DSC-1561 extend RelatedEntityItemEnhancer to manage a list of metadat…

…a to use as source and a list of related item metadata from which extract the enhanced metadata
abollini · Mar 1, 2024 · 52ef192 · 52ef192
1 parent 96a5cbb
commit 52ef192
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Showing 6 changed files with 284 additions and 109 deletions.
diff --git a/dspace-api/src/main/java/org/dspace/content/enhancer/impl/RelatedEntityItemEnhancer.java b/dspace-api/src/main/java/org/dspace/content/enhancer/impl/RelatedEntityItemEnhancer.java
@@ -57,12 +57,12 @@ public class RelatedEntityItemEnhancer extends AbstractItemEnhancer {
     /**
      * the metadata used to navigate the relation, i.e. dc.contributor.author
      */
-    private String sourceItemMetadataField;
+    private List<String> sourceItemMetadataFields;
 
     /**
      * the metadata that is copied from the linked entity, i.e. person.identifier.orcid
      */
-    private String relatedItemMetadataField;
+    private List<String> relatedItemMetadataFields;
 
     @Override
     public boolean canEnhance(Context context, Item item) {
@@ -166,16 +166,10 @@ private Map<String, List<MetadataValueDTO>> getToBeVirtualMetadata(Context conte
                 mvRelated.setValue(PLACEHOLDER_PARENT_METADATA_VALUE);
                 tobeVirtualMetadata.add(mvRelated);
             } else {
-                List<MetadataValue> relatedItemMetadataValues = getMetadataValues(relatedItem,
-                        relatedItemMetadataField);
-                if (relatedItemMetadataValues.isEmpty()) {
-                    MetadataValueDTO mvRelated = new MetadataValueDTO();
-                    mvRelated.setSchema(VIRTUAL_METADATA_SCHEMA);
-                    mvRelated.setElement(VIRTUAL_METADATA_ELEMENT);
-                    mvRelated.setQualifier(getVirtualQualifier());
-                    mvRelated.setValue(PLACEHOLDER_PARENT_METADATA_VALUE);
-                    tobeVirtualMetadata.add(mvRelated);
-                } else {
+                boolean foundAtLeastOneValue = false;
+                for (String relatedItemMetadataField : relatedItemMetadataFields) {
+                    List<MetadataValue> relatedItemMetadataValues = getMetadataValues(relatedItem,
+                            relatedItemMetadataField);
                     for (MetadataValue relatedItemMetadataValue : relatedItemMetadataValues) {
                         MetadataValueDTO mvRelated = new MetadataValueDTO();
                         mvRelated.setSchema(VIRTUAL_METADATA_SCHEMA);
@@ -188,8 +182,17 @@ private Map<String, List<MetadataValueDTO>> getToBeVirtualMetadata(Context conte
                             mvRelated.setConfidence(Choices.CF_ACCEPTED);
                         }
                         tobeVirtualMetadata.add(mvRelated);
+                        foundAtLeastOneValue = true;
                     }
                 }
+                if (!foundAtLeastOneValue) {
+                    MetadataValueDTO mvRelated = new MetadataValueDTO();
+                    mvRelated.setSchema(VIRTUAL_METADATA_SCHEMA);
+                    mvRelated.setElement(VIRTUAL_METADATA_ELEMENT);
+                    mvRelated.setQualifier(getVirtualQualifier());
+                    mvRelated.setValue(PLACEHOLDER_PARENT_METADATA_VALUE);
+                    tobeVirtualMetadata.add(mvRelated);
+                }
             }
             tobeVirtualMetadataMap.put(authority, tobeVirtualMetadata);
         }
@@ -225,8 +228,10 @@ private List<MetadataValue> getObsoleteVirtualFields(Item item) {
     }
 
     private Set<String> getVirtualSources(Item item) {
-        return itemService.getMetadataByMetadataString(item, sourceItemMetadataField).stream()
-                .filter(mv -> UUIDUtils.fromString(mv.getAuthority()) != null).map(mv -> mv.getAuthority())
+        return sourceItemMetadataFields.stream()
+                .flatMap(field -> itemService.getMetadataByMetadataString(item, field).stream())
+                .filter(mv -> UUIDUtils.fromString(mv.getAuthority()) != null)
+                .map(mv -> mv.getAuthority())
                 .collect(Collectors.toSet());
     }
 
@@ -276,28 +281,32 @@ private boolean performEnhancement(Context context, Item item) throws SQLExcepti
         Map<String, List<MetadataValue>> currentVirtualsMap = getCurrentVirtualsMap(item);
         Set<String> virtualSources = getVirtualSources(item);
         for (String authority : virtualSources) {
+            boolean foundAtLeastOne = false;
             if (!currentVirtualsMap.containsKey(authority)) {
+                result = true;
                 Item relatedItem = findRelatedEntityItem(context, authority);
                 if (relatedItem == null) {
                     addVirtualField(context, item, PLACEHOLDER_PARENT_METADATA_VALUE, null, null, Choices.CF_UNSET);
                     addVirtualSourceField(context, item, authority);
                     continue;
                 }
 
-                List<MetadataValue> relatedItemMetadataValues = getMetadataValues(relatedItem,
-                        relatedItemMetadataField);
-                if (relatedItemMetadataValues.isEmpty()) {
+                for (String relatedItemMetadataField : relatedItemMetadataFields) {
+                    List<MetadataValue> relatedItemMetadataValues = getMetadataValues(relatedItem,
+                            relatedItemMetadataField);
+                    for (MetadataValue relatedItemMetadataValue : relatedItemMetadataValues) {
+                        foundAtLeastOne = true;
+                        addVirtualField(context, item, relatedItemMetadataValue.getValue(),
+                                relatedItemMetadataValue.getAuthority(), relatedItemMetadataValue.getLanguage(),
+                                relatedItemMetadataValue.getConfidence());
+                        addVirtualSourceField(context, item, authority);
+                    }
+                }
+                if (!foundAtLeastOne) {
                     addVirtualField(context, item, PLACEHOLDER_PARENT_METADATA_VALUE, null, null, Choices.CF_UNSET);
                     addVirtualSourceField(context, item, authority);
                     continue;
                 }
-                for (MetadataValue relatedItemMetadataValue : relatedItemMetadataValues) {
-                    addVirtualField(context, item, relatedItemMetadataValue.getValue(),
-                            relatedItemMetadataValue.getAuthority(), relatedItemMetadataValue.getLanguage(),
-                            relatedItemMetadataValue.getConfidence());
-                    addVirtualSourceField(context, item, authority);
-                }
-                result = true;
             }
         }
         return result;
@@ -340,12 +349,28 @@ public void setSourceEntityType(String sourceEntityType) {
         this.sourceEntityType = sourceEntityType;
     }
 
+    @Deprecated
     public void setSourceItemMetadataField(String sourceItemMetadataField) {
-        this.sourceItemMetadataField = sourceItemMetadataField;
+        LOGGER.warn(
+                "RelatedEntityItemEnhancer configured using the old single source item metadata field, "
+                + "please update the configuration to use the list");
+        this.sourceItemMetadataFields = List.of(sourceItemMetadataField);
     }
 
+    @Deprecated
     public void setRelatedItemMetadataField(String relatedItemMetadataField) {
-        this.relatedItemMetadataField = relatedItemMetadataField;
+        LOGGER.warn(
+                "RelatedEntityItemEnhancer configured using the old single related item metadata field, "
+                + "please update the configuration to use the list");
+        this.relatedItemMetadataFields = List.of(relatedItemMetadataField);
+    }
+
+    public void setRelatedItemMetadataFields(List<String> relatedItemMetadataFields) {
+        this.relatedItemMetadataFields = relatedItemMetadataFields;
+    }
+
+    public void setSourceItemMetadataFields(List<String> sourceItemMetadataFields) {
+        this.sourceItemMetadataFields = sourceItemMetadataFields;
     }
 
 }
diff --git a/...ce-api/src/test/data/dspaceFolder/config/spring/api/extra-metadata-enhancers-for-test.xml b/...ce-api/src/test/data/dspaceFolder/config/spring/api/extra-metadata-enhancers-for-test.xml
@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+
+    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/
+
+-->
+<beans xmlns="http://www.springframework.org/schema/beans"
+       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+       xmlns:context="http://www.springframework.org/schema/context"
+       xmlns:util="http://www.springframework.org/schema/util"
+       xsi:schemaLocation="http://www.springframework.org/schema/beans
+           http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
+           http://www.springframework.org/schema/context
+           http://www.springframework.org/schema/context/spring-context-2.5.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd"
+>
+
+    <context:annotation-config />
+
+    <bean class="org.dspace.content.enhancer.impl.RelatedEntityItemEnhancer" >
+        <property name="sourceEntityType" value="TestEntity" />
+        <property name="sourceItemMetadataFields">
+            <list>
+                <value>dc.contributor.author</value>
+                <value>dc.contributor.editor</value>
+            </list>
+        </property>
+        <property name="relatedItemMetadataFields">
+            <list>
+                <value>person.affiliation.name</value>
+                <value>person.identifier.orcid</value>
+            </list>
+        </property>
+        <property name="virtualQualifier" value="testmultival" />
+    </bean>
+
+</beans>