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/*******************************************************************************
* Copyright (c) 2006, 2008 Oracle. 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:
* Oracle - initial API and implementation
******************************************************************************/
package org.eclipse.jpt.core.internal.context.java;
import java.util.Iterator;
import org.eclipse.jpt.core.MappingKeys;
import org.eclipse.jpt.core.context.Entity;
import org.eclipse.jpt.core.context.FetchType;
import org.eclipse.jpt.core.context.Fetchable;
import org.eclipse.jpt.core.context.PersistentType;
import org.eclipse.jpt.core.context.RelationshipMapping;
import org.eclipse.jpt.core.context.java.JavaPersistentAttribute;
import org.eclipse.jpt.core.context.java.JavaRelationshipMapping;
import org.eclipse.jpt.core.internal.context.MappingTools;
import org.eclipse.jpt.core.resource.java.JavaResourcePersistentAttribute;
import org.eclipse.jpt.core.resource.java.RelationshipMappingAnnotation;
import org.eclipse.jpt.utility.Filter;
import org.eclipse.jpt.utility.internal.StringTools;
import org.eclipse.jpt.utility.internal.iterators.EmptyIterator;
import org.eclipse.jpt.utility.internal.iterators.FilteringIterator;
public abstract class AbstractJavaRelationshipMapping<T extends RelationshipMappingAnnotation> extends AbstractJavaAttributeMapping<T>
implements JavaRelationshipMapping
{
protected String specifiedTargetEntity;
protected String defaultTargetEntity;
protected Entity resolvedTargetEntity;
protected final JavaCascade cascade;
protected FetchType specifiedFetch;
protected AbstractJavaRelationshipMapping(JavaPersistentAttribute parent) {
super(parent);
this.cascade = new JavaCascade(this);
}
public String getTargetEntity() {
return (this.getSpecifiedTargetEntity() == null) ? getDefaultTargetEntity() : this.getSpecifiedTargetEntity();
}
public String getSpecifiedTargetEntity() {
return this.specifiedTargetEntity;
}
public void setSpecifiedTargetEntity(String newSpecifiedTargetEntity) {
String oldSpecifiedTargetEntity = this.specifiedTargetEntity;
this.specifiedTargetEntity = newSpecifiedTargetEntity;
this.getMappingResource().setTargetEntity(newSpecifiedTargetEntity);
firePropertyChanged(RelationshipMapping.SPECIFIED_TARGET_ENTITY_PROPERTY, oldSpecifiedTargetEntity, newSpecifiedTargetEntity);
}
protected void setSpecifiedTargetEntity_(String newSpecifiedTargetEntity) {
String oldSpecifiedTargetEntity = this.specifiedTargetEntity;
this.specifiedTargetEntity = newSpecifiedTargetEntity;
firePropertyChanged(RelationshipMapping.SPECIFIED_TARGET_ENTITY_PROPERTY, oldSpecifiedTargetEntity, newSpecifiedTargetEntity);
}
public String getDefaultTargetEntity() {
return this.defaultTargetEntity;
}
protected void setDefaultTargetEntity(String newDefaultTargetEntity) {
String oldDefaultTargetEntity = this.defaultTargetEntity;
this.defaultTargetEntity = newDefaultTargetEntity;
firePropertyChanged(RelationshipMapping.DEFAULT_TARGET_ENTITY_PROPERTY, oldDefaultTargetEntity, newDefaultTargetEntity);
}
public Entity getResolvedTargetEntity() {
return this.resolvedTargetEntity;
}
protected void setResolvedTargetEntity(Entity newResolvedTargetEntity) {
Entity oldResolvedTargetEntity = this.resolvedTargetEntity;
this.resolvedTargetEntity = newResolvedTargetEntity;
firePropertyChanged(RelationshipMapping.RESOLVED_TARGET_ENTITY_PROPERTY, oldResolvedTargetEntity, newResolvedTargetEntity);
}
public JavaCascade getCascade() {
return this.cascade;
}
public FetchType getFetch() {
return (this.getSpecifiedFetch() == null) ? this.getDefaultFetch() : this.getSpecifiedFetch();
}
public FetchType getSpecifiedFetch() {
return this.specifiedFetch;
}
public void setSpecifiedFetch(FetchType newSpecifiedFetch) {
FetchType oldFetch = this.specifiedFetch;
this.specifiedFetch = newSpecifiedFetch;
this.getMappingResource().setFetch(FetchType.toJavaResourceModel(newSpecifiedFetch));
firePropertyChanged(Fetchable.SPECIFIED_FETCH_PROPERTY, oldFetch, newSpecifiedFetch);
}
protected void setSpecifiedFetch_(FetchType newSpecifiedFetch) {
FetchType oldFetch = this.specifiedFetch;
this.specifiedFetch = newSpecifiedFetch;
firePropertyChanged(Fetchable.SPECIFIED_FETCH_PROPERTY, oldFetch, newSpecifiedFetch);
}
@Override
public void initializeFromResource(JavaResourcePersistentAttribute resourcePersistentAttribute) {
this.defaultTargetEntity = this.defaultTargetEntity(resourcePersistentAttribute);
super.initializeFromResource(resourcePersistentAttribute);
}
@Override
public void update(JavaResourcePersistentAttribute resourcePersistentAttribute) {
this.setDefaultTargetEntity(this.defaultTargetEntity(resourcePersistentAttribute));
super.update(resourcePersistentAttribute);
}
@Override
protected void initialize(T relationshipMapping) {
this.specifiedFetch = this.fetch(relationshipMapping);
this.cascade.initialize(relationshipMapping);
this.specifiedTargetEntity = this.specifiedTargetEntity(relationshipMapping);
this.resolvedTargetEntity = this.resolveTargetEntity(relationshipMapping);
}
@Override
protected void update(T relationshipMapping) {
super.update(relationshipMapping);
this.setSpecifiedFetch_(this.fetch(relationshipMapping));
this.cascade.update(relationshipMapping);
this.setSpecifiedTargetEntity_(this.specifiedTargetEntity(relationshipMapping));
this.setResolvedTargetEntity(this.resolveTargetEntity(relationshipMapping));
}
protected FetchType fetch(T relationshipMapping) {
return FetchType.fromJavaResourceModel(relationshipMapping.getFetch());
}
protected String specifiedTargetEntity(T relationshipMapping) {
return relationshipMapping.getTargetEntity();
}
protected abstract String defaultTargetEntity(JavaResourcePersistentAttribute resourcePersistentAttribute);
protected Entity resolveTargetEntity(T relationshipMapping) {
String qualifiedTargetEntity = getDefaultTargetEntity();
if (getSpecifiedTargetEntity() != null) {
qualifiedTargetEntity = relationshipMapping.getFullyQualifiedTargetEntity();
}
if (qualifiedTargetEntity == null) {
return null;
}
PersistentType persistentType = getPersistenceUnit().getPersistentType(qualifiedTargetEntity);
if (persistentType != null && persistentType.getMappingKey() == MappingKeys.ENTITY_TYPE_MAPPING_KEY) {
return (Entity) persistentType.getMapping();
}
return null;
}
public Entity getEntity() {
if (getTypeMapping() instanceof Entity) {
return (Entity) getTypeMapping();
}
return null;
}
public Iterator<String> allTargetEntityAttributeNames() {
Entity targetEntity = this.getResolvedTargetEntity();
return (targetEntity == null) ? EmptyIterator.<String> instance() : targetEntity.getPersistentType().allAttributeNames();
}
public Iterator<String> candidateMappedByAttributeNames() {
return this.allTargetEntityAttributeNames();
}
protected Iterator<String> candidateMappedByAttributeNames(Filter<String> filter) {
return new FilteringIterator<String, String>(this.candidateMappedByAttributeNames(), filter);
}
protected Iterator<String> quotedCandidateMappedByAttributeNames(Filter<String> filter) {
return StringTools.quote(this.candidateMappedByAttributeNames(filter));
}
// ********** static methods **********
public boolean targetEntityIsValid(String targetEntity) {
return MappingTools.targetEntityIsValid(targetEntity);
}
}
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