diff --git a/dspace-api/src/main/java/org/dspace/app/requestitem/RequestItem.java b/dspace-api/src/main/java/org/dspace/app/requestitem/RequestItem.java
index 2732640904..47346eca6c 100644
--- a/dspace-api/src/main/java/org/dspace/app/requestitem/RequestItem.java
+++ b/dspace-api/src/main/java/org/dspace/app/requestitem/RequestItem.java
@@ -9,6 +9,7 @@ package org.dspace.app.requestitem;
 
 import org.dspace.content.Bitstream;
 import org.dspace.content.Item;
+import org.dspace.core.Context;
 
 import javax.persistence.*;
 import java.util.Date;
@@ -67,7 +68,12 @@ public class RequestItem {
     @Column(name = "accept_request")
     private Boolean accept_request = null;
 
-    public RequestItem() {
+    /**
+     * Protected constructor, create object using:
+     * {@link org.dspace.app.requestitem.service.RequestItemService#createRequest(Context, Bitstream, Item, boolean, String, String, String)}
+     */
+    protected RequestItem()
+    {
     }
 
     public int getID() {
diff --git a/dspace-api/src/main/java/org/dspace/app/util/WebApp.java b/dspace-api/src/main/java/org/dspace/app/util/WebApp.java
index 4d7bf73eaf..4c1adbc245 100644
--- a/dspace-api/src/main/java/org/dspace/app/util/WebApp.java
+++ b/dspace-api/src/main/java/org/dspace/app/util/WebApp.java
@@ -7,6 +7,8 @@
  */
 package org.dspace.app.util;
 
+import org.dspace.core.Context;
+
 import javax.persistence.*;
 import java.util.Date;
 
@@ -39,6 +41,15 @@ public class WebApp {
     @Column(name = "isui")
     private Integer isui;
 
+    /**
+     * Protected constructor, create object using:
+     * {@link org.dspace.app.util.service.WebAppService#create(Context, String, String, Date, int)}
+     */
+    protected WebApp()
+    {
+
+    }
+
     public Integer getId() {
         return id;
     }
diff --git a/dspace-api/src/main/java/org/dspace/authorize/ResourcePolicy.java b/dspace-api/src/main/java/org/dspace/authorize/ResourcePolicy.java
index e53af1d918..b8e124a504 100644
--- a/dspace-api/src/main/java/org/dspace/authorize/ResourcePolicy.java
+++ b/dspace-api/src/main/java/org/dspace/authorize/ResourcePolicy.java
@@ -9,6 +9,7 @@ package org.dspace.authorize;
 
 import org.apache.commons.lang.ObjectUtils;
 import org.dspace.content.DSpaceObject;
+import org.dspace.core.Context;
 import org.dspace.eperson.EPerson;
 import org.dspace.eperson.Group;
 import org.hibernate.proxy.HibernateProxyHelper;
@@ -72,6 +73,15 @@ public class ResourcePolicy{
     @Column(name="rpdescription", length = 100)
     private String rpdescription;
 
+    /**
+     * Protected constructor, create object using:
+     * {@link org.dspace.authorize.service.ResourcePolicyService#create(Context)}
+     */
+    protected ResourcePolicy()
+    {
+
+    }
+
     /**
      * Return true if this object equals obj, false otherwise.
      *
diff --git a/dspace-api/src/main/java/org/dspace/checker/ChecksumHistory.java b/dspace-api/src/main/java/org/dspace/checker/ChecksumHistory.java
index 2185676bbf..267fa4ce1b 100644
--- a/dspace-api/src/main/java/org/dspace/checker/ChecksumHistory.java
+++ b/dspace-api/src/main/java/org/dspace/checker/ChecksumHistory.java
@@ -7,6 +7,8 @@
  */
 package org.dspace.checker;
 
+import org.dspace.core.Context;
+
 import javax.persistence.*;
 import java.util.Date;
 import java.util.UUID;
@@ -55,7 +57,11 @@ public class ChecksumHistory
     private ChecksumResult checksumResult;
 
 
-    public ChecksumHistory()
+    /**
+     * Protected constructor, create object using:
+     * {@link org.dspace.checker.service.ChecksumHistoryService#addHistory(Context, MostRecentChecksum)}
+     */
+    protected ChecksumHistory()
     {
     }
 
diff --git a/dspace-api/src/main/java/org/dspace/checker/ChecksumResult.java b/dspace-api/src/main/java/org/dspace/checker/ChecksumResult.java
index b8e44824eb..08d02bb625 100644
--- a/dspace-api/src/main/java/org/dspace/checker/ChecksumResult.java
+++ b/dspace-api/src/main/java/org/dspace/checker/ChecksumResult.java
@@ -28,6 +28,13 @@ public class ChecksumResult
     @Column(name = "result_description")
     private String resultDescription;
 
+    /**
+     * Protected constructor, new object creation impossible
+     */
+    protected ChecksumResult()
+    {
+
+    }
     public ChecksumResultCode getResultCode() {
         return resultCode;
     }
diff --git a/dspace-api/src/main/java/org/dspace/checker/MostRecentChecksum.java b/dspace-api/src/main/java/org/dspace/checker/MostRecentChecksum.java
index 54537b5bb9..b1262e6a8e 100644
--- a/dspace-api/src/main/java/org/dspace/checker/MostRecentChecksum.java
+++ b/dspace-api/src/main/java/org/dspace/checker/MostRecentChecksum.java
@@ -61,6 +61,16 @@ public class MostRecentChecksum implements Serializable
     @JoinColumn(name= "result")
     private ChecksumResult checksumResult;
 
+
+    /**
+     * Protected constructor, create handled by the
+     * {@link org.dspace.checker.service.MostRecentChecksumService}
+     */
+    protected MostRecentChecksum()
+    {
+
+    }
+
     public Bitstream getBitstream() {
         return bitstream;
     }
diff --git a/dspace-api/src/main/java/org/dspace/content/Bitstream.java b/dspace-api/src/main/java/org/dspace/content/Bitstream.java
index efeb067142..56ea77ea4d 100644
--- a/dspace-api/src/main/java/org/dspace/content/Bitstream.java
+++ b/dspace-api/src/main/java/org/dspace/content/Bitstream.java
@@ -7,6 +7,7 @@
  */
 package org.dspace.content;
 
+import java.io.InputStream;
 import java.sql.SQLException;
 import java.util.ArrayList;
 import java.util.List;
@@ -74,7 +75,13 @@ public class Bitstream extends DSpaceObject implements DSpaceObjectLegacySupport
     private transient BitstreamService bitstreamService;
 
 
-    public Bitstream()
+    /**
+     * Protected constructor, create object using:
+     * {@link org.dspace.content.service.BitstreamService#create(Context, Bundle, InputStream)}
+     * or
+     * {@link org.dspace.content.service.BitstreamService#create(Context, InputStream)}
+     */
+    protected Bitstream()
     {
     }
 
diff --git a/dspace-api/src/main/java/org/dspace/content/BitstreamFormat.java b/dspace-api/src/main/java/org/dspace/content/BitstreamFormat.java
index b43a33c73b..4561b037ca 100644
--- a/dspace-api/src/main/java/org/dspace/content/BitstreamFormat.java
+++ b/dspace-api/src/main/java/org/dspace/content/BitstreamFormat.java
@@ -95,6 +95,16 @@ public class BitstreamFormat implements Serializable
     @Transient
     public static final int SUPPORTED = 2;
 
+    /**
+     * Protected constructor, create object using:
+     * {@link org.dspace.content.service.BitstreamFormatService#create(Context)}
+     *
+     */
+    protected BitstreamFormat()
+    {
+
+    }
+
     /**
      * Get the internal identifier of this bitstream format
      * 
diff --git a/dspace-api/src/main/java/org/dspace/content/Bundle.java b/dspace-api/src/main/java/org/dspace/content/Bundle.java
index 316b29aeb4..9bf2111ad4 100644
--- a/dspace-api/src/main/java/org/dspace/content/Bundle.java
+++ b/dspace-api/src/main/java/org/dspace/content/Bundle.java
@@ -60,6 +60,11 @@ public class Bundle extends DSpaceObject implements DSpaceObjectLegacySupport
     @Transient
     protected transient BundleService bundleService;
 
+    /**
+     * Protected constructor, create object using:
+     * {@link org.dspace.content.service.BundleService#create(Context, Item, String)}
+     *
+     */
     protected Bundle()
     {
     }
diff --git a/dspace-api/src/main/java/org/dspace/content/Collection.java b/dspace-api/src/main/java/org/dspace/content/Collection.java
index 1182430379..9bc9058bff 100644
--- a/dspace-api/src/main/java/org/dspace/content/Collection.java
+++ b/dspace-api/src/main/java/org/dspace/content/Collection.java
@@ -100,6 +100,13 @@ public class Collection extends DSpaceObject implements DSpaceObjectLegacySuppor
     @Transient
     public static final String PROVENANCE_TEXT = "provenance_description";
 
+    /**
+     * Protected constructor, create object using:
+     * {@link org.dspace.content.service.CollectionService#create(Context, Community)}
+     * or
+     * {@link org.dspace.content.service.CollectionService#create(Context, Community, String)}
+     *
+     */
     protected Collection()
     {
 
diff --git a/dspace-api/src/main/java/org/dspace/content/Community.java b/dspace-api/src/main/java/org/dspace/content/Community.java
index 1b33a6b0f1..e998db44e4 100644
--- a/dspace-api/src/main/java/org/dspace/content/Community.java
+++ b/dspace-api/src/main/java/org/dspace/content/Community.java
@@ -71,7 +71,16 @@ public class Community extends DSpaceObject implements DSpaceObjectLegacySupport
     @Transient
     protected transient CommunityService communityService;
 
-    protected Community() {
+    /**
+     * Protected constructor, create object using:
+     * {@link org.dspace.content.service.CommunityService#create(Community, Context)}
+     * or
+     * {@link org.dspace.content.service.CommunityService#create(Community, Context, String)}
+     *
+     */
+    protected Community()
+    {
+
     }
 
     void addSubCommunity(Community subCommunity)
diff --git a/dspace-api/src/main/java/org/dspace/content/DSpaceObject.java b/dspace-api/src/main/java/org/dspace/content/DSpaceObject.java
index be5f1d659a..61013746bc 100644
--- a/dspace-api/src/main/java/org/dspace/content/DSpaceObject.java
+++ b/dspace-api/src/main/java/org/dspace/content/DSpaceObject.java
@@ -61,6 +61,10 @@ public abstract class DSpaceObject implements Serializable
     @Transient
     private boolean modified = false;
 
+    protected DSpaceObject()
+    {
+
+    }
 
     /**
      * Reset the cache of event details.
diff --git a/dspace-api/src/main/java/org/dspace/content/Item.java b/dspace-api/src/main/java/org/dspace/content/Item.java
index b2b4236f73..a9046b27bf 100644
--- a/dspace-api/src/main/java/org/dspace/content/Item.java
+++ b/dspace-api/src/main/java/org/dspace/content/Item.java
@@ -10,6 +10,7 @@ package org.dspace.content;
 import org.dspace.content.factory.ContentServiceFactory;
 import org.dspace.content.service.ItemService;
 import org.dspace.core.Constants;
+import org.dspace.core.Context;
 import org.dspace.eperson.EPerson;
 import org.hibernate.proxy.HibernateProxyHelper;
 
@@ -86,7 +87,14 @@ public class Item extends DSpaceObject implements DSpaceObjectLegacySupport
     @Transient
     private transient ItemService itemService;
 
-    protected Item() {
+    /**
+     * Protected constructor, create object using:
+     * {@link org.dspace.content.service.ItemService#create(Context, WorkspaceItem)}
+     *
+     */
+    protected Item()
+    {
+
     }
 
     /**
diff --git a/dspace-api/src/main/java/org/dspace/content/MetadataField.java b/dspace-api/src/main/java/org/dspace/content/MetadataField.java
index 4be0795c82..267c1fa2c5 100644
--- a/dspace-api/src/main/java/org/dspace/content/MetadataField.java
+++ b/dspace-api/src/main/java/org/dspace/content/MetadataField.java
@@ -7,6 +7,7 @@
  */
 package org.dspace.content;
 
+import org.dspace.core.Context;
 import org.hibernate.proxy.HibernateProxyHelper;
 
 import javax.persistence.*;
@@ -46,6 +47,11 @@ public class MetadataField {
     @Column(name="scope_note", columnDefinition = "text")
     private String scopeNote;
 
+    /**
+     * Protected constructor, create object using:
+     * {@link org.dspace.content.service.MetadataFieldService#create(Context, MetadataSchema, String, String, String)}
+     *
+     */
     protected MetadataField()
     {
 
diff --git a/dspace-api/src/main/java/org/dspace/content/MetadataSchema.java b/dspace-api/src/main/java/org/dspace/content/MetadataSchema.java
index f5bc02b87f..4558cd7013 100644
--- a/dspace-api/src/main/java/org/dspace/content/MetadataSchema.java
+++ b/dspace-api/src/main/java/org/dspace/content/MetadataSchema.java
@@ -7,6 +7,7 @@
  */
 package org.dspace.content;
 
+import org.dspace.core.Context;
 import org.hibernate.proxy.HibernateProxyHelper;
 
 import javax.persistence.*;
@@ -43,7 +44,14 @@ public class MetadataSchema
     @Column(name = "short_id", unique = true, length = 32)
     private String name;
 
-    protected MetadataSchema() {
+    /**
+     * Protected constructor, create object using:
+     * {@link org.dspace.content.service.MetadataSchemaService#create(Context, String, String)}
+     *
+     */
+    protected MetadataSchema()
+    {
+
     }
 
     @Override
diff --git a/dspace-api/src/main/java/org/dspace/content/MetadataValue.java b/dspace-api/src/main/java/org/dspace/content/MetadataValue.java
index c2e2b73d38..97214bd5fb 100644
--- a/dspace-api/src/main/java/org/dspace/content/MetadataValue.java
+++ b/dspace-api/src/main/java/org/dspace/content/MetadataValue.java
@@ -7,6 +7,7 @@
  */
 package org.dspace.content;
 
+import org.dspace.core.Context;
 import org.hibernate.annotations.Type;
 import org.hibernate.proxy.HibernateProxyHelper;
 
@@ -65,7 +66,14 @@ public class MetadataValue
     @JoinColumn(name="dspace_object_id")
     protected DSpaceObject dSpaceObject;
 
-    protected MetadataValue() {
+    /**
+     * Protected constructor, create object using:
+     * {@link org.dspace.content.service.MetadataValueService#create(Context, DSpaceObject, MetadataField)}
+     *
+     */
+    protected MetadataValue()
+    {
+
     }
 
     /**
diff --git a/dspace-api/src/main/java/org/dspace/content/Site.java b/dspace-api/src/main/java/org/dspace/content/Site.java
index a421459d91..bb90192f52 100644
--- a/dspace-api/src/main/java/org/dspace/content/Site.java
+++ b/dspace-api/src/main/java/org/dspace/content/Site.java
@@ -11,6 +11,7 @@ import org.dspace.content.factory.ContentServiceFactory;
 import org.dspace.content.service.SiteService;
 import org.dspace.core.ConfigurationManager;
 import org.dspace.core.Constants;
+import org.dspace.core.Context;
 
 import javax.persistence.Entity;
 import javax.persistence.Table;
@@ -28,6 +29,16 @@ public class Site extends DSpaceObject
     @Transient
     private transient SiteService siteService;
 
+    /**
+     * Protected constructor, create object using:
+     * {@link org.dspace.content.service.SiteService#createSite(Context)}
+     *
+     */
+    protected Site()
+    {
+
+    }
+
     /**
      * Get the type of this object, found in Constants
      *
diff --git a/dspace-api/src/main/java/org/dspace/content/WorkspaceItem.java b/dspace-api/src/main/java/org/dspace/content/WorkspaceItem.java
index f14594788f..a902bb5096 100644
--- a/dspace-api/src/main/java/org/dspace/content/WorkspaceItem.java
+++ b/dspace-api/src/main/java/org/dspace/content/WorkspaceItem.java
@@ -13,8 +13,10 @@ import java.util.ArrayList;
 import java.util.List;
 
 import org.apache.commons.lang.builder.HashCodeBuilder;
+import org.dspace.core.Context;
 import org.dspace.eperson.EPerson;
 import org.dspace.eperson.Group;
+import org.dspace.workflow.WorkflowItem;
 import org.hibernate.proxy.HibernateProxyHelper;
 
 import javax.persistence.*;
@@ -70,6 +72,17 @@ public class WorkspaceItem implements InProgressSubmission, Serializable
     )
     private final List<Group> supervisorGroups = new ArrayList<>();
 
+    /**
+     * Protected constructor, create object using:
+     * {@link org.dspace.content.service.WorkspaceItemService#create(Context, Collection, boolean)}
+     * or
+     * {@link org.dspace.content.service.WorkspaceItemService#create(Context, WorkflowItem)}
+     *
+     */
+    protected WorkspaceItem()
+    {
+
+    }
 
     /**
      * Get the internal ID of this workspace item
diff --git a/dspace-api/src/main/java/org/dspace/eperson/EPerson.java b/dspace-api/src/main/java/org/dspace/eperson/EPerson.java
index 9e697b6251..8e75bfb59b 100644
--- a/dspace-api/src/main/java/org/dspace/eperson/EPerson.java
+++ b/dspace-api/src/main/java/org/dspace/eperson/EPerson.java
@@ -84,7 +84,14 @@ public class EPerson extends DSpaceObject implements DSpaceObjectLegacySupport
     @Transient
     protected transient EPersonService ePersonService;
 
-    protected EPerson() {
+    /**
+     * Protected constructor, create object using:
+     * {@link org.dspace.eperson.service.EPersonService#create(Context)}
+     *
+     */
+    protected EPerson()
+    {
+
     }
 
     @Override
diff --git a/dspace-api/src/main/java/org/dspace/eperson/Group.java b/dspace-api/src/main/java/org/dspace/eperson/Group.java
index 75e78c6a43..9fb3baa0ae 100644
--- a/dspace-api/src/main/java/org/dspace/eperson/Group.java
+++ b/dspace-api/src/main/java/org/dspace/eperson/Group.java
@@ -74,7 +74,14 @@ public class Group extends DSpaceObject implements DSpaceObjectLegacySupport
     @Transient
     private transient GroupService groupService;
 
-    public Group() {
+    /**
+     * Protected constructor, create object using:
+     * {@link org.dspace.eperson.service.GroupService#create(Context)}
+     *
+     */
+    protected Group()
+    {
+
     }
 
     void addMember(EPerson e)
diff --git a/dspace-api/src/main/java/org/dspace/eperson/Group2GroupCache.java b/dspace-api/src/main/java/org/dspace/eperson/Group2GroupCache.java
index 4465ade8c5..1ec0d5ffe9 100644
--- a/dspace-api/src/main/java/org/dspace/eperson/Group2GroupCache.java
+++ b/dspace-api/src/main/java/org/dspace/eperson/Group2GroupCache.java
@@ -47,6 +47,16 @@ public class Group2GroupCache implements Serializable {
         this.child = child;
     }
 
+    /**
+     * Protected constructor, create object using:
+     * {@link org.dspace.eperson.service.GroupService}
+     *
+     */
+    protected Group2GroupCache()
+    {
+
+    }
+
     @Override
     public boolean equals(Object obj) {
         if (obj == null)
diff --git a/dspace-api/src/main/java/org/dspace/eperson/RegistrationData.java b/dspace-api/src/main/java/org/dspace/eperson/RegistrationData.java
index db36084aa2..9da5e3c0b8 100644
--- a/dspace-api/src/main/java/org/dspace/eperson/RegistrationData.java
+++ b/dspace-api/src/main/java/org/dspace/eperson/RegistrationData.java
@@ -7,6 +7,8 @@
  */
 package org.dspace.eperson;
 
+import org.dspace.core.Context;
+
 import javax.persistence.*;
 import java.util.Date;
 
@@ -35,6 +37,16 @@ public class RegistrationData {
     @Temporal(TemporalType.TIMESTAMP)
     private Date expires;
 
+    /**
+     * Protected constructor, create object using:
+     * {@link org.dspace.eperson.service.RegistrationDataService#create(Context)}
+     *
+     */
+    protected RegistrationData()
+    {
+
+    }
+
     public int getId() {
         return id;
     }
diff --git a/dspace-api/src/main/java/org/dspace/eperson/Subscription.java b/dspace-api/src/main/java/org/dspace/eperson/Subscription.java
index fb2efde022..2bce2407db 100644
--- a/dspace-api/src/main/java/org/dspace/eperson/Subscription.java
+++ b/dspace-api/src/main/java/org/dspace/eperson/Subscription.java
@@ -8,6 +8,7 @@
 package org.dspace.eperson;
 
 import org.dspace.content.Collection;
+import org.dspace.core.Context;
 
 import javax.persistence.*;
 
@@ -34,7 +35,14 @@ public class Subscription {
     @JoinColumn(name = "eperson_id")
     private EPerson ePerson;
 
-    protected Subscription() {
+    /**
+     * Protected constructor, create object using:
+     * {@link org.dspace.eperson.service.SubscribeService#subscribe(Context, EPerson, Collection)}
+     *
+     */
+    protected Subscription()
+    {
+
     }
 
     public int getId() {
diff --git a/dspace-api/src/main/java/org/dspace/handle/Handle.java b/dspace-api/src/main/java/org/dspace/handle/Handle.java
index 5ba7c77447..4297d39892 100644
--- a/dspace-api/src/main/java/org/dspace/handle/Handle.java
+++ b/dspace-api/src/main/java/org/dspace/handle/Handle.java
@@ -8,6 +8,7 @@
 package org.dspace.handle;
 
 import org.dspace.content.DSpaceObject;
+import org.dspace.core.Context;
 
 import javax.persistence.*;
 
@@ -36,6 +37,20 @@ public class Handle {
     @Column(name = "resource_type_id")
     private Integer resourceTypeId;
 
+    /**
+     * Protected constructor, create object using:
+     * {@link org.dspace.handle.service.HandleService#createHandle(Context, DSpaceObject)}
+     * or
+     * {@link org.dspace.handle.service.HandleService#createHandle(Context, DSpaceObject, String)}
+     * or
+     * {@link org.dspace.handle.service.HandleService#createHandle(Context, DSpaceObject, String, boolean)}
+     *
+     */
+    protected Handle()
+    {
+
+    }
+
     public Integer getId() {
         return id;
     }
diff --git a/dspace-api/src/main/java/org/dspace/harvest/HarvestedCollection.java b/dspace-api/src/main/java/org/dspace/harvest/HarvestedCollection.java
index 8100eb7640..fdc15290db 100644
--- a/dspace-api/src/main/java/org/dspace/harvest/HarvestedCollection.java
+++ b/dspace-api/src/main/java/org/dspace/harvest/HarvestedCollection.java
@@ -8,6 +8,7 @@
 package org.dspace.harvest;
 
 import org.dspace.content.Collection;
+import org.dspace.core.Context;
 
 import javax.persistence.*;
 import java.util.Date;
@@ -75,8 +76,13 @@ public class HarvestedCollection
 	public static final int STATUS_OAI_ERROR = 3;
     @Transient
 	public static final int STATUS_UNKNOWN_ERROR = -1;
-	
-	public HarvestedCollection()
+
+    /**
+     * Protected constructor, create object using:
+     * {@link org.dspace.harvest.service.HarvestedCollectionService#create(Context, Collection)}
+     *
+     */
+	protected HarvestedCollection()
     {
     }
 
diff --git a/dspace-api/src/main/java/org/dspace/harvest/HarvestedItem.java b/dspace-api/src/main/java/org/dspace/harvest/HarvestedItem.java
index 8dfde509f1..a32494adb5 100644
--- a/dspace-api/src/main/java/org/dspace/harvest/HarvestedItem.java
+++ b/dspace-api/src/main/java/org/dspace/harvest/HarvestedItem.java
@@ -10,6 +10,7 @@ package org.dspace.harvest;
 import java.util.Date;
 
 import org.dspace.content.Item;
+import org.dspace.core.Context;
 
 import javax.persistence.*;
 
@@ -38,8 +39,12 @@ public class HarvestedItem
     private String oaiId;
 
 
-
-    public HarvestedItem()
+    /**
+     * Protected constructor, create object using:
+     * {@link org.dspace.harvest.service.HarvestedItemService#create(Context, Item, String)}
+     *
+     */
+    protected HarvestedItem()
     {
     }
 
diff --git a/dspace-api/src/main/java/org/dspace/identifier/DOI.java b/dspace-api/src/main/java/org/dspace/identifier/DOI.java
index 309e7ee831..589321dfc8 100644
--- a/dspace-api/src/main/java/org/dspace/identifier/DOI.java
+++ b/dspace-api/src/main/java/org/dspace/identifier/DOI.java
@@ -9,6 +9,7 @@
 package org.dspace.identifier;
 
 import org.dspace.content.DSpaceObject;
+import org.dspace.core.Context;
 
 import javax.persistence.*;
 
@@ -42,6 +43,15 @@ public class DOI
     @Column(name = "status")
     private Integer status;
 
+    /**
+     * Protected constructor, create object using:
+     * {@link org.dspace.identifier.service.DOIService#create(Context)}
+     *
+     */
+    protected DOI()
+    {
+    }
+
     public Integer getId() {
         return id;
     }
diff --git a/dspace-api/src/main/java/org/dspace/versioning/Version.java b/dspace-api/src/main/java/org/dspace/versioning/Version.java
index 1a866b3a5c..182b4382b4 100644
--- a/dspace-api/src/main/java/org/dspace/versioning/Version.java
+++ b/dspace-api/src/main/java/org/dspace/versioning/Version.java
@@ -8,6 +8,7 @@
 package org.dspace.versioning;
 
 import org.dspace.content.Item;
+import org.dspace.core.Context;
 import org.dspace.eperson.EPerson;
 import org.hibernate.proxy.HibernateProxyHelper;
 
@@ -53,6 +54,20 @@ public class Version {
     @JoinColumn(name = "versionhistory_id")
     private VersionHistory versionHistory;
 
+    /**
+     * Protected constructor, create object using:
+     * {@link org.dspace.versioning.service.VersioningService#createNewVersion(Context, Item)}
+     * or
+     * {@link org.dspace.versioning.service.VersioningService#createNewVersion(Context, Item, String)}
+     * or
+     * {@link org.dspace.versioning.service.VersioningService#createNewVersion(Context, VersionHistory, Item, String, Date, int)}
+     *
+     */
+    protected Version()
+    {
+
+    }
+
     public int getId() {
         return id;
     }
diff --git a/dspace-api/src/main/java/org/dspace/versioning/VersionHistory.java b/dspace-api/src/main/java/org/dspace/versioning/VersionHistory.java
index 707a631d8e..22632e3c90 100644
--- a/dspace-api/src/main/java/org/dspace/versioning/VersionHistory.java
+++ b/dspace-api/src/main/java/org/dspace/versioning/VersionHistory.java
@@ -7,6 +7,7 @@
  */
 package org.dspace.versioning;
 
+import org.dspace.core.Context;
 import org.hibernate.proxy.HibernateProxyHelper;
 
 import javax.persistence.*;
@@ -35,6 +36,16 @@ public class VersionHistory {
     @OrderBy(value = "versionNumber desc")
     private List<Version> versions = new ArrayList<Version>();
 
+    /**
+     * Protected constructor, create object using:
+     * {@link org.dspace.versioning.service.VersionHistoryService#create(Context)}
+     *
+     */
+    protected VersionHistory()
+    {
+
+    }
+
     public int getId() {
         return id;
     }
diff --git a/dspace-api/src/main/java/org/dspace/workflowbasic/BasicWorkflowItem.java b/dspace-api/src/main/java/org/dspace/workflowbasic/BasicWorkflowItem.java
index f337c5af4d..a68fe417b5 100644
--- a/dspace-api/src/main/java/org/dspace/workflowbasic/BasicWorkflowItem.java
+++ b/dspace-api/src/main/java/org/dspace/workflowbasic/BasicWorkflowItem.java
@@ -11,6 +11,7 @@ import java.sql.SQLException;
 
 import org.dspace.content.Collection;
 import org.dspace.content.Item;
+import org.dspace.core.Context;
 import org.dspace.eperson.EPerson;
 import org.dspace.workflow.WorkflowItem;
 
@@ -61,6 +62,15 @@ public class BasicWorkflowItem implements WorkflowItem
     @Column(name = "multiple_files")
     private boolean multipleFiles = false;
 
+    /**
+     * Protected constructor, create object using:
+     * {@link org.dspace.workflowbasic.service.BasicWorkflowItemService#create(Context, Item, Collection)}
+     *
+     */
+    protected BasicWorkflowItem()
+    {
+
+    }
 
     /**
      * Get the internal ID of this workflow item
diff --git a/dspace-api/src/main/java/org/dspace/workflowbasic/TaskListItem.java b/dspace-api/src/main/java/org/dspace/workflowbasic/TaskListItem.java
index f008bc2c23..7a4175c758 100644
--- a/dspace-api/src/main/java/org/dspace/workflowbasic/TaskListItem.java
+++ b/dspace-api/src/main/java/org/dspace/workflowbasic/TaskListItem.java
@@ -7,6 +7,7 @@
  */
 package org.dspace.workflowbasic;
 
+import org.dspace.core.Context;
 import org.dspace.eperson.EPerson;
 
 import javax.persistence.*;
@@ -34,6 +35,16 @@ public class TaskListItem {
     @JoinColumn(name = "workflow_id")
     private BasicWorkflowItem workflowItem;
 
+    /**
+     * Protected constructor, create object using:
+     * {@link org.dspace.workflowbasic.service.TaskListItemService#create(Context, BasicWorkflowItem, EPerson)}
+     *
+     */
+    protected TaskListItem()
+    {
+
+    }
+
     public int getTaskListItemId() {
         return taskListItemId;
     }
diff --git a/dspace-api/src/main/java/org/dspace/xmlworkflow/storedcomponents/ClaimedTask.java b/dspace-api/src/main/java/org/dspace/xmlworkflow/storedcomponents/ClaimedTask.java
index 217d8fcdf0..a842122fda 100644
--- a/dspace-api/src/main/java/org/dspace/xmlworkflow/storedcomponents/ClaimedTask.java
+++ b/dspace-api/src/main/java/org/dspace/xmlworkflow/storedcomponents/ClaimedTask.java
@@ -7,6 +7,7 @@
  */
 package org.dspace.xmlworkflow.storedcomponents;
 
+import org.dspace.core.Context;
 import org.dspace.eperson.EPerson;
 
 import javax.persistence.*;
@@ -53,8 +54,14 @@ public class ClaimedTask {
     @JoinColumn(name = "owner_id")
     private EPerson owner;
 
-    public ClaimedTask()
+    /**
+     * Protected constructor, create object using:
+     * {@link org.dspace.xmlworkflow.storedcomponents.service.ClaimedTaskService#create(Context)}
+     *
+     */
+    protected ClaimedTask()
     {
+
     }
 
     public int getId() {
diff --git a/dspace-api/src/main/java/org/dspace/xmlworkflow/storedcomponents/CollectionRole.java b/dspace-api/src/main/java/org/dspace/xmlworkflow/storedcomponents/CollectionRole.java
index 7a715627f1..55296e3eed 100644
--- a/dspace-api/src/main/java/org/dspace/xmlworkflow/storedcomponents/CollectionRole.java
+++ b/dspace-api/src/main/java/org/dspace/xmlworkflow/storedcomponents/CollectionRole.java
@@ -8,6 +8,7 @@
 package org.dspace.xmlworkflow.storedcomponents;
 
 import org.dspace.content.Collection;
+import org.dspace.core.Context;
 import org.dspace.eperson.Group;
 
 import javax.persistence.*;
@@ -48,8 +49,14 @@ public class CollectionRole {
     @JoinColumn(name = "group_id")
     private Group group;
 
+    /**
+     * Protected constructor, create object using:
+     * {@link org.dspace.xmlworkflow.storedcomponents.service.CollectionRoleService#create(Context, Collection, String, Group)}
+     *
+     */
+    protected CollectionRole()
+    {
 
-    public CollectionRole() {
     }
 
     public void setRoleId(String id){
diff --git a/dspace-api/src/main/java/org/dspace/xmlworkflow/storedcomponents/InProgressUser.java b/dspace-api/src/main/java/org/dspace/xmlworkflow/storedcomponents/InProgressUser.java
index a6cd778fb0..c3a92941ba 100644
--- a/dspace-api/src/main/java/org/dspace/xmlworkflow/storedcomponents/InProgressUser.java
+++ b/dspace-api/src/main/java/org/dspace/xmlworkflow/storedcomponents/InProgressUser.java
@@ -7,6 +7,7 @@
  */
 package org.dspace.xmlworkflow.storedcomponents;
 
+import org.dspace.core.Context;
 import org.dspace.eperson.EPerson;
 
 import javax.persistence.*;
@@ -40,7 +41,14 @@ public class InProgressUser {
     @Column(name ="finished")
     private boolean finished = false;
 
-    public InProgressUser() {
+    /**
+     * Protected constructor, create object using:
+     * {@link org.dspace.xmlworkflow.storedcomponents.service.InProgressUserService#create(Context)}
+     *
+     */
+    protected InProgressUser()
+    {
+
     }
 
     public int getId() {
diff --git a/dspace-api/src/main/java/org/dspace/xmlworkflow/storedcomponents/PoolTask.java b/dspace-api/src/main/java/org/dspace/xmlworkflow/storedcomponents/PoolTask.java
index 28d3604366..6a7a53848f 100644
--- a/dspace-api/src/main/java/org/dspace/xmlworkflow/storedcomponents/PoolTask.java
+++ b/dspace-api/src/main/java/org/dspace/xmlworkflow/storedcomponents/PoolTask.java
@@ -7,6 +7,7 @@
  */
 package org.dspace.xmlworkflow.storedcomponents;
 
+import org.dspace.core.Context;
 import org.dspace.eperson.EPerson;
 import org.dspace.eperson.Group;
 
@@ -59,6 +60,15 @@ public class PoolTask {
     private Group group;
 
 
+    /**
+     * Protected constructor, create object using:
+     * {@link org.dspace.xmlworkflow.storedcomponents.service.PoolTaskService#create(Context)}
+     *
+     */
+    protected PoolTask()
+    {
+
+    }
 
     public void setEperson(EPerson eperson){
         this.ePerson = eperson;
diff --git a/dspace-api/src/main/java/org/dspace/xmlworkflow/storedcomponents/WorkflowItemRole.java b/dspace-api/src/main/java/org/dspace/xmlworkflow/storedcomponents/WorkflowItemRole.java
index caf2b5ad84..f33129393a 100644
--- a/dspace-api/src/main/java/org/dspace/xmlworkflow/storedcomponents/WorkflowItemRole.java
+++ b/dspace-api/src/main/java/org/dspace/xmlworkflow/storedcomponents/WorkflowItemRole.java
@@ -7,6 +7,7 @@
  */
 package org.dspace.xmlworkflow.storedcomponents;
 
+import org.dspace.core.Context;
 import org.dspace.eperson.EPerson;
 import org.dspace.eperson.Group;
 
@@ -50,6 +51,15 @@ public class WorkflowItemRole {
     @JoinColumn(name = "group_id")
     private Group group;
 
+    /**
+     * Protected constructor, create object using:
+     * {@link org.dspace.xmlworkflow.storedcomponents.service.WorkflowItemRoleService#create(Context)}
+     *
+     */
+    protected WorkflowItemRole()
+    {
+
+    }
 
 
     public void setRoleId(String id){
diff --git a/dspace-api/src/main/java/org/dspace/xmlworkflow/storedcomponents/XmlWorkflowItem.java b/dspace-api/src/main/java/org/dspace/xmlworkflow/storedcomponents/XmlWorkflowItem.java
index e74a07d117..7842c17230 100644
--- a/dspace-api/src/main/java/org/dspace/xmlworkflow/storedcomponents/XmlWorkflowItem.java
+++ b/dspace-api/src/main/java/org/dspace/xmlworkflow/storedcomponents/XmlWorkflowItem.java
@@ -9,6 +9,7 @@ package org.dspace.xmlworkflow.storedcomponents;
 
 import org.dspace.content.Collection;
 import org.dspace.content.Item;
+import org.dspace.core.Context;
 import org.dspace.eperson.EPerson;
 import org.dspace.workflow.WorkflowItem;
 
@@ -50,6 +51,16 @@ public class XmlWorkflowItem implements WorkflowItem {
     @Column(name = "multiple_files")
     private boolean multipleFiles = false;
 
+    /**
+     * Protected constructor, create object using:
+     * {@link org.dspace.xmlworkflow.storedcomponents.service.XmlWorkflowItemService#create(Context, Item, Collection)}
+     *
+     */
+    protected XmlWorkflowItem()
+    {
+
+    }
+
     /**
      * Get the internal ID of this workflow item
      *