| /******************************************************************************* |
| * 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.orm; |
| |
| import java.util.Iterator; |
| import org.eclipse.jpt.core.MappingKeys; |
| import org.eclipse.jpt.core.context.AttributeMapping; |
| 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.orm.OrmPersistentAttribute; |
| import org.eclipse.jpt.core.context.orm.OrmRelationshipMapping; |
| import org.eclipse.jpt.core.internal.context.MappingTools; |
| import org.eclipse.jpt.core.resource.java.JavaResourcePersistentAttribute; |
| import org.eclipse.jpt.core.resource.orm.XmlRelationshipMapping; |
| import org.eclipse.jpt.utility.internal.iterators.EmptyIterator; |
| |
| |
| public abstract class AbstractOrmRelationshipMapping<T extends XmlRelationshipMapping> extends AbstractOrmAttributeMapping<T> |
| implements OrmRelationshipMapping |
| { |
| |
| protected String specifiedTargetEntity; |
| |
| protected String defaultTargetEntity; |
| |
| protected Entity resolvedTargetEntity; |
| |
| protected FetchType specifiedFetch; |
| |
| protected final OrmCascade cascade; |
| |
| |
| protected AbstractOrmRelationshipMapping(OrmPersistentAttribute parent) { |
| super(parent); |
| this.cascade = new OrmCascade(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; |
| getAttributeMapping().setTargetEntity(newSpecifiedTargetEntity); |
| firePropertyChanged(SPECIFIED_TARGET_ENTITY_PROPERTY, oldSpecifiedTargetEntity, newSpecifiedTargetEntity); |
| } |
| |
| protected void setSpecifiedTargetEntity_(String newSpecifiedTargetEntity) { |
| String oldSpecifiedTargetEntity = this.specifiedTargetEntity; |
| this.specifiedTargetEntity = newSpecifiedTargetEntity; |
| firePropertyChanged(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(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(RESOLVED_TARGET_ENTITY_PROPERTY, oldResolvedTargetEntity, newResolvedTargetEntity); |
| } |
| |
| 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.getAttributeMapping().setFetch(FetchType.toOrmResourceModel(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); |
| } |
| |
| public OrmCascade getCascade() { |
| return this.cascade; |
| } |
| |
| |
| @Override |
| public void initializeFromXmlRelationshipMapping(OrmRelationshipMapping oldMapping) { |
| super.initializeFromXmlRelationshipMapping(oldMapping); |
| setSpecifiedTargetEntity(oldMapping.getSpecifiedTargetEntity()); |
| setSpecifiedFetch(oldMapping.getSpecifiedFetch()); |
| getCascade().initializeFrom(oldMapping.getCascade()); |
| //TODO should we set the fetch type from a BasicMapping?? |
| } |
| |
| public Iterator<String> allTargetEntityAttributeNames() { |
| Entity targetEntity = this.getResolvedTargetEntity(); |
| return (targetEntity == null) ? EmptyIterator.<String> instance() : targetEntity.getPersistentType().allAttributeNames(); |
| } |
| |
| public Iterator<String> candidateMappedByAttributeNames() { |
| return this.allTargetEntityAttributeNames(); |
| } |
| |
| public Entity getEntity() { |
| if (getTypeMapping() instanceof Entity) { |
| return (Entity) getTypeMapping(); |
| } |
| return null; |
| } |
| |
| public boolean targetEntityIsValid(String targetEntity) { |
| return MappingTools.targetEntityIsValid(targetEntity); |
| } |
| |
| @Override |
| public void initialize(T relationshipMapping) { |
| super.initialize(relationshipMapping); |
| this.specifiedTargetEntity = relationshipMapping.getTargetEntity(); |
| this.defaultTargetEntity = this.defaultTargetEntity(); |
| this.resolvedTargetEntity = this.resolveTargetEntity(); |
| this.specifiedFetch = this.specifiedFetch(relationshipMapping); |
| this.cascade.initialize(relationshipMapping); |
| } |
| |
| @Override |
| public void update(T relationshipMapping) { |
| super.update(relationshipMapping); |
| this.setSpecifiedTargetEntity_(relationshipMapping.getTargetEntity()); |
| this.setDefaultTargetEntity(this.defaultTargetEntity()); |
| this.setResolvedTargetEntity(this.resolveTargetEntity()); |
| this.setSpecifiedFetch_(this.specifiedFetch(relationshipMapping)); |
| this.cascade.update(relationshipMapping); |
| } |
| |
| protected FetchType specifiedFetch(XmlRelationshipMapping relationshipMapping) { |
| return FetchType.fromOrmResourceModel(relationshipMapping.getFetch()); |
| } |
| |
| protected RelationshipMapping javaRelationshipMapping() { |
| if (findJavaPersistentAttribute() == null) { |
| return null; |
| } |
| AttributeMapping javaAttributeMapping = findJavaPersistentAttribute().getMapping(); |
| if (javaAttributeMapping instanceof RelationshipMapping) { |
| return ((RelationshipMapping) javaAttributeMapping); |
| } |
| return null; |
| } |
| |
| protected String defaultTargetEntity() { |
| RelationshipMapping javaMapping = javaRelationshipMapping(); |
| if (javaMapping != null) { |
| if (getPersistentAttribute().isVirtual() && !getTypeMapping().isMetadataComplete()) { |
| return javaMapping.getTargetEntity(); |
| } |
| } |
| if (findJavaPersistentAttribute() != null) { |
| return defaultTargetEntity(findJavaPersistentAttribute().getResourcePersistentAttribute()); |
| } |
| return null; |
| } |
| |
| protected abstract String defaultTargetEntity(JavaResourcePersistentAttribute persistentAttributeResource); |
| |
| protected Entity resolveTargetEntity() { |
| if (getTargetEntity() == null) { |
| return null; |
| } |
| PersistentType persistentType = getTargetPersistentType(); |
| if (persistentType != null && persistentType.getMappingKey() == MappingKeys.ENTITY_TYPE_MAPPING_KEY) { |
| return (Entity) persistentType.getMapping(); |
| } |
| return null; |
| } |
| |
| protected PersistentType getTargetPersistentType() { |
| // try to resolve by only the locally specified name |
| PersistentType persistentType = getPersistenceUnit().getPersistentType(getTargetEntity()); |
| if (persistentType == null) { |
| // try to resolve by prepending the global package name |
| persistentType = getPersistenceUnit().getPersistentType(getEntityMappings().getPackage() + "." + getTargetEntity()); |
| } |
| return persistentType; |
| } |
| } |