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/*******************************************************************************
* <copyright>
*
* Copyright (c) 2012 SAP AG and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Petya Sabeva - initial API, implementation and documentation
*
* </copyright>
*
*******************************************************************************/
package org.eclipse.jpt.jpadiagrameditor.ui.internal.feature;
import org.eclipse.graphiti.features.IFeatureProvider;
import org.eclipse.graphiti.features.context.ICreateConnectionContext;
import org.eclipse.graphiti.features.context.impl.AddConnectionContext;
import org.eclipse.graphiti.features.impl.AbstractCreateConnectionFeature;
import org.eclipse.graphiti.mm.pictograms.Anchor;
import org.eclipse.graphiti.mm.pictograms.Connection;
import org.eclipse.graphiti.mm.pictograms.Diagram;
import org.eclipse.jpt.jpa.core.JpaProject;
import org.eclipse.jpt.jpa.core.MappingKeys;
import org.eclipse.jpt.jpa.core.context.Entity;
import org.eclipse.jpt.jpa.core.context.MappedSuperclass;
import org.eclipse.jpt.jpa.core.context.PersistentType;
import org.eclipse.jpt.jpa.core.context.java.JavaSpecifiedPersistentAttribute;
import org.eclipse.jpt.jpa.core.context.java.JavaPersistentType;
import org.eclipse.jpt.jpa.core.context.persistence.ClassRef;
import org.eclipse.jpt.jpa.core.context.persistence.PersistenceUnit;
import org.eclipse.jpt.jpa.core.resource.java.EmbeddedAnnotation;
import org.eclipse.jpt.jpadiagrameditor.ui.internal.i18n.JPAEditorMessages;
import org.eclipse.jpt.jpadiagrameditor.ui.internal.modelintegration.util.ModelIntegrationUtil;
import org.eclipse.jpt.jpadiagrameditor.ui.internal.provider.IJPAEditorFeatureProvider;
import org.eclipse.jpt.jpadiagrameditor.ui.internal.provider.JPAEditorImageProvider;
import org.eclipse.jpt.jpadiagrameditor.ui.internal.relations.HasReferanceRelation;
import org.eclipse.jpt.jpadiagrameditor.ui.internal.relations.HasSingleReferenceRelation;
import org.eclipse.jpt.jpadiagrameditor.ui.internal.util.JPAEditorUtil;
import org.eclipse.jpt.jpadiagrameditor.ui.internal.util.JpaArtifactFactory;
public class EmbedSingleObjectFeature extends AbstractCreateConnectionFeature {
private JavaPersistentType embeddingEntity;
public EmbedSingleObjectFeature(IFeatureProvider fp) {
this(fp, JPAEditorMessages.EmbedSingleObjectFeature_EmbeddedFeatureName, JPAEditorMessages.EmbedSingleObjectFeature_EmbeddedFeatureDescription);
}
public EmbedSingleObjectFeature(IFeatureProvider fp, String name,
String description) {
super(fp, name, description);
}
public boolean canCreate(ICreateConnectionContext context) {
embeddingEntity = (JavaPersistentType)getPersistentType(context.getSourceAnchor());
JavaPersistentType embeddable = (JavaPersistentType)getPersistentType(context.getTargetAnchor());
if ((embeddingEntity == null) || (embeddable == null))
return false;
if (!JpaArtifactFactory.instance().hasEmbeddableAnnotation(embeddable))
return false;
if(JpaArtifactFactory.instance().hasEmbeddableAnnotation(embeddingEntity) &&
JPAEditorUtil.checkJPAFacetVersion(embeddable.getJpaProject(), JPAEditorUtil.JPA_PROJECT_FACET_10))
return false;
if(!JpaArtifactFactory.instance().hasEntityAnnotation(embeddingEntity) &&
!JpaArtifactFactory.instance().hasEmbeddableAnnotation(embeddingEntity))
return false;
return true;
}
public Connection create(ICreateConnectionContext context) {
JavaPersistentType embeddingEntity = (JavaPersistentType)getPersistentType(context.getSourceAnchor());
JavaPersistentType embeddable = (JavaPersistentType)getPersistentType(context.getTargetAnchor());
JavaSpecifiedPersistentAttribute embeddedAttribute = JPAEditorUtil.addAnnotatedAttribute(getFeatureProvider(), embeddingEntity, embeddable, false, null);
embeddedAttribute.setMappingKey(MappingKeys.EMBEDDED_ATTRIBUTE_MAPPING_KEY);
embeddedAttribute.getResourceAttribute().addAnnotation(EmbeddedAnnotation.ANNOTATION_NAME);
HasReferanceRelation rel = new HasSingleReferenceRelation(embeddingEntity, embeddable);
rel.setEmbeddedAnnotatedAttribute(embeddedAttribute);
AddHasReferenceRelationFeature ft = new AddHasReferenceRelationFeature(getFeatureProvider());
AddConnectionContext cont = new AddConnectionContext(context.getSourceAnchor(), context.getTargetAnchor());
cont.setNewObject(rel);
Connection connection = (Connection) ft.add(cont);
return connection;
}
public boolean canStartConnection(ICreateConnectionContext context) {
embeddingEntity = (JavaPersistentType)getPersistentType(context.getSourceAnchor());
if (embeddingEntity == null)
return false;
return true;
}
@Override
public String getCreateImageId() {
return JPAEditorImageProvider.ICON_EMBEDDED;
}
protected PersistentType getPersistentType(Anchor anchor) {
if (anchor != null) {
Object refObject =
getBusinessObjectForPictogramElement(anchor.getParent());
if (refObject instanceof PersistentType) {
return (PersistentType) refObject;
}
}
return null;
}
@Override
public IJPAEditorFeatureProvider getFeatureProvider() {
return (IJPAEditorFeatureProvider)super.getFeatureProvider();
}
@Override
public void startConnecting() {
super.startConnecting();
disableAllMappedSuperclasses();
}
@Override
public void attachedToSource(ICreateConnectionContext context) {
super.attachedToSource(context);
getFeatureProvider().setOriginalPersistentTypeColor();
disableUnvalidRelationTargets();
}
@Override
public void endConnecting() {
super.endConnecting();
getFeatureProvider().setOriginalPersistentTypeColor();
}
/**
* For each unvalid relationship's target, change the color of the respective
* java persistent type in gray to simulate disability of the persistent type.
*/
private void disableUnvalidRelationTargets(){
Diagram d = getDiagram();
JpaProject project = ModelIntegrationUtil.getProjectByDiagram(d.getName());
PersistenceUnit unit = project.getContextModelRoot().getPersistenceXml().
getRoot().getPersistenceUnits().iterator().next();
boolean isJPA10Project = JPAEditorUtil.checkJPAFacetVersion(embeddingEntity.getJpaProject(), JPAEditorUtil.JPA_PROJECT_FACET_10);
if(JpaArtifactFactory.instance().hasEntityAnnotation(embeddingEntity)
|| (!isJPA10Project && JpaArtifactFactory.instance().hasEmbeddableAnnotation(embeddingEntity))){
disableAllJPTsThatAreNotEmbeddables(unit);
}
else if(JpaArtifactFactory.instance().hasMappedSuperclassAnnotation(embeddingEntity)
|| (isJPA10Project && JpaArtifactFactory.instance().hasEmbeddableAnnotation(embeddingEntity))){
disableAllPersistenTypes(unit);
}
}
/**
* Disable all {@link MappedSuperclass}es and {@link Entity}s
* registered in the persistence unit.
* @param unit
*/
private void disableAllJPTsThatAreNotEmbeddables(PersistenceUnit unit) {
for (ClassRef classRef : unit.getClassRefs()) {
if (classRef.getJavaPersistentType() != null) {
final JavaPersistentType jpt = classRef.getJavaPersistentType();
if(JpaArtifactFactory.instance().hasEntityAnnotation(jpt) || JpaArtifactFactory.instance().hasMappedSuperclassAnnotation(jpt)){
getFeatureProvider().setGrayColor(jpt);
}
}
}
}
/**
* Disable all {@link MappedSuperclass}es
* registered in the persistence unit.
* @param unit
*/
private void disableAllMappedSuperclasses() {
Diagram d = getDiagram();
JpaProject project = ModelIntegrationUtil.getProjectByDiagram(d.getName());
PersistenceUnit unit = project.getContextModelRoot().getPersistenceXml().
getRoot().getPersistenceUnits().iterator().next();
boolean isJPA10Project = JPAEditorUtil.checkJPAFacetVersion(ModelIntegrationUtil.getProjectByDiagram(getDiagram().getName()), JPAEditorUtil.JPA_PROJECT_FACET_10);
for (ClassRef classRef : unit.getClassRefs()) {
if (classRef.getJavaPersistentType() != null) {
final JavaPersistentType jpt = classRef.getJavaPersistentType();
if(JpaArtifactFactory.instance().hasMappedSuperclassAnnotation(jpt) ||
(isJPA10Project && JpaArtifactFactory.instance().hasEmbeddableAnnotation(jpt))){
getFeatureProvider().setGrayColor(jpt);
}
}
}
}
/**
* Disable (color in gray) all {@link JavaPersistentType}s registered in the
* persistence unit.
* @param unit
*/
private void disableAllPersistenTypes(PersistenceUnit unit) {
for (ClassRef classRef : unit.getClassRefs()) {
if (classRef.getJavaPersistentType() != null) {
final JavaPersistentType jpt = classRef.getJavaPersistentType();
getFeatureProvider().setGrayColor(jpt);
}
}
}
}
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