<ResourcePolicyRest> getDefaultBitstreamPoliciesForCollection(UUID uuid) {
+    private List<ResourcePolicyRest> getDefaultBitstreamPoliciesForCollection(UUID uuid, Projection projection) {
 
         Context context = null;
         Request currentRequest = requestService.getCurrentRequest();
@@ -95,7 +89,7 @@ public class CollectionConverter
         List<ResourcePolicyRest> results = new ArrayList<ResourcePolicyRest>();
 
         for (ResourcePolicy pp : defaultCollectionPolicies) {
-            ResourcePolicyRest accessCondition = resourcePolicyConverter.convert(pp);
+            ResourcePolicyRest accessCondition = converter.toRest(pp, projection);
             if (accessCondition != null) {
                 results.add(accessCondition);
             }
@@ -109,7 +103,7 @@ public class CollectionConverter
     }
 
     @Override
-    protected Class<org.dspace.content.Collection> getModelClass() {
+    public Class<org.dspace.content.Collection> getModelClass() {
         return org.dspace.content.Collection.class;
     }
 

dspace-server-webapp/src/main/java/org/dspace/app/rest/converter/CommunityConverter.java

@@ -12,6 +12,7 @@ import java.util.List;
 
 import org.dspace.app.rest.model.CollectionRest;
 import org.dspace.app.rest.model.CommunityRest;
+import org.dspace.app.rest.projection.Projection;
 import org.dspace.content.Bitstream;
 import org.dspace.content.Collection;
 import org.dspace.content.Community;
@@ -31,38 +32,29 @@ public class CommunityConverter
     implements IndexableObjectConverter<Community, CommunityRest> {
 
     @Autowired
-    private BitstreamConverter bitstreamConverter;
-
-    @Autowired
-    private CollectionConverter collectionConverter;
+    private ConverterService converter;
 
     @Override
-    public org.dspace.content.Community toModel(org.dspace.app.rest.model.CommunityRest obj) {
-        return (org.dspace.content.Community) super.toModel(obj);
-    }
-
-    @Override
-    public CommunityRest fromModel(org.dspace.content.Community obj) {
-        CommunityRest com = (CommunityRest) super.fromModel(obj);
+    public CommunityRest convert(org.dspace.content.Community obj, Projection projection) {
+        CommunityRest com = super.convert(obj, projection);
         Bitstream logo = obj.getLogo();
         if (logo != null) {
-            com.setLogo(bitstreamConverter.convert(logo));
+            com.setLogo(converter.toRest(logo, projection));
         }
         List<Collection> collections = obj.getCollections();
-        List<CollectionRest> collectionsRest = new ArrayList<CollectionRest>();
+        List<CollectionRest> collectionsRest = new ArrayList<>();
         if (collections != null) {
             for (Collection col : collections) {
-                CollectionRest colrest = collectionConverter.fromModel(col);
-                collectionsRest.add(colrest);
+                collectionsRest.add(converter.toRest(col, projection));
             }
         }
         com.setCollections(collectionsRest);
 
         List<Community> subCommunities = obj.getSubcommunities();
-        List<CommunityRest> communityRest = new ArrayList<CommunityRest>();
+        List<CommunityRest> communityRest = new ArrayList<>();
         if (subCommunities != null) {
             for (Community scom : subCommunities) {
-                CommunityRest scomrest = this.fromModel(scom);
+                CommunityRest scomrest = this.convert(scom, projection);
                 communityRest.add(scomrest);
             }
         }
@@ -77,7 +69,7 @@ public class CommunityConverter
     }
 
     @Override
-    protected Class<org.dspace.content.Community> getModelClass() {
+    public Class<org.dspace.content.Community> getModelClass() {
         return org.dspace.content.Community.class;
     }
 

dspace-server-webapp/src/main/java/org/dspace/app/rest/converter/ConverterService.java

@@ -0,0 +1,303 @@
+/**
+ * The contents of this file are subject to the license and copyright
+ * detailed in the LICENSE and NOTICE files at the root of the source
+ * tree and available online at
+ *
+ * http://www.dspace.org/license/
+ */
+package org.dspace.app.rest.converter;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import javax.annotation.Nullable;
+import javax.annotation.PostConstruct;
+
+import org.apache.log4j.Logger;
+import org.dspace.app.rest.link.HalLinkFactory;
+import org.dspace.app.rest.link.HalLinkService;
+import org.dspace.app.rest.model.RestAddressableModel;
+import org.dspace.app.rest.model.RestModel;
+import org.dspace.app.rest.model.hateoas.HALResource;
+import org.dspace.app.rest.projection.DefaultProjection;
+import org.dspace.app.rest.projection.Projection;
+import org.dspace.app.rest.utils.Utils;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.config.BeanDefinition;
+import org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider;
+import org.springframework.core.type.filter.AssignableTypeFilter;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.PageImpl;
+import org.springframework.data.domain.Pageable;
+import org.springframework.hateoas.Resource;
+import org.springframework.stereotype.Component;
+import org.springframework.stereotype.Service;
+
+/**
+ * Converts domain objects from the DSpace service layer to rest objects, and from rest objects to resource
+ * objects, applying {@link Projection}s where applicable.
+ */
+@Service
+public class ConverterService {
+
+    private static final Logger log = Logger.getLogger(ConverterService.class);
+
+    private final Map<String, Projection> projectionMap = new HashMap<>();
+
+    private final Map<Class, DSpaceConverter> converterMap = new HashMap<>();
+
+    private final Map<Class<? extends RestModel>, Constructor> resourceConstructors = new HashMap<>();
+
+    @Autowired
+    private Utils utils;
+
+    @Autowired
+    private HalLinkService halLinkService;
+
+    @Autowired
+    private List<DSpaceConverter> converters;
+
+    @Autowired
+    private List<Projection> projections;
+
+    /**
+     * Converts the given model object to a rest object, using the appropriate {@link DSpaceConverter} and
+     * the given projection.
+     * <p>
+     * The projection's {@link Projection#transformModel(Object)} method will be automatically applied
+     * before conversion. If the rest object is a {@link RestModel}, the projection's
+     * {@link Projection#transformRest(RestModel)} method will be automatically called after conversion.
+     * </p>
+     *
+     * @param modelObject the model object, which may be a JPA entity any other class for which a converter exists.
+     * @param projection the projection to use.
+     * @param <M> the type of model object. A converter {@link Component} must exist that takes this as input.
+     * @param <R> the inferred return type.
+     * @return the converted object. If it's a {@link RestAddressableModel}, its
+     *         {@link RestAddressableModel#getProjection()} will be set to the given projection.
+     * @throws IllegalArgumentException if there is no compatible converter.
+     * @throws ClassCastException if the converter's return type is not compatible with the inferred return type.
+     */
+    public <M, R> R toRest(M modelObject, Projection projection) {
+        M transformedModel = projection.transformModel(modelObject);
+        DSpaceConverter<M, R> converter = requireConverter(modelObject.getClass());
+        R restObject = converter.convert(transformedModel, projection);
+        if (restObject instanceof RestModel) {
+            return (R) projection.transformRest((RestModel) restObject);
+        }
+        return restObject;
+    }
+
+    /**
+     * Converts a list of model objects to a page of rest objects using the given {@link Projection}.
+     *
+     * @param modelObjects the list of model objects.
+     * @param pageable the pageable.
+     * @param total the total number of items.
+     * @param projection the projection to use.
+     * @param <M> the model object class.
+     * @param <R> the rest object class.
+     * @return the page.
+     * @throws IllegalArgumentException if there is no compatible converter.
+     * @throws ClassCastException if the converter's return type is not compatible with the inferred return type.
+     */
+    public <M, R> Page<R> toRestPage(List<M> modelObjects, Pageable pageable, long total, Projection projection) {
+        return new PageImpl<>(modelObjects, pageable, total).map((object) -> toRest(object, projection));
+    }
+
+    /**
+     * Converts a list of model objects to a page of rest objects using the given {@link Projection}.
+     *
+     * @param modelObjects the page of model objects.
+     * @param projection the projection to use.
+     * @param <M> the model object class.
+     * @param <R> the rest object class.
+     * @return the page.
+     * @throws IllegalArgumentException if there is no compatible converter.
+     * @throws ClassCastException if the converter's return type is not compatible with the inferred return type.
+     */
+    public <M, R> Page<R> toRestPage(Page<M> modelObjects, Projection projection) {
+        return modelObjects.map((object) -> toRest(object, projection));
+    }
+
+    /**
+     * Gets the converter supporting the given class as input.
+     *
+     * @param sourceClass the desired converter's input type.
+     * @param <M> the converter's input type.
+     * @param <R> the converter's output type.
+     * @return the converter.
+     * @throws IllegalArgumentException if there is no such converter.
+     */
+    <M, R> DSpaceConverter<M, R> getConverter(Class<M> sourceClass) {
+        return (DSpaceConverter<M, R>) requireConverter(sourceClass);
+    }
+
+    /**
+     * Converts the given rest object to a {@link HALResource} object.
+     * <p>
+     * If the rest object is a {@link RestAddressableModel}, the projection returned by
+     * {@link RestAddressableModel#getProjection()} will be used to determine which optional
+     * embeds and links will be added, and {@link Projection#transformResource(HALResource)}
+     * will be automatically called before returning the final, fully converted resource.
+     * </p><p>
+     * In all cases, the {@link HalLinkService} will be used immediately after the resource is constructed,
+     * to ensure all {@link HalLinkFactory}s have had a chance to add links as needed.
+     * </p>
+     *
+     * @param restObject the input rest object.
+     * @param <T> the return type, a subclass of {@link HALResource}.
+     * @return the fully converted resource, with all automatic links and embeds applied.
+     * @throws IllegalArgumentException if there is no compatible resource constructor.
+     * @throws ClassCastException if the resource type is not compatible with the inferred return type.
+     */
+    public <T extends HALResource> T toResource(RestModel restObject) {
+        T halResource = getResource(restObject);
+        if (restObject instanceof RestAddressableModel) {
+            utils.embedOrLinkClassLevelRels(halResource);
+            halLinkService.addLinks(halResource);
+            Projection projection = ((RestAddressableModel) restObject).getProjection();
+            return projection.transformResource(halResource);
+        } else {
+            halLinkService.addLinks(halResource);
+        }
+        return halResource;
+    }
+
+    /**
+     * Gets the projection with the given name, or the default (no-op) projection if null is given.
+     *
+     * @param projectionName the projection name, or {@code null}.
+     * @return the projection with the given name, or {@link DefaultProjection} if {@code null} is given.
+     * @throws IllegalArgumentException if a name is provided and such a projection cannot be found.
+     */
+    public Projection getProjection(@Nullable String projectionName) {
+        return projectionName == null ? Projection.DEFAULT : requireProjection(projectionName);
+    }
+
+    /**
+     * Creates and returns an instance of the appropriate {@link HALResource} subclass for the given rest object.
+     * <p>
+     * <b>Note:</b> Only two forms of constructor are supported for resources that can be created with this method:
+     * A one-argument constructor taking the wrapped {@link RestModel}, and a two-argument constructor also taking
+     * a {@link Utils} instance. If both are found in a candidate resource's constructor, the two-argument form
+     * will be used.
+     * </p>
+     *
+     * @param restObject the rest object to wrap.
+     * @param <T> the return type, a subclass of {@link HALResource}.
+     * @return a new resource instance of the appropriate type.
+     */
+    private <T extends HALResource> T getResource(RestModel restObject) {
+        Constructor constructor = resourceConstructors.get(restObject.getClass());
+        if (constructor == null) {
+            throw new IllegalArgumentException("No constructor found to get resource class from " + restObject);
+        }
+        try {
+            if (constructor.getParameterCount() == 2) {
+                return (T) constructor.newInstance(restObject, utils);
+            } else {
+                return (T) constructor.newInstance(restObject);
+            }
+        } catch (InvocationTargetException e) {
+            if (e.getTargetException() instanceof RuntimeException) {
+                throw (RuntimeException) e.getTargetException();
+            }
+            throw new RuntimeException(e);
+        } catch (InstantiationException | IllegalAccessException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    /**
+     * Gets the projection with the given name or throws an {@link IllegalArgumentException}.
+     *
+     * @param projectionName the projection name.
+     * @return the projection.
+     * @throws IllegalArgumentException if not found.
+     */
+    private Projection requireProjection(String projectionName) {
+        if (!projectionMap.containsKey(projectionName)) {
+            throw new IllegalArgumentException("No such projection: " + projectionName);
+        }
+        return projectionMap.get(projectionName);
+    }
+
+    /**
+     * Gets the converter that supports the given source/input class or throws an {@link IllegalArgumentException}.
+     *
+     * @param sourceClass the source/input class.
+     * @return the converter.
+     * @throws IllegalArgumentException if not found.
+     */
+    private DSpaceConverter requireConverter(Class sourceClass) {
+        if (converterMap.containsKey(sourceClass)) {
+            return converterMap.get(sourceClass);
+        }
+        for (Class converterSourceClass : converterMap.keySet()) {
+            if (converterSourceClass.isAssignableFrom(sourceClass)) {
+                return converterMap.get(converterSourceClass);
+            }
+        }
+        throw new IllegalArgumentException("No converter found to get rest class from " + sourceClass);
+    }
+
+    /**
+     * Populates maps of injected components and constructors to be used by this service's public methods.
+     */
+    @PostConstruct
+    private void initialize() {
+        // put all available projections in a map keyed by name
+        for (Projection projection : projections) {
+            projectionMap.put(projection.getName(), projection);
+        }
+        projectionMap.put(Projection.DEFAULT.getName(), Projection.DEFAULT);
+
+        // put all available converters in a map keyed by model (input) class
+        for (DSpaceConverter converter : converters) {
+            converterMap.put(converter.getModelClass(), converter);
+        }
+
+        // scan all resource classes and look for compatible rest classes (by naming convention),
+        // creating a map of resource constructors keyed by rest class, for later use.
+        ClassPathScanningCandidateComponentProvider provider = new ClassPathScanningCandidateComponentProvider(false);
+        provider.addIncludeFilter(new AssignableTypeFilter(Resource.class));
+        Set<BeanDefinition> beanDefinitions = provider.findCandidateComponents(
+                HALResource.class.getPackage().getName().replaceAll("\\.", "/"));
+        for (BeanDefinition beanDefinition : beanDefinitions) {
+            String resourceClassName = beanDefinition.getBeanClassName();
+            String resourceClassSimpleName = resourceClassName.substring(resourceClassName.lastIndexOf(".") + 1);
+            String restClassSimpleName = resourceClassSimpleName
+                    .replaceAll("ResourceWrapper$", "RestWrapper")
+                    .replaceAll("Resource$", "Rest");
+            String restClassName = RestModel.class.getPackage().getName() + "." + restClassSimpleName;
+            try {
+                Class<? extends RestModel> restClass =
+                        (Class<? extends RestModel>) Class.forName(restClassName);
+                Class<HALResource<? extends RestModel>> resourceClass =
+                        (Class<HALResource<? extends RestModel>>) Class.forName(resourceClassName);
+                Constructor compatibleConstructor = null;
+                for (Constructor constructor : resourceClass.getDeclaredConstructors()) {
+                    if (constructor.getParameterCount() == 2 && constructor.getParameterTypes()[1] == Utils.class) {
+                        compatibleConstructor = constructor;
+                        break; // found preferred constructor
+                    } else if (constructor.getParameterCount() == 1) {
+                        compatibleConstructor = constructor;
+                    }
+                }
+                if (compatibleConstructor != null) {
+                    resourceConstructors.put(restClass, compatibleConstructor);
+                } else {
+                    log.warn("Skipping registration of resource class " + resourceClassName
+                                    + "; compatible constructor not found");
+                }
+            } catch (ClassNotFoundException e) {
+                log.warn("Skipping registration of resource class " + resourceClassName
+                        + "; rest class not found: " + restClassName);
+            }
+        }
+    }
+}

dspace-server-webapp/src/main/java/org/dspace/app/rest/converter/DSpaceConverter.java

@@ -7,15 +7,11 @@
  */
 package org.dspace.app.rest.converter;
 
-import org.springframework.core.convert.converter.Converter;
+import org.dspace.app.rest.projection.Projection;
 
-public interface DSpaceConverter<M, R> extends Converter<M, R> {
-    @Override
-    public default R convert(M source) {
-        return fromModel(source);
-    }
+public interface DSpaceConverter<M, R> {
 
-    public abstract R fromModel(M obj);
+    R convert(M modelObject, Projection projection);
 
-    public abstract M toModel(R obj);
+    Class<M> getModelClass();
 }

dspace-server-webapp/src/main/java/org/dspace/app/rest/converter/DSpaceObjectConverter.java

@@ -7,6 +7,8 @@
  */
 package org.dspace.app.rest.converter;
 
+import org.dspace.app.rest.model.MetadataValueList;
+import org.dspace.app.rest.projection.Projection;
 import org.dspace.content.DSpaceObject;
 import org.springframework.beans.factory.annotation.Autowired;
 
@@ -21,32 +23,22 @@ import org.springframework.beans.factory.annotation.Autowired;
 public abstract class DSpaceObjectConverter<M extends DSpaceObject, R extends org.dspace.app.rest.model
     .DSpaceObjectRest> implements DSpaceConverter<M, R> {
 
-    @Autowired(required = true)
-    private MetadataConverter metadataConverter;
+    @Autowired
+    ConverterService converter;
 
     @Override
-    public R fromModel(M obj) {
+    public R convert(M obj, Projection projection) {
         R resource = newInstance();
+        resource.setProjection(projection);
         resource.setHandle(obj.getHandle());
         if (obj.getID() != null) {
             resource.setUuid(obj.getID().toString());
         }
         resource.setName(obj.getName());
-        resource.setMetadata(metadataConverter.convert(obj.getMetadata()));
+        MetadataValueList metadataValues = new MetadataValueList(obj.getMetadata());
+        resource.setMetadata(converter.toRest(metadataValues, projection));
         return resource;
     }
 
-    @Override
-    public M toModel(R obj) {
-        return null;
-    }
-
-    public boolean supportsModel(DSpaceObject object) {
-        return object != null && object.getClass().equals(getModelClass());
-    }
-
     protected abstract R newInstance();
-
-    protected abstract Class<M> getModelClass();
-
-}
+}

dspace-server-webapp/src/main/java/org/dspace/app/rest/converter/DSpaceRunnableParameterConverter.java

@@ -0,0 +1,39 @@
+/**
+ * The contents of this file are subject to the license and copyright
+ * detailed in the LICENSE and NOTICE files at the root of the source
+ * tree and available online at
+ *
+ * http://www.dspace.org/license/
+ */
+package org.dspace.app.rest.converter;
+
+import org.dspace.app.rest.model.ParameterValueRest;
+import org.dspace.app.rest.projection.Projection;
+import org.dspace.scripts.DSpaceCommandLineParameter;
+import org.springframework.stereotype.Component;
+
+/**
+ * This converter will convert an object of {@Link DSpaceCommandLineParameter} to an object
+ * of {@link ParameterValueRest}
+ */
+@Component
+public class DSpaceRunnableParameterConverter
+    implements DSpaceConverter<DSpaceCommandLineParameter, ParameterValueRest> {
+
+    @Override
+    public ParameterValueRest convert(DSpaceCommandLineParameter dSpaceCommandLineParameter, Projection projection) {
+        ParameterValueRest parameterValueRest = new ParameterValueRest();
+        parameterValueRest.setName(dSpaceCommandLineParameter.getName());
+        parameterValueRest.setValue(dSpaceCommandLineParameter.getValue());
+        return parameterValueRest;
+    }
+
+    @Override
+    public Class<DSpaceCommandLineParameter> getModelClass() {
+        return DSpaceCommandLineParameter.class;
+    }
+
+    public DSpaceCommandLineParameter toModel(ParameterValueRest parameterValueRest) {
+        return new DSpaceCommandLineParameter(parameterValueRest.getName(), parameterValueRest.getValue());
+    }
+}

dspace-server-webapp/src/main/java/org/dspace/app/rest/converter/DiscoverConfigurationConverter.java

@@ -12,6 +12,7 @@ import java.util.stream.Collectors;
 
 import org.apache.commons.collections4.CollectionUtils;
 import org.dspace.app.rest.model.SearchConfigurationRest;
+import org.dspace.app.rest.projection.Projection;
 import org.dspace.discovery.configuration.DiscoveryConfiguration;
 import org.dspace.discovery.configuration.DiscoverySearchFilter;
 import org.dspace.discovery.configuration.DiscoverySearchFilterFacet;
@@ -24,9 +25,13 @@ import org.springframework.stereotype.Component;
  * to the convert method.
  */
 @Component
-public class DiscoverConfigurationConverter {
-    public SearchConfigurationRest convert(DiscoveryConfiguration configuration) {
+public class DiscoverConfigurationConverter
+        implements DSpaceConverter<DiscoveryConfiguration, SearchConfigurationRest> {
+
+    @Override
+    public SearchConfigurationRest convert(DiscoveryConfiguration configuration, Projection projection) {
         SearchConfigurationRest searchConfigurationRest = new SearchConfigurationRest();
+        searchConfigurationRest.setProjection(projection);
         if (configuration != null) {
             addSearchFilters(searchConfigurationRest,
                              configuration.getSearchFilters(), configuration.getSidebarFacets());
@@ -36,6 +41,11 @@ public class DiscoverConfigurationConverter {
         return searchConfigurationRest;
     }
 
+    @Override
+    public Class<DiscoveryConfiguration> getModelClass() {
+        return DiscoveryConfiguration.class;
+    }
+
     private void setDefaultSortOption(DiscoveryConfiguration configuration,
                                       SearchConfigurationRest searchConfigurationRest) {
         String defaultSort = configuration.getSearchSortConfiguration().SCORE;

dspace-server-webapp/src/main/java/org/dspace/app/rest/converter/DiscoverFacetResultsConverter.java

@@ -15,6 +15,7 @@ import org.dspace.app.rest.model.SearchFacetEntryRest;
 import org.dspace.app.rest.model.SearchFacetValueRest;
 import org.dspace.app.rest.model.SearchResultsRest;
 import org.dspace.app.rest.parameter.SearchFilter;
+import org.dspace.app.rest.projection.Projection;
 import org.dspace.core.Context;
 import org.dspace.discovery.DiscoverResult;
 import org.dspace.discovery.configuration.DiscoveryConfiguration;
@@ -36,19 +37,20 @@ public class DiscoverFacetResultsConverter {
 
     public FacetResultsRest convert(Context context, String facetName, String prefix, String query, String dsoType,
                                     String dsoScope, List<SearchFilter> searchFilters, DiscoverResult searchResult,
-                                    DiscoveryConfiguration configuration, Pageable page) {
+                                    DiscoveryConfiguration configuration, Pageable page, Projection projection) {
         FacetResultsRest facetResultsRest = new FacetResultsRest();
+        facetResultsRest.setProjection(projection);
 
         setRequestInformation(context, facetName, prefix, query, dsoType, dsoScope, searchFilters, searchResult,
-                configuration, facetResultsRest, page);
+                configuration, facetResultsRest, page, projection);
 
-        addToFacetResultList(facetName, searchResult, facetResultsRest, configuration, page);
+        addToFacetResultList(facetName, searchResult, facetResultsRest, configuration, page, projection);
 
         return facetResultsRest;
     }
 
     private void addToFacetResultList(String facetName, DiscoverResult searchResult, FacetResultsRest facetResultsRest,
-                                      DiscoveryConfiguration configuration, Pageable page) {
+                                      DiscoveryConfiguration configuration, Pageable page, Projection projection) {
 
         DiscoverySearchFilterFacet field = configuration.getSidebarFacet(facetName);
         List<DiscoverResult.FacetResult> facetValues = searchResult.getFacetResult(field);
@@ -59,26 +61,27 @@ public class DiscoverFacetResultsConverter {
                 //We requested one facet value more as the page size. We must make sure to not return the extra value.
                 break;
             }
-            SearchFacetValueRest searchFacetValueRest = buildSearchFacetValueRestFromFacetResult(value);
+            SearchFacetValueRest searchFacetValueRest = buildSearchFacetValueRestFromFacetResult(value, projection);
             facetResultsRest.addToFacetResultList(searchFacetValueRest);
             valueCount++;
         }
     }
 
-    private SearchFacetValueRest buildSearchFacetValueRestFromFacetResult(DiscoverResult.FacetResult value) {
-        return facetValueConverter.convert(value);
+    private SearchFacetValueRest buildSearchFacetValueRestFromFacetResult(DiscoverResult.FacetResult value,
+                                                                          Projection projection) {
+        return facetValueConverter.convert(value, projection);
     }
 
     private void setRequestInformation(Context context, String facetName, String prefix, String query, String dsoType,
                                        String dsoScope, List<SearchFilter> searchFilters, DiscoverResult searchResult,
                                        DiscoveryConfiguration configuration, FacetResultsRest facetResultsRest,
-                                       Pageable page) {
+                                       Pageable page, Projection projection) {
         facetResultsRest.setQuery(query);
         facetResultsRest.setPrefix(prefix);
         facetResultsRest.setScope(dsoScope);
         facetResultsRest.setDsoType(dsoType);
 
-        facetResultsRest.setFacetEntry(convertFacetEntry(facetName, searchResult, configuration, page));
+        facetResultsRest.setFacetEntry(convertFacetEntry(facetName, searchResult, configuration, page, projection));
 
         facetResultsRest.setSort(SearchResultsRest.Sorting.fromPage(page));
 
@@ -91,10 +94,12 @@ public class DiscoverFacetResultsConverter {
     }
 
     private SearchFacetEntryRest convertFacetEntry(final String facetName, final DiscoverResult searchResult,
-                                                   final DiscoveryConfiguration configuration, final Pageable page) {
+                                                   final DiscoveryConfiguration configuration, final Pageable page,
+                                                   final Projection projection) {
         DiscoverySearchFilterFacet field = configuration.getSidebarFacet(facetName);
 
         SearchFacetEntryRest facetEntryRest = new SearchFacetEntryRest(facetName);
+        facetEntryRest.setProjection(projection);
         List<DiscoverResult.FacetResult> facetResults = searchResult.getFacetResult(field);
 
         if (!facetResults.isEmpty()) {

dspace-server-webapp/src/main/java/org/dspace/app/rest/converter/DiscoverFacetValueConverter.java

@@ -8,6 +8,7 @@
 package org.dspace.app.rest.converter;
 
 import org.dspace.app.rest.model.SearchFacetValueRest;
+import org.dspace.app.rest.projection.Projection;
 import org.dspace.discovery.DiscoverResult;
 import org.springframework.stereotype.Component;
 
@@ -17,8 +18,9 @@ import org.springframework.stereotype.Component;
 @Component
 public class DiscoverFacetValueConverter {
 
-    public SearchFacetValueRest convert(final DiscoverResult.FacetResult value) {
+    public SearchFacetValueRest convert(final DiscoverResult.FacetResult value, final Projection projection) {
         SearchFacetValueRest valueRest = new SearchFacetValueRest();
+        valueRest.setProjection(projection);
         valueRest.setLabel(value.getDisplayedValue());
         valueRest.setFilterValue(value.getAsFilterQuery());
         valueRest.setFilterType(value.getFilterType());

dspace-server-webapp/src/main/java/org/dspace/app/rest/converter/DiscoverFacetsConverter.java

@@ -16,6 +16,7 @@ import org.dspace.app.rest.model.SearchFacetEntryRest;
 import org.dspace.app.rest.model.SearchFacetValueRest;
 import org.dspace.app.rest.model.SearchResultsRest;
 import org.dspace.app.rest.parameter.SearchFilter;
+import org.dspace.app.rest.projection.Projection;
 import org.dspace.core.Context;
 import org.dspace.discovery.DiscoverQuery;
 import org.dspace.discovery.DiscoverResult;
@@ -39,13 +40,15 @@ public class DiscoverFacetsConverter {
 
     public SearchResultsRest convert(Context context, String query, String dsoType, String configurationName,
                                      String dsoScope, List<SearchFilter> searchFilters, final Pageable page,
-                                     DiscoveryConfiguration configuration, DiscoverResult searchResult) {
+                                     DiscoveryConfiguration configuration, DiscoverResult searchResult,
+                                     Projection projection) {
 
         SearchResultsRest searchResultsRest = new SearchResultsRest();
+        searchResultsRest.setProjection(projection);
 
         setRequestInformation(context, query, dsoType, configurationName, dsoScope, searchFilters, page,
                               searchResultsRest);
-        addFacetValues(context, searchResult, searchResultsRest, configuration);
+        addFacetValues(context, searchResult, searchResultsRest, configuration, projection);
 
         return searchResultsRest;
     }
@@ -64,13 +67,14 @@ public class DiscoverFacetsConverter {
      *            The DiscoveryConfiguration applied to the query
      */
     public void addFacetValues(Context context, final DiscoverResult searchResult, final SearchResultsRest resultsRest,
-            final DiscoveryConfiguration configuration) {
+            final DiscoveryConfiguration configuration, final Projection projection) {
 
         List<DiscoverySearchFilterFacet> facets = configuration.getSidebarFacets();
         for (DiscoverySearchFilterFacet field : CollectionUtils.emptyIfNull(facets)) {
             List<DiscoverResult.FacetResult> facetValues = searchResult.getFacetResult(field);
 
             SearchFacetEntryRest facetEntry = new SearchFacetEntryRest(field.getIndexFieldName());
+            facetEntry.setProjection(projection);
             int valueCount = 0;
             facetEntry.setHasMore(false);
             facetEntry.setFacetLimit(field.getFacetLimit());
@@ -84,7 +88,7 @@ public class DiscoverFacetsConverter {
                 // are
                 // more results available.
                 if (valueCount < field.getFacetLimit()) {
-                    SearchFacetValueRest valueRest = facetValueConverter.convert(value);
+                    SearchFacetValueRest valueRest = facetValueConverter.convert(value, projection);
 
                     facetEntry.addValue(valueRest);
                 } else {

dspace-server-webapp/src/main/java/org/dspace/app/rest/converter/DiscoverResultConverter.java

@@ -18,6 +18,7 @@ import org.dspace.app.rest.model.RestAddressableModel;
 import org.dspace.app.rest.model.SearchResultEntryRest;
 import org.dspace.app.rest.model.SearchResultsRest;
 import org.dspace.app.rest.parameter.SearchFilter;
+import org.dspace.app.rest.projection.Projection;
 import org.dspace.core.Context;
 import org.dspace.discovery.DiscoverResult;
 import org.dspace.discovery.IndexableObject;
@@ -45,15 +46,17 @@ public class DiscoverResultConverter {
     public SearchResultsRest convert(final Context context, final String query, final String dsoType,
                                      final String configurationName, final String scope,
                                      final List<SearchFilter> searchFilters, final Pageable page,
-                                     final DiscoverResult searchResult, final DiscoveryConfiguration configuration) {
+                                     final DiscoverResult searchResult, final DiscoveryConfiguration configuration,
+                                     final Projection projection) {
 
         SearchResultsRest resultsRest = new SearchResultsRest();
+        resultsRest.setProjection(projection);
 
         setRequestInformation(context, query, dsoType, configurationName, scope, searchFilters, page, resultsRest);
 
-        addSearchResults(searchResult, resultsRest);
+        addSearchResults(searchResult, resultsRest, projection);
 
-        addFacetValues(context, searchResult, resultsRest, configuration);
+        addFacetValues(context, searchResult, resultsRest, configuration, projection);
 
         resultsRest.setTotalNumberOfResults(searchResult.getTotalSearchResults());
 
@@ -61,16 +64,18 @@ public class DiscoverResultConverter {
     }
 
     private void addFacetValues(Context context, final DiscoverResult searchResult, final SearchResultsRest resultsRest,
-            final DiscoveryConfiguration configuration) {
-        facetConverter.addFacetValues(context, searchResult, resultsRest, configuration);
+            final DiscoveryConfiguration configuration, final Projection projection) {
+        facetConverter.addFacetValues(context, searchResult, resultsRest, configuration, projection);
     }
 
-    private void addSearchResults(final DiscoverResult searchResult, final SearchResultsRest resultsRest) {
+    private void addSearchResults(final DiscoverResult searchResult, final SearchResultsRest resultsRest,
+                                  final Projection projection) {
         for (IndexableObject dspaceObject : CollectionUtils.emptyIfNull(searchResult.getIndexableObjects())) {
             SearchResultEntryRest resultEntry = new SearchResultEntryRest();
+            resultEntry.setProjection(projection);
 
             //Convert the DSpace Object to its REST model
-            resultEntry.setIndexableObject(convertDSpaceObject(dspaceObject));
+            resultEntry.setIndexableObject(convertDSpaceObject(dspaceObject, projection));
 
             //Add hit highlighting for this DSO if present
             DiscoverResult.IndexableObjectHighlightResult highlightedResults = searchResult
@@ -86,10 +91,10 @@ public class DiscoverResultConverter {
         }
     }
 
-    private RestAddressableModel convertDSpaceObject(final IndexableObject dspaceObject) {
+    private RestAddressableModel convertDSpaceObject(final IndexableObject dspaceObject, final Projection projection) {
         for (IndexableObjectConverter<IndexableObject, RestAddressableModel> converter : converters) {
             if (converter.supportsModel(dspaceObject)) {
-                return converter.convert(dspaceObject);
+                return converter.convert(dspaceObject, projection);
             }
         }
         return null;

dspace-server-webapp/src/main/java/org/dspace/app/rest/converter/EPersonConverter.java

@@ -14,6 +14,7 @@ import java.util.List;
 import org.apache.logging.log4j.Logger;
 import org.dspace.app.rest.model.EPersonRest;
 import org.dspace.app.rest.model.GroupRest;
+import org.dspace.app.rest.projection.Projection;
 import org.dspace.core.Context;
 import org.dspace.eperson.EPerson;
 import org.dspace.eperson.Group;
@@ -30,17 +31,17 @@ import org.springframework.stereotype.Component;
 @Component
 public class EPersonConverter extends DSpaceObjectConverter<EPerson, org.dspace.app.rest.model.EPersonRest> {
 
-    @Autowired(required = true)
-    private GroupConverter epersonGroupConverter;
+    @Autowired
+    private ConverterService converter;
 
-    @Autowired(required = true)
+    @Autowired
     private GroupService groupService;
 
     private static final Logger log = org.apache.logging.log4j.LogManager.getLogger(EPersonConverter.class);
 
     @Override
-    public EPersonRest fromModel(EPerson obj) {
-        EPersonRest eperson = super.fromModel(obj);
+    public EPersonRest convert(EPerson obj, Projection projection) {
+        EPersonRest eperson = super.convert(obj, projection);
         eperson.setLastActive(obj.getLastActive());
         eperson.setNetid(obj.getNetid());
         eperson.setCanLogIn(obj.canLogIn());
@@ -51,31 +52,26 @@ public class EPersonConverter extends DSpaceObjectConverter<EPerson, org.dspace.
         return eperson;
     }
 
-    public EPersonRest fromModelWithGroups(Context context, EPerson ePerson) throws SQLException {
-        EPersonRest eperson = fromModel(ePerson);
+    public EPersonRest fromModelWithGroups(Context context, EPerson ePerson, Projection projection)
+            throws SQLException {
+        EPersonRest eperson = convert(ePerson, projection);
 
-        List<GroupRest> groups = new ArrayList<GroupRest>();
+        List<GroupRest> groups = new ArrayList<>();
         for (Group g : groupService.allMemberGroups(context, ePerson)) {
-            groups.add(epersonGroupConverter.convert(g));
+            groups.add(converter.toRest(g, projection));
         }
 
         eperson.setGroups(groups);
         return eperson;
     }
 
-    @Override
-    public EPerson toModel(EPersonRest obj) {
-        // TODO Auto-generated method stub
-        return null;
-    }
-
     @Override
     protected EPersonRest newInstance() {
         return new EPersonRest();
     }
 
     @Override
-    protected Class<EPerson> getModelClass() {
+    public Class<EPerson> getModelClass() {
         return EPerson.class;
     }
 

dspace-server-webapp/src/main/java/org/dspace/app/rest/converter/EntityTypeConverter.java

@@ -8,6 +8,7 @@
 package org.dspace.app.rest.converter;
 
 import org.dspace.app.rest.model.EntityTypeRest;
+import org.dspace.app.rest.projection.Projection;
 import org.dspace.content.EntityType;
 import org.springframework.stereotype.Component;
 
@@ -18,29 +19,17 @@ import org.springframework.stereotype.Component;
 @Component
 public class EntityTypeConverter implements DSpaceConverter<org.dspace.content.EntityType, EntityTypeRest> {
 
-    /**
-     * This method converts the EntityType model object that is passed along in the params to the
-     * REST representation of this object
-     * @param obj   The EntityType model object to be converted
-     * @return      The EntityType REST object that is made from the model object
-     */
-    public EntityTypeRest fromModel(EntityType obj) {
+    @Override
+    public EntityTypeRest convert(EntityType obj, Projection projection) {
         EntityTypeRest entityTypeRest = new EntityTypeRest();
+        entityTypeRest.setProjection(projection);
         entityTypeRest.setId(obj.getID());
         entityTypeRest.setLabel(obj.getLabel());
         return entityTypeRest;
     }
 
-    /**
-     * This method converts the EntityType REST object that is passed along in the params to the model
-     * representation of this object
-     * @param obj   The EntityType REST object to be converted
-     * @return      The EntityType model object that is made from the REST object
-     */
-    public EntityType toModel(EntityTypeRest obj) {
-        EntityType entityType = new EntityType();
-        entityType.setId(obj.getId());
-        entityType.setLabel(obj.getLabel());
-        return entityType;
+    @Override
+    public Class<EntityType> getModelClass() {
+        return EntityType.class;
     }
 }

dspace-server-webapp/src/main/java/org/dspace/app/rest/converter/GenericDSpaceObjectConverter.java

@@ -1,61 +0,0 @@
-/**
- * The contents of this file are subject to the license and copyright
- * detailed in the LICENSE and NOTICE files at the root of the source
- * tree and available online at
- *
- * http://www.dspace.org/license/
- */
-package org.dspace.app.rest.converter;
-
-import java.util.List;
-
-import org.apache.log4j.Logger;
-import org.dspace.app.rest.model.DSpaceObjectRest;
-import org.dspace.content.DSpaceObject;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.stereotype.Component;
-
-/**
- * This is the converter from/to an unknown DSpaceObject in the DSpace API data model and the
- * REST data model
- *
- * @author Andrea Bollini (andrea.bollini at 4science.it)
- */
-@Component
-public class GenericDSpaceObjectConverter
-        extends DSpaceObjectConverter<org.dspace.content.DSpaceObject, org.dspace.app.rest.model.DSpaceObjectRest> {
-
-    @Autowired
-    private List<DSpaceObjectConverter> converters;
-
-    private static final Logger log = Logger.getLogger(GenericDSpaceObjectConverter.class);
-
-    /**
-     * Convert a DSpaceObject in its REST representation using a suitable converter
-     */
-    @Override
-    public DSpaceObjectRest fromModel(org.dspace.content.DSpaceObject dspaceObject) {
-        for (DSpaceObjectConverter converter : converters) {
-            if (converter.supportsModel(dspaceObject)) {
-                return converter.fromModel(dspaceObject);
-            }
-        }
-        return null;
-    }
-
-    @Override
-    public org.dspace.content.DSpaceObject toModel(DSpaceObjectRest obj) {
-        return null;
-    }
-
-    @Override
-    protected DSpaceObjectRest newInstance() {
-        return null;
-    }
-
-    @Override
-    protected Class<DSpaceObject> getModelClass() {
-        return DSpaceObject.class;
-    }
-
-}

dspace-server-webapp/src/main/java/org/dspace/app/rest/converter/GroupConverter.java

@@ -12,6 +12,7 @@ import java.util.List;
 
 import org.apache.logging.log4j.Logger;
 import org.dspace.app.rest.model.GroupRest;
+import org.dspace.app.rest.projection.Projection;
 import org.dspace.eperson.Group;
 import org.springframework.stereotype.Component;
 
@@ -27,31 +28,25 @@ public class GroupConverter extends DSpaceObjectConverter<Group, org.dspace.app.
     private static final Logger log = org.apache.logging.log4j.LogManager.getLogger(GroupConverter.class);
 
     @Override
-    public GroupRest fromModel(Group obj) {
-        GroupRest epersongroup = super.fromModel(obj);
+    public GroupRest convert(Group obj, Projection projection) {
+        GroupRest epersongroup = super.convert(obj, projection);
         epersongroup.setPermanent(obj.isPermanent());
         List<GroupRest> groups = new ArrayList<GroupRest>();
         for (Group g : obj.getMemberGroups()) {
-            groups.add(convert(g));
+            groups.add(convert(g, projection));
         }
         epersongroup.setGroups(groups);
 
         return epersongroup;
     }
 
-    @Override
-    public Group toModel(GroupRest obj) {
-        // TODO Auto-generated method stub
-        return null;
-    }
-
     @Override
     protected GroupRest newInstance() {
         return new GroupRest();
     }
 
     @Override
-    protected Class<Group> getModelClass() {
+    public Class<Group> getModelClass() {
         return Group.class;
     }
 

dspace-server-webapp/src/main/java/org/dspace/app/rest/converter/HarvestedCollectionConverter.java

@@ -14,11 +14,11 @@ import org.dspace.app.rest.model.HarvestStatusEnum;
 import org.dspace.app.rest.model.HarvestTypeEnum;
 import org.dspace.app.rest.model.HarvestedCollectionRest;
 import org.dspace.app.rest.model.HarvesterMetadataRest;
+import org.dspace.app.rest.projection.Projection;
 import org.dspace.content.Collection;
 import org.dspace.harvest.HarvestedCollection;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;
-import sun.reflect.generics.reflectiveObjects.NotImplementedException;
 
 /**
  * This is the converter from/to the HarvestedCollection in the DSpace API data model and the REST data model
@@ -29,18 +29,19 @@ import sun.reflect.generics.reflectiveObjects.NotImplementedException;
 public class HarvestedCollectionConverter implements DSpaceConverter<HarvestedCollection, HarvestedCollectionRest> {
 
     @Autowired
-    private CollectionConverter collectionConverter;
+    private ConverterService converter;
 
     @Override
-    public HarvestedCollectionRest fromModel(HarvestedCollection obj) {
+    public HarvestedCollectionRest convert(HarvestedCollection obj, Projection projection) {
         HarvestedCollectionRest harvestedCollectionRest = new HarvestedCollectionRest();
+        harvestedCollectionRest.setProjection(projection);
 
         if (obj != null) {
             HarvestTypeEnum harvestTypeEnum = HarvestTypeEnum.fromInt(obj.getHarvestType());
             HarvestStatusEnum harvestStatusEnum = HarvestStatusEnum.fromInt(obj.getHarvestStatus());
 
             harvestedCollectionRest.setId(obj.getID());
-            harvestedCollectionRest.setCollection(collectionConverter.fromModel(obj.getCollection()));
+            harvestedCollectionRest.setCollection(converter.toRest(obj.getCollection(), projection));
             harvestedCollectionRest.setHarvestType(harvestTypeEnum);
             harvestedCollectionRest.setHarvestStatus(harvestStatusEnum);
             harvestedCollectionRest.setMetadataConfigId(obj.getHarvestMetadataConfig());
@@ -59,24 +60,25 @@ public class HarvestedCollectionConverter implements DSpaceConverter<HarvestedCo
 
     public HarvestedCollectionRest fromModel(HarvestedCollection obj,
                                              Collection collection,
-                                             List<Map<String,String>> metadata_configs) {
-        HarvestedCollectionRest harvestedCollectionRest = this.fromModel(obj);
+                                             List<Map<String,String>> metadata_configs,
+                                             Projection projection) {
+        HarvestedCollectionRest harvestedCollectionRest = this.convert(obj, projection);
 
         // Add collectionRest to the empty HarvestedCollectionRest so that we can use its uuid later in the linkFactory
         if (obj == null) {
-            harvestedCollectionRest.setCollection(collectionConverter.fromModel(collection));
+            harvestedCollectionRest.setCollection(converter.toRest(collection, projection));
         }
 
         HarvesterMetadataRest harvesterMetadataRest = new HarvesterMetadataRest();
+        harvesterMetadataRest.setProjection(projection);
         harvesterMetadataRest.setConfigs(metadata_configs);
-
         harvestedCollectionRest.setMetadataConfigs(harvesterMetadataRest);
 
         return harvestedCollectionRest;
     }
 
     @Override
-    public HarvestedCollection toModel(HarvestedCollectionRest obj) {
-        throw new NotImplementedException();
+    public Class<HarvestedCollection> getModelClass() {
+        return HarvestedCollection.class;
     }
 }

dspace-server-webapp/src/main/java/org/dspace/app/rest/converter/IndexableObjectConverter.java

@@ -26,6 +26,5 @@ public interface IndexableObjectConverter<M extends IndexableObject,
      *            the IndexableObject to check
      * @return true if the actual converter implementation is able to manage the supplied IndexableObject
      */
-    public boolean supportsModel(IndexableObject idxo);
-
-}
+    boolean supportsModel(IndexableObject idxo);
+}

dspace-server-webapp/src/main/java/org/dspace/app/rest/converter/ItemConverter.java

@@ -7,29 +7,19 @@
  */
 package org.dspace.app.rest.converter;
 
-import java.sql.SQLException;
-import java.util.ArrayList;
-import java.util.LinkedList;
 import java.util.List;
-import javax.servlet.http.HttpServletRequest;
+import java.util.stream.Collectors;
 
 import org.apache.logging.log4j.Logger;
-import org.dspace.app.rest.model.BitstreamRest;
+import org.dspace.app.rest.model.BundleRest;
 import org.dspace.app.rest.model.ItemRest;
-import org.dspace.app.rest.model.RelationshipRest;
-import org.dspace.app.rest.utils.ContextUtil;
-import org.dspace.content.Bitstream;
-import org.dspace.content.Bundle;
+import org.dspace.app.rest.model.MetadataValueList;
+import org.dspace.app.rest.projection.Projection;
 import org.dspace.content.Collection;
 import org.dspace.content.Item;
 import org.dspace.content.MetadataValue;
-import org.dspace.content.Relationship;
 import org.dspace.content.service.ItemService;
-import org.dspace.content.service.RelationshipService;
-import org.dspace.core.Context;
 import org.dspace.discovery.IndexableObject;
-import org.dspace.services.RequestService;
-import org.dspace.services.model.Request;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;
 
@@ -41,100 +31,52 @@ import org.springframework.stereotype.Component;
  */
 @Component
 public class ItemConverter
-    extends DSpaceObjectConverter<org.dspace.content.Item, org.dspace.app.rest.model.ItemRest>
+    extends DSpaceObjectConverter<Item, ItemRest>
     implements IndexableObjectConverter<Item, ItemRest> {
 
-    @Autowired(required = true)
-    private CollectionConverter collectionConverter;
-    @Autowired(required = true)
-    private BitstreamConverter bitstreamConverter;
     @Autowired
-    private RequestService requestService;
-    @Autowired
-    private RelationshipService relationshipService;
-    @Autowired
-    private RelationshipConverter relationshipConverter;
+    private ConverterService converter;
+
     @Autowired
     private ItemService itemService;
-    @Autowired
-    private MetadataConverter metadataConverter;
 
     private static final Logger log = org.apache.logging.log4j.LogManager.getLogger(ItemConverter.class);
 
     @Override
-    public ItemRest fromModel(org.dspace.content.Item obj) {
-        ItemRest item = super.fromModel(obj);
+    public ItemRest convert(Item obj, Projection projection) {
+        ItemRest item = super.convert(obj, projection);
         item.setInArchive(obj.isArchived());
         item.setDiscoverable(obj.isDiscoverable());
         item.setWithdrawn(obj.isWithdrawn());
         item.setLastModified(obj.getLastModified());
-        try {
-            Collection c = obj.getOwningCollection();
-            if (c != null) {
-                item.setOwningCollection(collectionConverter.fromModel(c));
-            }
-        } catch (Exception e) {
-            log.error("Error setting owning collection for item" + item.getHandle(), e);
+        Collection owningCollection = obj.getOwningCollection();
+        if (owningCollection != null) {
+            item.setOwningCollection(converter.toRest(owningCollection, projection));
         }
-        try {
-            Collection c = obj.getTemplateItemOf();
-            if (c != null) {
-                item.setTemplateItemOf(collectionConverter.fromModel(c));
-            }
-        } catch (Exception e) {
-            log.error("Error setting template item of for item " + item.getHandle(), e);
+        Collection templateItemOf = obj.getTemplateItemOf();
+        if (templateItemOf != null) {
+            item.setTemplateItemOf(converter.toRest(templateItemOf, projection));
         }
-        List<BitstreamRest> bitstreams = new ArrayList<BitstreamRest>();
-        for (Bundle bun : obj.getBundles()) {
-            for (Bitstream bit : bun.getBitstreams()) {
-                BitstreamRest bitrest = bitstreamConverter.fromModel(bit);
-                bitstreams.add(bitrest);
-            }
-        }
-        item.setBitstreams(bitstreams);
-        List<Relationship> relationships = new LinkedList<>();
-        try {
-            Context context;
-            Request currentRequest = requestService.getCurrentRequest();
-            if (currentRequest != null) {
-                HttpServletRequest request = currentRequest.getHttpServletRequest();
-                context = ContextUtil.obtainContext(request);
-            } else {
-                context = new Context();
-            }
-            relationships = relationshipService.findByItem(context, obj);
-        } catch (SQLException e) {
-            log.error("Error retrieving relationships for item " + item.getHandle(), e);
-        }
-        List<RelationshipRest> relationshipRestList = new LinkedList<>();
-        for (Relationship relationship : relationships) {
-            RelationshipRest relationshipRest = relationshipConverter.fromModel(relationship);
-            relationshipRestList.add(relationshipRest);
-        }
-        item.setRelationships(relationshipRestList);
 
-        List<MetadataValue> fullList = new LinkedList<>();
-        fullList = itemService.getMetadata(obj, Item.ANY, Item.ANY, Item.ANY, Item.ANY, true);
-
-        item.setMetadata(metadataConverter.convert(fullList));
+        item.setBundles(obj.getBundles()
+                            .stream()
+                            .map(x -> (BundleRest) converter.toRest(x, projection))
+                            .collect(Collectors.toList()));
 
+        List<MetadataValue> fullList = itemService.getMetadata(obj, Item.ANY, Item.ANY, Item.ANY, Item.ANY, true);
+        MetadataValueList metadataValues = new MetadataValueList(fullList);
+        item.setMetadata(converter.toRest(metadataValues, projection));
 
         return item;
     }
 
-    @Override
-    public org.dspace.content.Item toModel(ItemRest obj) {
-        // TODO Auto-generated method stub
-        return null;
-    }
-
     @Override
     protected ItemRest newInstance() {
         return new ItemRest();
     }
 
     @Override
-    protected Class<Item> getModelClass() {
+    public Class<Item> getModelClass() {
         return Item.class;
     }
 

dspace-server-webapp/src/main/java/org/dspace/app/rest/converter/MetadataConverter.java

@@ -17,7 +17,9 @@ import java.util.TreeSet;
 import java.util.stream.Collectors;
 
 import org.dspace.app.rest.model.MetadataRest;
+import org.dspace.app.rest.model.MetadataValueList;
 import org.dspace.app.rest.model.MetadataValueRest;
+import org.dspace.app.rest.projection.Projection;
 import org.dspace.authorize.AuthorizeException;
 import org.dspace.content.DSpaceObject;
 import org.dspace.content.Item;
@@ -26,39 +28,33 @@ import org.dspace.content.factory.ContentServiceFactory;
 import org.dspace.content.service.DSpaceObjectService;
 import org.dspace.core.Context;
 import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.core.convert.converter.Converter;
 import org.springframework.stereotype.Component;
 
 /**
  * Converter to translate between lists of domain {@link MetadataValue}s and {@link MetadataRest} representations.
  */
 @Component
-public class MetadataConverter implements Converter<List<MetadataValue>, MetadataRest> {
+public class MetadataConverter implements DSpaceConverter<MetadataValueList, MetadataRest> {
 
     @Autowired
     private ContentServiceFactory contentServiceFactory;
 
     @Autowired
-    private MetadataValueConverter valueConverter;
+    private ConverterService converter;
 
-    /**
-     * Gets a rest representation of the given list of domain metadata values.
-     *
-     * @param metadataValueList the domain values.
-     * @return the rest representation.
-     */
     @Override
-    public MetadataRest convert(List<MetadataValue> metadataValueList) {
+    public MetadataRest convert(MetadataValueList metadataValues,
+                                Projection projection) {
         // Convert each value to a DTO while retaining place order in a map of key -> SortedSet
         Map<String, SortedSet<MetadataValueRest>> mapOfSortedSets = new HashMap<>();
-        for (MetadataValue metadataValue : metadataValueList) {
+        for (MetadataValue metadataValue : metadataValues) {
             String key = metadataValue.getMetadataField().toString('.');
             SortedSet<MetadataValueRest> set = mapOfSortedSets.get(key);
             if (set == null) {
                 set = new TreeSet<>(Comparator.comparingInt(MetadataValueRest::getPlace));
                 mapOfSortedSets.put(key, set);
             }
-            set.add(valueConverter.convert(metadataValue));
+            set.add(converter.toRest(metadataValue, projection));
         }
 
         MetadataRest metadataRest = new MetadataRest();
@@ -72,6 +68,11 @@ public class MetadataConverter implements Converter<List<MetadataValue>, Metadat
         return metadataRest;
     }
 
+    @Override
+    public Class<MetadataValueList> getModelClass() {
+        return MetadataValueList.class;
+    }
+
     /**
      * Sets a DSpace object's domain metadata values from a rest representation.
      *

dspace-server-webapp/src/main/java/org/dspace/app/rest/converter/MetadataFieldConverter.java

@@ -8,6 +8,8 @@
 package org.dspace.app.rest.converter;
 
 import org.dspace.app.rest.model.MetadataFieldRest;
+import org.dspace.app.rest.projection.Projection;
+import org.dspace.content.MetadataField;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;
 
@@ -18,24 +20,24 @@ import org.springframework.stereotype.Component;
  * @author Andrea Bollini (andrea.bollini at 4science.it)
  */
 @Component
-public class MetadataFieldConverter implements DSpaceConverter<org.dspace.content.MetadataField, MetadataFieldRest> {
-    @Autowired(required = true)
-    private MetadataSchemaConverter metadataSchemaConverter;
+public class MetadataFieldConverter implements DSpaceConverter<MetadataField, MetadataFieldRest> {
+    @Autowired
+    private ConverterService converter;
 
     @Override
-    public MetadataFieldRest fromModel(org.dspace.content.MetadataField obj) {
+    public MetadataFieldRest convert(MetadataField obj, Projection projection) {
         MetadataFieldRest field = new MetadataFieldRest();
+        field.setProjection(projection);
         field.setId(obj.getID());
         field.setElement(obj.getElement());
         field.setQualifier(obj.getQualifier());
         field.setScopeNote(obj.getScopeNote());
-        field.setSchema(metadataSchemaConverter.convert(obj.getMetadataSchema()));
+        field.setSchema(converter.toRest(obj.getMetadataSchema(), projection));
         return field;
     }
 
     @Override
-    public org.dspace.content.MetadataField toModel(MetadataFieldRest obj) {
-        // TODO Auto-generated method stub
-        return null;
+    public Class<MetadataField> getModelClass() {
+        return MetadataField.class;
     }
-}
+}

dspace-server-webapp/src/main/java/org/dspace/app/rest/converter/MetadataSchemaConverter.java

@@ -8,6 +8,8 @@
 package org.dspace.app.rest.converter;
 
 import org.dspace.app.rest.model.MetadataSchemaRest;
+import org.dspace.app.rest.projection.Projection;
+import org.dspace.content.MetadataSchema;
 import org.springframework.stereotype.Component;
 
 /**
@@ -17,10 +19,11 @@ import org.springframework.stereotype.Component;
  * @author Andrea Bollini (andrea.bollini at 4science.it)
  */
 @Component
-public class MetadataSchemaConverter implements DSpaceConverter<org.dspace.content.MetadataSchema, MetadataSchemaRest> {
+public class MetadataSchemaConverter implements DSpaceConverter<MetadataSchema, MetadataSchemaRest> {
     @Override
-    public MetadataSchemaRest fromModel(org.dspace.content.MetadataSchema obj) {
+    public MetadataSchemaRest convert(MetadataSchema obj, Projection projection) {
         MetadataSchemaRest schema = new MetadataSchemaRest();
+        schema.setProjection(projection);
         schema.setId(obj.getID());
         schema.setNamespace(obj.getNamespace());
         schema.setPrefix(obj.getName());
@@ -28,8 +31,7 @@ public class MetadataSchemaConverter implements DSpaceConverter<org.dspace.conte
     }
 
     @Override
-    public org.dspace.content.MetadataSchema toModel(MetadataSchemaRest obj) {
-        // TODO Auto-generated method stub
-        return null;
+    public Class<MetadataSchema> getModelClass() {
+        return MetadataSchema.class;
     }
-}
+}

dspace-server-webapp/src/main/java/org/dspace/app/rest/converter/MetadataValueConverter.java

@@ -8,24 +8,18 @@
 package org.dspace.app.rest.converter;
 
 import org.dspace.app.rest.model.MetadataValueRest;
+import org.dspace.app.rest.projection.Projection;
 import org.dspace.content.MetadataValue;
-import org.springframework.core.convert.converter.Converter;
 import org.springframework.stereotype.Component;
 
 /**
  * Converter to translate between domain {@link MetadataValue}s and {@link MetadataValueRest} representations.
  */
 @Component
-public class MetadataValueConverter implements Converter<MetadataValue, MetadataValueRest> {
+public class MetadataValueConverter implements DSpaceConverter<MetadataValue, MetadataValueRest> {
 
-    /**
-     * Gets a rest representation of the given domain metadata value.
-     *
-     * @param metadataValue the domain value.
-     * @return the rest representation.
-     */
     @Override
-    public MetadataValueRest convert(MetadataValue metadataValue) {
+    public MetadataValueRest convert(MetadataValue metadataValue, Projection projection) {
         MetadataValueRest metadataValueRest = new MetadataValueRest();
         metadataValueRest.setValue(metadataValue.getValue());
         metadataValueRest.setLanguage(metadataValue.getLanguage());
@@ -34,4 +28,9 @@ public class MetadataValueConverter implements Converter<MetadataValue, Metadata
         metadataValueRest.setPlace(metadataValue.getPlace());
         return metadataValueRest;
     }
+
+    @Override
+    public Class<MetadataValue> getModelClass() {
+        return MetadataValue.class;
+    }
 }

dspace-server-webapp/src/main/java/org/dspace/app/rest/converter/PoolTaskConverter.java

@@ -8,6 +8,7 @@
 package org.dspace.app.rest.converter;
 
 import org.dspace.app.rest.model.PoolTaskRest;
+import org.dspace.app.rest.projection.Projection;
 import org.dspace.discovery.IndexableObject;
 import org.dspace.xmlworkflow.storedcomponents.PoolTask;
 import org.dspace.xmlworkflow.storedcomponents.XmlWorkflowItem;
@@ -25,26 +26,21 @@ public class PoolTaskConverter
     implements IndexableObjectConverter<PoolTask, org.dspace.app.rest.model.PoolTaskRest> {
 
     @Autowired
-    private WorkflowItemConverter workflowItemConverter;
-
-    @Autowired
-    private EPersonConverter epersonConverter;
-
-    @Autowired
-    private GroupConverter groupConverter;
+    private ConverterService converter;
 
     @Override
-    public PoolTaskRest fromModel(PoolTask obj) {
+    public PoolTaskRest convert(PoolTask obj, Projection projection) {
         PoolTaskRest taskRest = new PoolTaskRest();
+        taskRest.setProjection(projection);
 
         XmlWorkflowItem witem = obj.getWorkflowItem();
         taskRest.setId(obj.getID());
-        taskRest.setWorkflowitem(workflowItemConverter.convert(witem));
+        taskRest.setWorkflowitem(converter.toRest(witem, projection));
         if (obj.getEperson() != null) {
-            taskRest.setEperson(epersonConverter.convert(obj.getEperson()));
+            taskRest.setEperson(converter.toRest(obj.getEperson(), projection));
         }
         if (obj.getGroup() != null) {
-            taskRest.setGroup(groupConverter.convert(obj.getGroup()));
+            taskRest.setGroup(converter.toRest(obj.getGroup(), projection));
         }
         taskRest.setAction(obj.getActionID());
         taskRest.setStep(obj.getStepID());
@@ -52,8 +48,8 @@ public class PoolTaskConverter
     }
 
     @Override
-    public PoolTask toModel(PoolTaskRest obj) {
-        return null;
+    public Class<PoolTask> getModelClass() {
+        return PoolTask.class;
     }
 
     @Override
@@ -61,4 +57,4 @@ public class PoolTaskConverter
         return object instanceof PoolTask;
     }
 
-}
+}

dspace-server-webapp/src/main/java/org/dspace/app/rest/converter/ProcessConverter.java

@@ -0,0 +1,52 @@
+/**
+ * The contents of this file are subject to the license and copyright
+ * detailed in the LICENSE and NOTICE files at the root of the source
+ * tree and available online at
+ *
+ * http://www.dspace.org/license/
+ */
+package org.dspace.app.rest.converter;
+
+import java.util.stream.Collectors;
+
+import org.dspace.app.rest.model.ParameterValueRest;
+import org.dspace.app.rest.model.ProcessRest;
+import org.dspace.app.rest.projection.Projection;
+import org.dspace.scripts.Process;
+import org.dspace.scripts.service.ProcessService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+/**
+ * This converter will convert an object of {@Link Process} to an object of {@link ProcessRest}
+ */
+@Component
+public class ProcessConverter implements DSpaceConverter<Process, ProcessRest> {
+
+    @Autowired
+    private ConverterService converter;
+
+    @Autowired
+    private ProcessService processService;
+
+    @Override
+    public ProcessRest convert(Process process, Projection projection) {
+        ProcessRest processRest = new ProcessRest();
+        processRest.setProjection(projection);
+        processRest.setId(process.getID());
+        processRest.setScriptName(process.getName());
+        processRest.setProcessId(process.getID());
+        processRest.setUserId(process.getEPerson().getID());
+        processRest.setProcessStatus(process.getProcessStatus());
+        processRest.setStartTime(process.getStartTime());
+        processRest.setEndTime(process.getFinishedTime());
+        processRest.setParameterRestList(processService.getParameters(process).stream()
+                .map(x -> (ParameterValueRest) converter.toRest(x, projection)).collect(Collectors.toList()));
+        return processRest;
+    }
+
+    @Override
+    public Class<Process> getModelClass() {
+        return Process.class;
+    }
+}

dspace-server-webapp/src/main/java/org/dspace/app/rest/converter/RelationshipConverter.java

@@ -8,10 +8,10 @@
 package org.dspace.app.rest.converter;
 
 import org.dspace.app.rest.model.RelationshipRest;
+import org.dspace.app.rest.projection.Projection;
 import org.dspace.content.Relationship;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;
-import sun.reflect.generics.reflectiveObjects.NotImplementedException;
 
 /**
  * This converter is responsible for transforming the model representation of an Relationship to the REST
@@ -21,20 +21,15 @@ import sun.reflect.generics.reflectiveObjects.NotImplementedException;
 public class RelationshipConverter implements DSpaceConverter<Relationship, RelationshipRest> {
 
     @Autowired
-    private RelationshipTypeConverter relationshipTypeConverter;
+    private ConverterService converter;
 
-
-    /**
-     * This method converts the Relationship model object that is passed along in the params to the
-     * REST representation of this object
-     * @param obj   The Relationship model object to be converted
-     * @return      The Relationship REST object that is made from the model object
-     */
-    public RelationshipRest fromModel(Relationship obj) {
+    @Override
+    public RelationshipRest convert(Relationship obj, Projection projection) {
         RelationshipRest relationshipRest = new RelationshipRest();
+        relationshipRest.setProjection(projection);
         relationshipRest.setId(obj.getID());
         relationshipRest.setLeftId(obj.getLeftItem().getID());
-        relationshipRest.setRelationshipType(relationshipTypeConverter.fromModel(obj.getRelationshipType()));
+        relationshipRest.setRelationshipType(converter.toRest(obj.getRelationshipType(), projection));
         relationshipRest.setRightId(obj.getRightItem().getID());
         relationshipRest.setLeftPlace(obj.getLeftPlace());
         relationshipRest.setRightPlace(obj.getRightPlace());
@@ -43,13 +38,8 @@ public class RelationshipConverter implements DSpaceConverter<Relationship, Rela
         return relationshipRest;
     }
 
-    /**
-     * This method converts the Relationship REST object that is passed along in the params to the model
-     * representation of this object
-     * @param obj   The Relationship REST object to be converted
-     * @return      The Relationship model object that is made from the REST object
-     */
-    public Relationship toModel(RelationshipRest obj) {
-        throw new NotImplementedException();
+    @Override
+    public Class<Relationship> getModelClass() {
+        return Relationship.class;
     }
 }

dspace-server-webapp/src/main/java/org/dspace/app/rest/converter/RelationshipTypeConverter.java

@@ -8,6 +8,7 @@
 package org.dspace.app.rest.converter;
 
 import org.dspace.app.rest.model.RelationshipTypeRest;
+import org.dspace.app.rest.projection.Projection;
 import org.dspace.content.RelationshipType;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;
@@ -20,16 +21,12 @@ import org.springframework.stereotype.Component;
 public class RelationshipTypeConverter implements DSpaceConverter<RelationshipType, RelationshipTypeRest>  {
 
     @Autowired
-    private EntityTypeConverter entityTypeConverter;
+    private ConverterService converter;
 
-    /**
-     * This method converts the RelationshipType model object that is passed along in the params to the
-     * REST representation of this object
-     * @param obj   The RelationshipType model object to be converted
-     * @return      The RelationshipType REST object that is made from the model object
-     */
-    public RelationshipTypeRest fromModel(RelationshipType obj) {
+    @Override
+    public RelationshipTypeRest convert(RelationshipType obj, Projection projection) {
         RelationshipTypeRest relationshipTypeRest = new RelationshipTypeRest();
+        relationshipTypeRest.setProjection(projection);
 
         relationshipTypeRest.setId(obj.getID());
         relationshipTypeRest.setLeftwardType(obj.getLeftwardType());
@@ -38,20 +35,14 @@ public class RelationshipTypeConverter implements DSpaceConverter<RelationshipTy
         relationshipTypeRest.setLeftMaxCardinality(obj.getLeftMaxCardinality());
         relationshipTypeRest.setRightMinCardinality(obj.getRightMinCardinality());
         relationshipTypeRest.setRightMaxCardinality(obj.getRightMaxCardinality());
-        relationshipTypeRest.setLeftType(entityTypeConverter.fromModel(obj.getLeftType()));
-        relationshipTypeRest.setRightType(entityTypeConverter.fromModel(obj.getRightType()));
+        relationshipTypeRest.setLeftType(converter.toRest(obj.getLeftType(), projection));
+        relationshipTypeRest.setRightType(converter.toRest(obj.getRightType(), projection));
 
         return relationshipTypeRest;
     }
 
-    /**
-     * This method converts the RelationshipType REST object that is passed along in the params to the model
-     * representation of this object
-     * @param obj   The RelationshipType REST object to be converted
-     * @return      The RelationshipType model object that is made from the REST object
-     */
-    public RelationshipType toModel(RelationshipTypeRest obj) {
-
-        return null;
+    @Override
+    public Class<RelationshipType> getModelClass() {
+        return RelationshipType.class;
     }
 }

dspace-server-webapp/src/main/java/org/dspace/app/rest/converter/ResourcePolicyConverter.java

@@ -8,6 +8,7 @@
 package org.dspace.app.rest.converter;
 
 import org.dspace.app.rest.model.ResourcePolicyRest;
+import org.dspace.app.rest.projection.Projection;
 import org.dspace.authorize.ResourcePolicy;
 import org.dspace.authorize.service.ResourcePolicyService;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -26,9 +27,10 @@ public class ResourcePolicyConverter implements DSpaceConverter<ResourcePolicy,
     ResourcePolicyService resourcePolicyService;
 
     @Override
-    public ResourcePolicyRest fromModel(ResourcePolicy obj) {
+    public ResourcePolicyRest convert(ResourcePolicy obj, Projection projection) {
 
         ResourcePolicyRest model = new ResourcePolicyRest();
+        model.setProjection(projection);
 
         model.setId(obj.getID());
 
@@ -52,9 +54,8 @@ public class ResourcePolicyConverter implements DSpaceConverter<ResourcePolicy,
     }
 
     @Override
-    public ResourcePolicy toModel(ResourcePolicyRest obj) {
-        // TODO Auto-generated method stub
-        return null;
+    public Class<ResourcePolicy> getModelClass() {
+        return ResourcePolicy.class;
     }
 
 }

dspace-server-webapp/src/main/java/org/dspace/app/rest/converter/ScriptConverter.java

@@ -0,0 +1,53 @@
+/**
+ * The contents of this file are subject to the license and copyright
+ * detailed in the LICENSE and NOTICE files at the root of the source
+ * tree and available online at
+ *
+ * http://www.dspace.org/license/
+ */
+package org.dspace.app.rest.converter;
+
+import java.util.LinkedList;
+import java.util.List;
+
+import org.apache.commons.cli.Option;
+import org.apache.commons.collections4.CollectionUtils;
+import org.dspace.app.rest.model.ParameterRest;
+import org.dspace.app.rest.model.ScriptRest;
+import org.dspace.app.rest.projection.Projection;
+import org.dspace.scripts.DSpaceRunnable;
+import org.springframework.stereotype.Component;
+
+/**
+ * This converter will convert an object of {@Link DSpaceRunnable} to an object
+ * of {@link ScriptRest}
+ */
+@Component
+public class ScriptConverter implements DSpaceConverter<DSpaceRunnable, ScriptRest> {
+
+    @Override
+    public ScriptRest convert(DSpaceRunnable script, Projection projection) {
+        ScriptRest scriptRest = new ScriptRest();
+        scriptRest.setProjection(projection);
+        scriptRest.setDescription(script.getDescription());
+        scriptRest.setId(script.getName());
+        scriptRest.setName(script.getName());
+
+        List<ParameterRest> parameterRestList = new LinkedList<>();
+        for (Option option : CollectionUtils.emptyIfNull(script.getOptions().getOptions())) {
+            ParameterRest parameterRest = new ParameterRest();
+            parameterRest.setDescription(option.getDescription());
+            parameterRest.setName((option.getOpt() != null ? "-" + option.getOpt() : "--" + option.getLongOpt()));
+            parameterRest.setType(((Class) option.getType()).getSimpleName());
+            parameterRestList.add(parameterRest);
+        }
+        scriptRest.setParameterRestList(parameterRestList);
+
+        return scriptRest;
+    }
+
+    @Override
+    public Class<DSpaceRunnable> getModelClass() {
+        return DSpaceRunnable.class;
+    }
+}

dspace-server-webapp/src/main/java/org/dspace/app/rest/converter/SiteConverter.java

@@ -8,6 +8,7 @@
 package org.dspace.app.rest.converter;
 
 import org.dspace.app.rest.model.SiteRest;
+import org.dspace.app.rest.projection.Projection;
 import org.dspace.content.Site;
 import org.springframework.stereotype.Component;
 
@@ -18,16 +19,11 @@ import org.springframework.stereotype.Component;
  * @author Andrea Bollini (andrea.bollini at 4science.it)
  */
 @Component
-public class SiteConverter
-    extends DSpaceObjectConverter<org.dspace.content.Site, org.dspace.app.rest.model.SiteRest> {
-    @Override
-    public org.dspace.content.Site toModel(org.dspace.app.rest.model.SiteRest obj) {
-        return (org.dspace.content.Site) super.toModel(obj);
-    }
+public class SiteConverter extends DSpaceObjectConverter<Site, SiteRest> {
 
     @Override
-    public SiteRest fromModel(org.dspace.content.Site obj) {
-        return (SiteRest) super.fromModel(obj);
+    public SiteRest convert(Site obj, Projection projection) {
+        return super.convert(obj, projection);
     }
 
     @Override
@@ -36,7 +32,7 @@ public class SiteConverter
     }
 
     @Override
-    protected Class<Site> getModelClass() {
+    public Class<Site> getModelClass() {
         return Site.class;
     }
 }

dspace-server-webapp/src/main/java/org/dspace/app/rest/converter/SubmissionDefinitionConverter.java

@@ -13,11 +13,11 @@ import java.util.List;
 import java.util.stream.Collectors;
 import javax.servlet.http.HttpServletRequest;
 
-import org.apache.commons.lang3.NotImplementedException;
 import org.apache.logging.log4j.Logger;
 import org.dspace.app.rest.model.CollectionRest;
 import org.dspace.app.rest.model.SubmissionDefinitionRest;
 import org.dspace.app.rest.model.SubmissionSectionRest;
+import org.dspace.app.rest.projection.Projection;
 import org.dspace.app.rest.utils.ContextUtil;
 import org.dspace.app.util.SubmissionConfig;
 import org.dspace.app.util.SubmissionConfigReaderException;
@@ -47,17 +47,18 @@ public class SubmissionDefinitionConverter implements DSpaceConverter<Submission
     private RequestService requestService;
 
     @Autowired
-    private CollectionConverter collectionConverter;
+    private ConverterService converter;
 
     @Override
-    public SubmissionDefinitionRest fromModel(SubmissionConfig obj) {
+    public SubmissionDefinitionRest convert(SubmissionConfig obj, Projection projection) {
         SubmissionDefinitionRest sd = new SubmissionDefinitionRest();
+        sd.setProjection(projection);
         sd.setName(obj.getSubmissionName());
         sd.setDefaultConf(obj.isDefaultConf());
         List<SubmissionSectionRest> panels = new LinkedList<SubmissionSectionRest>();
         for (int idx = 0; idx < obj.getNumberOfSteps(); idx++) {
             SubmissionStepConfig step = obj.getStep(idx);
-            SubmissionSectionRest sp = panelConverter.convert(step);
+            SubmissionSectionRest sp = converter.toRest(step, projection);
             panels.add(sp);
         }
 
@@ -68,8 +69,9 @@ public class SubmissionDefinitionConverter implements DSpaceConverter<Submission
             List<Collection> collections = panelConverter.getSubmissionConfigReader()
                                                          .getCollectionsBySubmissionConfig(context,
                                                                                            obj.getSubmissionName());
-            List<CollectionRest> collectionsRest = collections.stream().map(
-                (collection) -> collectionConverter.convert(collection)).collect(Collectors.toList());
+            DSpaceConverter<Collection, CollectionRest> cc = converter.getConverter(Collection.class);
+            List<CollectionRest> collectionsRest = collections.stream().map((collection) ->
+                    cc.convert(collection, projection)).collect(Collectors.toList());
             sd.setCollections(collectionsRest);
         } catch (SQLException | IllegalStateException | SubmissionConfigReaderException e) {
             log.error(e.getMessage(), e);
@@ -79,7 +81,7 @@ public class SubmissionDefinitionConverter implements DSpaceConverter<Submission
     }
 
     @Override
-    public SubmissionConfig toModel(SubmissionDefinitionRest obj) {
-        throw new NotImplementedException("Method not implemented");
+    public Class<SubmissionConfig> getModelClass() {
+        return SubmissionConfig.class;
     }
 }