mirror of
https://github.com/DSpace/DSpace.git
synced 2025-10-15 05:53:08 +00:00
Moved RelationshipMetadata logic to a new service
This commit is contained in:
Raf Ponsaerts
@@ -117,6 +117,9 @@ public class ItemServiceImpl extends DSpaceObjectServiceImpl<Item> implements It
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@Autowired(required = true)
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protected VirtualMetadataPopulator virtualMetadataPopulator;
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@Autowired(required = true)
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private RelationshipMetadataService relationshipMetadataService;
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protected ItemServiceImpl() {
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super();
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}
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@@ -1334,27 +1337,6 @@ prevent the generation of resource policy entry values with null dspace_object a
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return this.getMetadata(item, schema, element, qualifier, lang, true);
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}
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@Override
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public List<RelationshipMetadataValue> getRelationshipMetadata(Item item, boolean enableVirtualMetadata) {
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Context context = new Context();
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List<RelationshipMetadataValue> fullMetadataValueList = new LinkedList<>();
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try {
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List<MetadataValue> list = item.getMetadata();
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String entityType = getEntityTypeStringFromMetadata(list);
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if (StringUtils.isNotBlank(entityType)) {
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List<Relationship> relationships = relationshipService.findByItem(context, item);
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for (Relationship relationship : relationships) {
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fullMetadataValueList
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.addAll(handleItemRelationship(context, item, entityType, relationship, enableVirtualMetadata));
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}
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}
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} catch (SQLException e) {
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log.error("Lookup for Relationships for item with uuid: " + item.getID() + " caused DSpace to crash", e);
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}
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return fullMetadataValueList;
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}
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@Override
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public List<MetadataValue> getMetadata(Item item, String schema, String element, String qualifier, String lang,
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boolean enableVirtualMetadata) {
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@@ -1362,7 +1344,7 @@ prevent the generation of resource policy entry values with null dspace_object a
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//except for relation.type which is the type of item in the model
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if (StringUtils.equals(schema, MetadataSchemaEnum.RELATION.getName()) && !StringUtils.equals(element, "type")) {
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List<RelationshipMetadataValue> relationMetadata = getRelationshipMetadata(item, false);
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List<RelationshipMetadataValue> relationMetadata = relationshipMetadataService.getRelationshipMetadata(item, false);
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List<MetadataValue> listToReturn = new LinkedList<>();
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for (MetadataValue metadataValue : relationMetadata) {
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if (StringUtils.equals(metadataValue.getMetadataField().getElement(), element)) {
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@@ -1378,7 +1360,7 @@ prevent the generation of resource policy entry values with null dspace_object a
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List<MetadataValue> fullMetadataValueList = new LinkedList<>();
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if (enableVirtualMetadata) {
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fullMetadataValueList.addAll(getRelationshipMetadata(item, true));
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fullMetadataValueList.addAll(relationshipMetadataService.getRelationshipMetadata(item, true));
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}
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fullMetadataValueList.addAll(dbMetadataValues);
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@@ -1417,137 +1399,7 @@ prevent the generation of resource policy entry values with null dspace_object a
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return listToReturn;
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}
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//This method processes the Relationship of an Item and will return a list of RelationshipMetadataValue objects
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//that are generated for this specfic relationship for the item through the config in VirtualMetadataPopulator
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private List<RelationshipMetadataValue> handleItemRelationship(Context context, Item item, String entityType,
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Relationship relationship,
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boolean enableVirtualMetadata)
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throws SQLException {
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List<RelationshipMetadataValue> resultingMetadataValueList = new LinkedList<>();
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RelationshipType relationshipType = relationship.getRelationshipType();
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HashMap<String, VirtualMetadataConfiguration> hashMaps;
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String relationName = "";
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Item otherItem = null;
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int place = 0;
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if (StringUtils.equals(relationshipType.getLeftType().getLabel(), entityType)) {
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hashMaps = virtualMetadataPopulator.getMap().get(relationshipType.getLeftLabel());
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otherItem = relationship.getRightItem();
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relationName = relationship.getRelationshipType().getLeftLabel();
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place = relationship.getLeftPlace();
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} else if (StringUtils.equals(relationshipType.getRightType().getLabel(), entityType)) {
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hashMaps = virtualMetadataPopulator.getMap().get(relationshipType.getRightLabel());
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otherItem = relationship.getLeftItem();
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relationName = relationship.getRelationshipType().getRightLabel();
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place = relationship.getRightPlace();
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} else {
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//No virtual metadata can be created
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return resultingMetadataValueList;
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}
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if (hashMaps != null && enableVirtualMetadata) {
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resultingMetadataValueList.addAll(handleRelationshipTypeMetadataMapping(context, item, hashMaps,
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otherItem, relationName,
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relationship.getID(), place));
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}
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RelationshipMetadataValue relationMetadataFromOtherItem =
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getRelationMetadataFromOtherItem(context, otherItem, relationName, relationship.getID(), place);
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if (relationMetadataFromOtherItem != null) {
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resultingMetadataValueList.add(relationMetadataFromOtherItem);
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}
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return resultingMetadataValueList;
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}
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//This method will retrieve a list of RelationshipMetadataValue objects based on the config passed along in the
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//hashmaps parameter. The beans will be used to retrieve the values for the RelationshipMetadataValue objects
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//and the keys of the hashmap will be used to construct the RelationshipMetadataValue object.
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private List<RelationshipMetadataValue> handleRelationshipTypeMetadataMapping(Context context, Item item,
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HashMap<String, VirtualMetadataConfiguration> hashMaps,
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Item otherItem, String relationName,
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Integer relationshipId, int place)
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throws SQLException {
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List<RelationshipMetadataValue> resultingMetadataValueList = new LinkedList<>();
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for (Map.Entry<String, VirtualMetadataConfiguration> entry : hashMaps.entrySet()) {
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String key = entry.getKey();
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VirtualMetadataConfiguration virtualBean = entry.getValue();
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for (String value : virtualBean.getValues(context, otherItem)) {
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RelationshipMetadataValue metadataValue = constructMetadataValue(context, key);
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if (metadataValue != null) {
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metadataValue = constructResultingMetadataValue(item, value, metadataValue, relationshipId);
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metadataValue.setUseForPlace(virtualBean.getUseForPlace());
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metadataValue.setPlace(place);
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if (StringUtils.isNotBlank(metadataValue.getValue())) {
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resultingMetadataValueList.add(metadataValue);
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}
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}
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}
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}
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return resultingMetadataValueList;
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}
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private RelationshipMetadataValue getRelationMetadataFromOtherItem(Context context, Item otherItem,
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String relationName,
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Integer relationshipId, int place) {
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RelationshipMetadataValue metadataValue = constructMetadataValue(context,
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MetadataSchemaEnum.RELATION
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.getName() + "." + relationName);
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if (metadataValue != null) {
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metadataValue.setAuthority(Constants.VIRTUAL_AUTHORITY_PREFIX + relationshipId);
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metadataValue.setValue(otherItem.getID().toString());
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metadataValue.setPlace(place);
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return metadataValue;
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}
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return null;
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}
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private String getEntityTypeStringFromMetadata(List<MetadataValue> list) {
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for (MetadataValue mdv : list) {
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if (StringUtils.equals(mdv.getMetadataField().getMetadataSchema().getName(),
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"relationship")
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&& StringUtils.equals(mdv.getMetadataField().getElement(),
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"type")) {
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return mdv.getValue();
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}
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}
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return null;
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}
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private RelationshipMetadataValue constructResultingMetadataValue(Item item, String value,
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RelationshipMetadataValue metadataValue,
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Integer relationshipId) {
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metadataValue.setValue(value);
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metadataValue.setAuthority(Constants.VIRTUAL_AUTHORITY_PREFIX + relationshipId);
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metadataValue.setConfidence(-1);
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metadataValue.setDSpaceObject(item);
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return metadataValue;
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}
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//This method will construct a RelationshipMetadataValue object with proper schema, element and qualifier based
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//on the key String parameter passed along to it
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private RelationshipMetadataValue constructMetadataValue(Context context, String key) {
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String[] splittedKey = key.split("\\.");
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RelationshipMetadataValue metadataValue = new RelationshipMetadataValue();
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String metadataSchema = splittedKey.length > 0 ? splittedKey[0] : null;
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String metadataElement = splittedKey.length > 1 ? splittedKey[1] : null;
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String metadataQualifier = splittedKey.length > 2 ? splittedKey[2] : null;
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MetadataField metadataField = null;
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try {
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metadataField = metadataFieldService
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.findByElement(context, metadataSchema, metadataElement, metadataQualifier);
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} catch (SQLException e) {
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log.error("Could not find element with MetadataSchema: " + metadataSchema +
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", MetadataElement: " + metadataElement + " and MetadataQualifier: " + metadataQualifier, e);
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return null;
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}
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if (metadataField == null) {
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log.error("A MetadataValue was attempted to construct with MetadataField for parameters: " +
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"metadataschema: {}, metadataelement: {}, metadataqualifier: {}",
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metadataSchema, metadataElement, metadataQualifier);
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return null;
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}
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metadataValue.setMetadataField(metadataField);
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metadataValue.setLanguage(Item.ANY);
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return metadataValue;
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}
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}
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@@ -0,0 +1,19 @@
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package org.dspace.content;
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import java.util.List;
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import org.dspace.content.virtual.VirtualMetadataPopulator;
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public interface RelationshipMetadataService {
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/**
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* This method retrieves a list of MetadataValue objects that get constructed from processing
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* the given Item's Relationships through the config given to the {@link VirtualMetadataPopulator}
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* @param item The Item that will be processed through it's Relationships
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* @param enableVirtualMetadata This parameter will determine whether the list of Relationship metadata
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* should be populated with metadata that is being generated through the
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* VirtualMetadataPopulator functionality or not
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* @return The list of MetadataValue objects constructed through the Relationships
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*/
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public List<RelationshipMetadataValue> getRelationshipMetadata(Item item, boolean enableVirtualMetadata);
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}
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@@ -0,0 +1,190 @@
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package org.dspace.content;
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import java.sql.SQLException;
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import java.util.HashMap;
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import java.util.LinkedList;
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import java.util.List;
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import java.util.Map;
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import org.apache.commons.lang3.StringUtils;
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import org.apache.logging.log4j.Logger;
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import org.dspace.content.service.MetadataFieldService;
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import org.dspace.content.service.RelationshipService;
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import org.dspace.content.virtual.VirtualMetadataConfiguration;
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import org.dspace.content.virtual.VirtualMetadataPopulator;
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import org.dspace.core.Constants;
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import org.dspace.core.Context;
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import org.springframework.beans.factory.annotation.Autowired;
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public class RelationshipMetadataServiceImpl implements RelationshipMetadataService {
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/**
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* log4j category
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*/
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private static final Logger log = org.apache.logging.log4j.LogManager.getLogger();
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@Autowired(required = true)
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protected RelationshipService relationshipService;
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@Autowired(required = true)
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protected VirtualMetadataPopulator virtualMetadataPopulator;
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@Autowired(required = true)
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protected MetadataFieldService metadataFieldService;
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@Override
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public List<RelationshipMetadataValue> getRelationshipMetadata(Item item, boolean enableVirtualMetadata) {
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Context context = new Context();
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List<RelationshipMetadataValue> fullMetadataValueList = new LinkedList<>();
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try {
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List<MetadataValue> list = item.getMetadata();
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String entityType = getEntityTypeStringFromMetadata(list);
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if (StringUtils.isNotBlank(entityType)) {
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List<Relationship> relationships = relationshipService.findByItem(context, item);
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for (Relationship relationship : relationships) {
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fullMetadataValueList
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.addAll(handleItemRelationship(context, item, entityType, relationship, enableVirtualMetadata));
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}
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}
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} catch (SQLException e) {
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log.error("Lookup for Relationships for item with uuid: " + item.getID() + " caused DSpace to crash", e);
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}
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return fullMetadataValueList;
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}
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private String getEntityTypeStringFromMetadata(List<MetadataValue> list) {
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for (MetadataValue mdv : list) {
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if (StringUtils.equals(mdv.getMetadataField().getMetadataSchema().getName(),
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"relationship")
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&& StringUtils.equals(mdv.getMetadataField().getElement(),
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"type")) {
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return mdv.getValue();
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}
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}
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return null;
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}
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//This method processes the Relationship of an Item and will return a list of RelationshipMetadataValue objects
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//that are generated for this specfic relationship for the item through the config in VirtualMetadataPopulator
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private List<RelationshipMetadataValue> handleItemRelationship(Context context, Item item, String entityType,
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Relationship relationship,
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boolean enableVirtualMetadata)
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throws SQLException {
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List<RelationshipMetadataValue> resultingMetadataValueList = new LinkedList<>();
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RelationshipType relationshipType = relationship.getRelationshipType();
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HashMap<String, VirtualMetadataConfiguration> hashMaps;
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String relationName;
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Item otherItem;
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int place = 0;
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if (StringUtils.equals(relationshipType.getLeftType().getLabel(), entityType)) {
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hashMaps = virtualMetadataPopulator.getMap().get(relationshipType.getLeftLabel());
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otherItem = relationship.getRightItem();
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relationName = relationship.getRelationshipType().getLeftLabel();
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place = relationship.getLeftPlace();
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} else if (StringUtils.equals(relationshipType.getRightType().getLabel(), entityType)) {
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hashMaps = virtualMetadataPopulator.getMap().get(relationshipType.getRightLabel());
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otherItem = relationship.getLeftItem();
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relationName = relationship.getRelationshipType().getRightLabel();
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place = relationship.getRightPlace();
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} else {
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//No virtual metadata can be created
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return resultingMetadataValueList;
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}
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if (hashMaps != null && enableVirtualMetadata) {
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resultingMetadataValueList.addAll(handleRelationshipTypeMetadataMapping(context, item, hashMaps,
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otherItem, relationName,
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relationship.getID(), place));
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}
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RelationshipMetadataValue relationMetadataFromOtherItem =
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getRelationMetadataFromOtherItem(context, otherItem, relationName, relationship.getID(), place);
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if (relationMetadataFromOtherItem != null) {
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resultingMetadataValueList.add(relationMetadataFromOtherItem);
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}
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return resultingMetadataValueList;
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}
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//This method will retrieve a list of RelationshipMetadataValue objects based on the config passed along in the
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//hashmaps parameter. The beans will be used to retrieve the values for the RelationshipMetadataValue objects
|
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//and the keys of the hashmap will be used to construct the RelationshipMetadataValue object.
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private List<RelationshipMetadataValue> handleRelationshipTypeMetadataMapping(Context context, Item item,
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HashMap<String, VirtualMetadataConfiguration> hashMaps, Item otherItem, String relationName,
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Integer relationshipId, int place) throws SQLException {
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List<RelationshipMetadataValue> resultingMetadataValueList = new LinkedList<>();
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for (Map.Entry<String, VirtualMetadataConfiguration> entry : hashMaps.entrySet()) {
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String key = entry.getKey();
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VirtualMetadataConfiguration virtualBean = entry.getValue();
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for (String value : virtualBean.getValues(context, otherItem)) {
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RelationshipMetadataValue metadataValue = constructMetadataValue(context, key);
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if (metadataValue != null) {
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metadataValue = constructResultingMetadataValue(item, value, metadataValue, relationshipId);
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metadataValue.setUseForPlace(virtualBean.getUseForPlace());
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metadataValue.setPlace(place);
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if (StringUtils.isNotBlank(metadataValue.getValue())) {
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resultingMetadataValueList.add(metadataValue);
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}
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}
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}
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}
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return resultingMetadataValueList;
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}
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//This method will construct a RelationshipMetadataValue object with proper schema, element and qualifier based
|
||||
//on the key String parameter passed along to it
|
||||
private RelationshipMetadataValue constructMetadataValue(Context context, String key) {
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String[] splittedKey = key.split("\\.");
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RelationshipMetadataValue metadataValue = new RelationshipMetadataValue();
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String metadataSchema = splittedKey.length > 0 ? splittedKey[0] : null;
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String metadataElement = splittedKey.length > 1 ? splittedKey[1] : null;
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String metadataQualifier = splittedKey.length > 2 ? splittedKey[2] : null;
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MetadataField metadataField = null;
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try {
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metadataField = metadataFieldService
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.findByElement(context, metadataSchema, metadataElement, metadataQualifier);
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} catch (SQLException e) {
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log.error("Could not find element with MetadataSchema: " + metadataSchema +
|
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", MetadataElement: " + metadataElement + " and MetadataQualifier: " + metadataQualifier, e);
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return null;
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}
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if (metadataField == null) {
|
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log.error("A MetadataValue was attempted to construct with MetadataField for parameters: " +
|
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"metadataschema: {}, metadataelement: {}, metadataqualifier: {}",
|
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metadataSchema, metadataElement, metadataQualifier);
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return null;
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}
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metadataValue.setMetadataField(metadataField);
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metadataValue.setLanguage(Item.ANY);
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return metadataValue;
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}
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||||
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||||
|
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private RelationshipMetadataValue constructResultingMetadataValue(Item item, String value,
|
||||
RelationshipMetadataValue metadataValue,
|
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Integer relationshipId) {
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metadataValue.setValue(value);
|
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metadataValue.setAuthority(Constants.VIRTUAL_AUTHORITY_PREFIX + relationshipId);
|
||||
metadataValue.setConfidence(-1);
|
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metadataValue.setDSpaceObject(item);
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return metadataValue;
|
||||
}
|
||||
|
||||
|
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private RelationshipMetadataValue getRelationMetadataFromOtherItem(Context context, Item otherItem,
|
||||
String relationName,
|
||||
Integer relationshipId, int place) {
|
||||
RelationshipMetadataValue metadataValue = constructMetadataValue(context,
|
||||
MetadataSchemaEnum.RELATION
|
||||
.getName() + "." + relationName);
|
||||
if (metadataValue != null) {
|
||||
metadataValue.setAuthority(Constants.VIRTUAL_AUTHORITY_PREFIX + relationshipId);
|
||||
metadataValue.setValue(otherItem.getID().toString());
|
||||
metadataValue.setPlace(place);
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return metadataValue;
|
||||
}
|
||||
return null;
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||||
}
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||||
}
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||||
@@ -654,19 +654,6 @@ public interface ItemService
|
||||
*/
|
||||
boolean isInProgressSubmission(Context context, Item item) throws SQLException;
|
||||
|
||||
/**
|
||||
* This method retrieves a list of MetadataValue objects that get constructed from processing
|
||||
* the given Item's Relationships through the config given to the {@link VirtualMetadataPopulator}
|
||||
* @param item The Item that will be processed through it's Relationships
|
||||
* @param enableVirtualMetadata This parameter will determine whether the list of Relationship metadata
|
||||
* should be populated with metadata that is being generated through the
|
||||
* VirtualMetadataPopulator functionality or not
|
||||
* @return The list of MetadataValue objects constructed through the Relationships
|
||||
*/
|
||||
public List<RelationshipMetadataValue> getRelationshipMetadata(Item item, boolean enableVirtualMetadata);
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Get metadata for the DSpace Object in a chosen schema.
|
||||
* See <code>MetadataSchema</code> for more information about schemas.
|
||||
|
||||
@@ -0,0 +1,54 @@
|
||||
package org.dspace.content;
|
||||
|
||||
import static org.mockito.Mockito.when;
|
||||
|
||||
import java.util.LinkedList;
|
||||
|
||||
import org.dspace.content.service.RelationshipService;
|
||||
import org.dspace.core.Context;
|
||||
import org.junit.Before;
|
||||
import org.junit.Ignore;
|
||||
import org.junit.Test;
|
||||
import org.junit.runner.RunWith;
|
||||
import org.mockito.InjectMocks;
|
||||
import org.mockito.Mock;
|
||||
import org.mockito.runners.MockitoJUnitRunner;
|
||||
|
||||
@RunWith(MockitoJUnitRunner.class)
|
||||
public class RelationshipMetadataServiceTest {
|
||||
|
||||
@InjectMocks
|
||||
private RelationshipMetadataServiceImpl relationshipMetadataService;
|
||||
|
||||
@Mock
|
||||
private RelationshipService relationshipService;
|
||||
|
||||
@Mock
|
||||
private Item item;
|
||||
private Relationship firstRelationship;
|
||||
private Relationship secondRelationship;
|
||||
private LinkedList<Relationship> list;
|
||||
private Context context;
|
||||
|
||||
@Before
|
||||
public void init() {
|
||||
firstRelationship = new Relationship();
|
||||
secondRelationship = new Relationship();
|
||||
list = new LinkedList<>();
|
||||
list.add(firstRelationship);
|
||||
list.add(secondRelationship);
|
||||
}
|
||||
|
||||
@Test
|
||||
@Ignore
|
||||
public void testGetRelationshipMetadata() throws Exception {
|
||||
when(item.getMetadata()).thenReturn(new LinkedList<>());
|
||||
when(relationshipService.findByItem(context, item)).thenReturn(list);
|
||||
|
||||
|
||||
String t = "";
|
||||
relationshipMetadataService.getRelationshipMetadata(item, true);
|
||||
|
||||
|
||||
}
|
||||
}
|
||||
@@ -54,6 +54,7 @@
|
||||
<bean class="org.dspace.content.EntityTypeServiceImpl"/>
|
||||
<bean class="org.dspace.content.EntityServiceImpl"/>
|
||||
<bean class="org.dspace.content.RelationshipTypeServiceImpl"/>
|
||||
<bean class="org.dspace.content.RelationshipMetadataServiceImpl"/>
|
||||
|
||||
<bean class="org.dspace.content.authority.ChoiceAuthorityServiceImpl"/>
|
||||
<bean class="org.dspace.content.authority.MetadataAuthorityServiceImpl" lazy-init="true"/>
|
||||
|
||||
Reference in New Issue
Block a user