| /******************************************************************************* |
| * 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.PersistentType; |
| import org.eclipse.jpt.core.context.TypeMapping; |
| 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); |
| } |
| |
| |
| // ********** target entity ********** |
| |
| public String getTargetEntity() { |
| return (this.specifiedTargetEntity != null) ? this.specifiedTargetEntity : this.defaultTargetEntity; |
| } |
| |
| public String getSpecifiedTargetEntity() { |
| return this.specifiedTargetEntity; |
| } |
| |
| public void setSpecifiedTargetEntity(String targetEntity) { |
| String old = this.specifiedTargetEntity; |
| this.specifiedTargetEntity = targetEntity; |
| this.getResourceMapping().setTargetEntity(targetEntity); |
| this.firePropertyChanged(SPECIFIED_TARGET_ENTITY_PROPERTY, old, targetEntity); |
| } |
| |
| protected void setSpecifiedTargetEntity_(String targetEntity) { |
| String old = this.specifiedTargetEntity; |
| this.specifiedTargetEntity = targetEntity; |
| this.firePropertyChanged(SPECIFIED_TARGET_ENTITY_PROPERTY, old, targetEntity); |
| } |
| |
| public String getDefaultTargetEntity() { |
| return this.defaultTargetEntity; |
| } |
| |
| protected void setDefaultTargetEntity(String targetEntity) { |
| String old = this.defaultTargetEntity; |
| this.defaultTargetEntity = targetEntity; |
| this.firePropertyChanged(DEFAULT_TARGET_ENTITY_PROPERTY, old, targetEntity); |
| } |
| |
| public Entity getResolvedTargetEntity() { |
| return this.resolvedTargetEntity; |
| } |
| |
| protected void setResolvedTargetEntity(Entity entity) { |
| Entity old = this.resolvedTargetEntity; |
| this.resolvedTargetEntity = entity; |
| this.firePropertyChanged(RESOLVED_TARGET_ENTITY_PROPERTY, old, entity); |
| } |
| |
| |
| // ********** cascade ********** |
| |
| public JavaCascade getCascade() { |
| return this.cascade; |
| } |
| |
| |
| // ********** fetch ********** |
| |
| public FetchType getFetch() { |
| return (this.specifiedFetch != null) ? this.specifiedFetch : this.getDefaultFetch(); |
| } |
| |
| public FetchType getSpecifiedFetch() { |
| return this.specifiedFetch; |
| } |
| |
| public void setSpecifiedFetch(FetchType fetch) { |
| FetchType old = this.specifiedFetch; |
| this.specifiedFetch = fetch; |
| this.getResourceMapping().setFetch(FetchType.toJavaResourceModel(fetch)); |
| this.firePropertyChanged(SPECIFIED_FETCH_PROPERTY, old, fetch); |
| } |
| |
| protected void setSpecifiedFetch_(FetchType fetch) { |
| FetchType old = this.specifiedFetch; |
| this.specifiedFetch = fetch; |
| this.firePropertyChanged(SPECIFIED_FETCH_PROPERTY, old, fetch); |
| } |
| |
| |
| // ********** resource => context ********** |
| |
| @Override |
| public void initialize(JavaResourcePersistentAttribute jrpa) { |
| this.defaultTargetEntity = this.buildDefaultTargetEntity(jrpa); |
| super.initialize(jrpa); |
| } |
| |
| @Override |
| public void update(JavaResourcePersistentAttribute jrpa) { |
| this.setDefaultTargetEntity(this.buildDefaultTargetEntity(jrpa)); |
| super.update(jrpa); |
| } |
| |
| @Override |
| protected void initialize(T relationshipMappingAnnotation) { |
| this.specifiedFetch = this.buildFetch(relationshipMappingAnnotation); |
| this.cascade.initialize(relationshipMappingAnnotation); |
| this.specifiedTargetEntity = this.buildSpecifiedTargetEntity(relationshipMappingAnnotation); |
| this.resolvedTargetEntity = this.buildResolvedTargetEntity(relationshipMappingAnnotation); |
| } |
| |
| @Override |
| protected void update(T relationshipMappingAnnotation) { |
| super.update(relationshipMappingAnnotation); |
| this.setSpecifiedFetch_(this.buildFetch(relationshipMappingAnnotation)); |
| this.cascade.update(relationshipMappingAnnotation); |
| this.setSpecifiedTargetEntity_(this.buildSpecifiedTargetEntity(relationshipMappingAnnotation)); |
| this.setResolvedTargetEntity(this.buildResolvedTargetEntity(relationshipMappingAnnotation)); |
| } |
| |
| protected FetchType buildFetch(T relationshipMappingAnnotation) { |
| return FetchType.fromJavaResourceModel(relationshipMappingAnnotation.getFetch()); |
| } |
| |
| protected String buildSpecifiedTargetEntity(T relationshipMappingAnnotation) { |
| return relationshipMappingAnnotation.getTargetEntity(); |
| } |
| |
| protected abstract String buildDefaultTargetEntity(JavaResourcePersistentAttribute jrpa); |
| |
| protected Entity buildResolvedTargetEntity(T relationshipMappingAnnotation) { |
| String qualifiedTargetEntity = getDefaultTargetEntity(); |
| if (getSpecifiedTargetEntity() != null) { |
| qualifiedTargetEntity = relationshipMappingAnnotation.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; |
| } |
| |
| |
| // ********** RelationshipMapping implementation ********** |
| |
| public Entity getEntity() { |
| TypeMapping typeMapping = this.getTypeMapping(); |
| return (typeMapping instanceof Entity) ? (Entity) typeMapping : null; |
| } |
| |
| public String getJoinTableDefaultName() { |
| return MappingTools.buildJoinTableDefaultName(this); |
| } |
| |
| |
| // ********** convenience methods ********** |
| |
| protected 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> javaCandidateMappedByAttributeNames(Filter<String> filter) { |
| return StringTools.convertToJavaStringLiterals(this.candidateMappedByAttributeNames(filter)); |
| } |
| |
| } |