XWIKI-22571: Backlinks update changes an absolute reference to the mo…

…ved page into one relative to the current wiki

  * Provide implementations for  relative
    ResourceReferenceEntityReference resolvers and tests

xwiki-platform-core/xwiki-platform-model/xwiki-platform-model-api/src/test/java/org/xwiki/model/internal/reference/RelativeStringEntityReferenceResolverTest.java

@@ -22,6 +22,7 @@
 import org.junit.jupiter.api.Test;
 import org.xwiki.model.EntityType;
 import org.xwiki.model.reference.EntityReference;
+import org.xwiki.model.reference.WikiReference;
 import org.xwiki.test.annotation.ComponentList;
 import org.xwiki.test.junit5.mockito.ComponentTest;
 import org.xwiki.test.junit5.mockito.InjectMockComponents;
@@ -70,5 +71,19 @@ public void resolveDocumentReferenceWithBaseReference()
         assertNull(reference.extractReference(EntityType.WIKI));
         assertEquals("space", reference.extractReference(EntityType.SPACE).getName());
         assertNull(reference.extractReference(EntityType.DOCUMENT));
+
+        reference =
+            this.resolver.resolve("", EntityType.DOCUMENT, new EntityReference("wikiFoo", EntityType.WIKI));
+
+        assertEquals("wikiFoo", reference.extractReference(EntityType.WIKI).getName());
+        assertNull(reference.extractReference(EntityType.SPACE));
+        assertNull(reference.extractReference(EntityType.DOCUMENT));
+
+        reference =
+            this.resolver.resolve("", EntityType.DOCUMENT, new WikiReference("wikiFoo"));
+
+        assertEquals("wikiFoo", reference.extractReference(EntityType.WIKI).getName());
+        assertNull(reference.extractReference(EntityType.SPACE));
+        assertNull(reference.extractReference(EntityType.DOCUMENT));
     }
 }

xwiki-platform-core/xwiki-platform-model/xwiki-platform-model-api/src/test/java/org/xwiki/model/reference/WikiReferenceTest.java

@@ -24,6 +24,7 @@
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
 /**
  * Unit tests for {@link WikiReference}.
@@ -49,4 +50,11 @@ public void testInvalidParent()
             () -> new WikiReference(new EntityReference("wiki", EntityType.WIKI, badParent)));
         assertEquals("Unexpected parent [" + badParent + "] in a wiki reference", expected.getMessage());
     }
+
+    @Test
+    void instanceOf()
+    {
+        assertTrue(new WikiReference("foo") instanceof WikiReference);
+        assertTrue(new WikiReference("foo") instanceof EntityReference);
+    }
 }

xwiki-platform-core/xwiki-platform-rendering/xwiki-platform-rendering-xwiki/src/main/java/org/xwiki/rendering/internal/resolver/AbstractRelativeResourceReferenceEntityReferenceResolver.java

@@ -19,6 +19,8 @@
  */
 package org.xwiki.rendering.internal.resolver;
 
+import java.util.List;
+
 import javax.inject.Inject;
 import javax.inject.Named;
 
@@ -29,7 +31,7 @@
 import org.xwiki.rendering.listener.reference.ResourceType;
 
 /**
- * Convert document resource reference into entity reference.
+ * Abstract class for all relative resource reference resolvers.
  *
  * @version $Id$
  * @since 17.0.0RC1
@@ -39,21 +41,84 @@ public abstract class AbstractRelativeResourceReferenceEntityReferenceResolver
 {
     @Inject
     @Named("relative")
-    private EntityReferenceResolver<String> relativeReferenceResolver;
+    protected EntityReferenceResolver<String> relativeReferenceResolver;
 
     /**
-     * Default constructor.
+     * @param type the resource type that this resolver will support
      */
-    public AbstractRelativeResourceReferenceEntityReferenceResolver(ResourceType type)
+    protected AbstractRelativeResourceReferenceEntityReferenceResolver(ResourceType type)
     {
         super(type);
     }
 
+    @Override
+    public EntityReference resolve(ResourceReference resourceReference, EntityType entityType, Object... parameters)
+    {
+        if (resourceReference == null) {
+            return null;
+        }
+
+        if (this.resourceType != null && !resourceReference.getType().equals(this.resourceType)) {
+            throw new IllegalArgumentException(
+                String.format("You must pass a resource reference of type [%s]. [%s] was passed", this.resourceType,
+                    resourceReference));
+        }
+
+        EntityReference entityReference;
+        EntityReference baseReference = getBaseReference(resourceReference, parameters);
+
+        if (resourceReference.isTyped()) {
+            entityReference = resolveTyped(resourceReference, baseReference);
+        } else {
+            entityReference = resolveUntyped(resourceReference, baseReference);
+        }
+
+        return entityReference;
+    }
+
+    @Override
+    protected EntityReference getBaseReference(ResourceReference resourceReference, Object... parameters)
+    {
+        EntityReference baseReference =
+            (parameters.length > 0 && parameters[0] instanceof EntityReference entityReference)
+            ? entityReference : null;
+
+        if (!resourceReference.getBaseReferences().isEmpty()) {
+            // If the passed reference has a base reference, resolve it first with a relative resolver (it should
+            // normally be absolute but who knows what the API caller has specified...)
+            baseReference = resolveBaseReference(resourceReference.getBaseReferences(), baseReference);
+        }
+
+        return baseReference;
+    }
+
+    @Override
+    protected EntityReference resolveBaseReference(List<String> baseReferences, EntityReference defaultBaseReference)
+    {
+        EntityReference resolvedBaseReference = defaultBaseReference;
+        for (String baseReference : baseReferences) {
+            resolvedBaseReference =
+                this.relativeReferenceResolver.resolve(baseReference, EntityType.DOCUMENT, resolvedBaseReference);
+        }
+
+        return resolvedBaseReference;
+    }
+
+    @Override
+    protected EntityReference resolveUntyped(ResourceReference resourceReference, EntityReference baseReference)
+    {
+        return resolveTyped(resourceReference, baseReference);
+    }
+
     @Override
     protected EntityReference resolveTyped(ResourceReference resourceReference, EntityReference baseReference)
     {
-        return this.relativeReferenceResolver.resolve(resourceReference.getReference(), getEntityType());
+        return this.relativeReferenceResolver.resolve(resourceReference.getReference(), getEntityType(), baseReference);
     }
 
-    public abstract EntityType getEntityType();
+    /**
+     *
+     * @return the entity type of the {@link EntityReference} this resolver produces.
+     */
+    protected abstract EntityType getEntityType();
 }

xwiki-platform-core/xwiki-platform-rendering/xwiki-platform-rendering-xwiki/src/main/java/org/xwiki/rendering/internal/resolver/RelativeAttachmentResourceReferenceEntityReferenceResolver.java

@@ -19,11 +19,18 @@
  */
 package org.xwiki.rendering.internal.resolver;
 
+import javax.inject.Inject;
 import javax.inject.Named;
 import javax.inject.Singleton;
 
+import org.apache.commons.lang3.StringUtils;
 import org.xwiki.component.annotation.Component;
 import org.xwiki.model.EntityType;
+import org.xwiki.model.reference.AttachmentReference;
+import org.xwiki.model.reference.AttachmentReferenceResolver;
+import org.xwiki.model.reference.DocumentReference;
+import org.xwiki.model.reference.EntityReference;
+import org.xwiki.rendering.listener.reference.ResourceReference;
 import org.xwiki.rendering.listener.reference.ResourceType;
 
 /**
@@ -38,14 +45,55 @@
 public class RelativeAttachmentResourceReferenceEntityReferenceResolver
     extends AbstractRelativeResourceReferenceEntityReferenceResolver
 {
+    @Inject
+    private AttachmentReferenceResolver<EntityReference> defaultReferenceAttachmentReferenceResolver;
+
+    /**
+     * Default constructor.
+     */
     public RelativeAttachmentResourceReferenceEntityReferenceResolver()
     {
         super(ResourceType.ATTACHMENT);
     }
 
     @Override
-    public EntityType getEntityType()
+    protected EntityType getEntityType()
     {
         return EntityType.ATTACHMENT;
     }
+
+    @Override
+    protected EntityReference resolveTyped(ResourceReference resourceReference, EntityReference baseReference)
+    {
+        if (StringUtils.isEmpty(resourceReference.getReference())) {
+            return null;
+        }
+
+        // Get relative reference
+        EntityReference relativeReference =
+            this.relativeReferenceResolver
+                .resolve(resourceReference.getReference(), EntityType.ATTACHMENT, baseReference);
+
+        EntityReference result = relativeReference;
+        if (relativeReference.extractReference(EntityType.WIKI) != null) {
+            // Resolve full reference
+            AttachmentReference attachmentReference =
+                this.defaultReferenceAttachmentReferenceResolver.resolve(relativeReference, baseReference);
+
+            // See if the resolved (terminal or WebHome) document exists and, if so, use it.
+            DocumentReference documentReference = attachmentReference.getDocumentReference();
+
+            // Take care of fallback if needed
+            DocumentReference finalDocumentReference =
+                resolveDocumentReference(relativeReference.getParent(), documentReference, baseReference);
+            // Also use that resolution if the relative reference doesn't contain any document, even if it doesn't
+            // exists, to not produce incorrect references.
+            if (finalDocumentReference != documentReference
+                || relativeReference.extractReference(EntityType.DOCUMENT) == null) {
+                result = new AttachmentReference(attachmentReference.getName(), finalDocumentReference);
+            }
+        }
+
+        return result;
+    }
 }

xwiki-platform-core/xwiki-platform-rendering/xwiki-platform-rendering-xwiki/src/main/java/org/xwiki/rendering/internal/resolver/RelativeDocumentResourceReferenceEntityReferenceResolver.java

@@ -19,11 +19,17 @@
  */
 package org.xwiki.rendering.internal.resolver;
 
+import javax.inject.Inject;
 import javax.inject.Named;
 import javax.inject.Singleton;
 
+import org.apache.commons.lang3.StringUtils;
 import org.xwiki.component.annotation.Component;
 import org.xwiki.model.EntityType;
+import org.xwiki.model.reference.DocumentReference;
+import org.xwiki.model.reference.DocumentReferenceResolver;
+import org.xwiki.model.reference.EntityReference;
+import org.xwiki.rendering.listener.reference.ResourceReference;
 import org.xwiki.rendering.listener.reference.ResourceType;
 
 /**
@@ -38,14 +44,47 @@
 public class RelativeDocumentResourceReferenceEntityReferenceResolver
     extends AbstractRelativeResourceReferenceEntityReferenceResolver
 {
+    @Inject
+    private DocumentReferenceResolver<String> defaultStringDocumentReferenceResolver;
+
+    /**
+     * Default constructor.
+     */
     public RelativeDocumentResourceReferenceEntityReferenceResolver()
     {
         super(ResourceType.DOCUMENT);
     }
 
     @Override
-    public EntityType getEntityType()
+    protected EntityType getEntityType()
     {
         return EntityType.DOCUMENT;
     }
+
+    @Override
+    protected EntityReference resolveUntyped(ResourceReference resourceReference, EntityReference baseReference)
+    {
+        // If the reference is empty fallback on typed logic
+        if (StringUtils.isEmpty(resourceReference.getReference())) {
+            return resolveTyped(resourceReference, baseReference);
+        }
+
+        // Get relative reference
+        EntityReference relativeReference =
+            this.relativeReferenceResolver.resolve(resourceReference.getReference(), EntityType.DOCUMENT,
+                baseReference);
+
+        EntityReference result = relativeReference;
+        if (relativeReference.extractReference(EntityType.WIKI) != null) {
+            // Resolve the full document reference
+            // We don't start from the previously parsed relative reference to not loose "." prefixed reference meaning
+            DocumentReference reference =
+                this.defaultStringDocumentReferenceResolver.resolve(resourceReference.getReference(), baseReference);
+
+            // Take care of fallback if needed
+            result = resolveDocumentReference(relativeReference, reference, baseReference);
+        }
+
+        return result;
+    }
 }

xwiki-platform-core/xwiki-platform-rendering/xwiki-platform-rendering-xwiki/src/main/java/org/xwiki/rendering/internal/resolver/RelativePageAttachmentResourceReferenceEntityReferenceResolver.java

@@ -39,13 +39,16 @@
 public class RelativePageAttachmentResourceReferenceEntityReferenceResolver
     extends AbstractRelativeResourceReferenceEntityReferenceResolver
 {
+    /**
+     * Default constructor.
+     */
     public RelativePageAttachmentResourceReferenceEntityReferenceResolver()
     {
         super(ResourceType.PAGE_ATTACHMENT);
     }
 
     @Override
-    public EntityType getEntityType()
+    protected EntityType getEntityType()
     {
         return EntityType.PAGE_ATTACHMENT;
     }

xwiki-platform-core/xwiki-platform-rendering/xwiki-platform-rendering-xwiki/src/main/java/org/xwiki/rendering/internal/resolver/RelativePageResourceReferenceEntityReferenceResolver.java

@@ -38,13 +38,16 @@
 public class RelativePageResourceReferenceEntityReferenceResolver
     extends AbstractRelativeResourceReferenceEntityReferenceResolver
 {
+    /**
+     * Default constructor.
+     */
     public RelativePageResourceReferenceEntityReferenceResolver()
     {
         super(ResourceType.PAGE);
     }
 
     @Override
-    public EntityType getEntityType()
+    protected EntityType getEntityType()
     {
         return EntityType.PAGE;
     }

xwiki-platform-core/xwiki-platform-rendering/xwiki-platform-rendering-xwiki/src/main/java/org/xwiki/rendering/internal/resolver/RelativeSpaceResourceReferenceEntityReferenceResolver.java

@@ -38,13 +38,16 @@
 public class RelativeSpaceResourceReferenceEntityReferenceResolver
     extends AbstractRelativeResourceReferenceEntityReferenceResolver
 {
+    /**
+     * Default constructor.
+     */
     public RelativeSpaceResourceReferenceEntityReferenceResolver()
     {
         super(ResourceType.SPACE);
     }
 
     @Override
-    public EntityType getEntityType()
+    protected EntityType getEntityType()
     {
         return EntityType.SPACE;
     }