oracle.toplink.essentials.internal.sessions.AggregateCollectionChangeRecord Maven / Gradle / Ivy
/*
* The contents of this file are subject to the terms
* of the Common Development and Distribution License
* (the "License"). You may not use this file except
* in compliance with the License.
*
* You can obtain a copy of the license at
* glassfish/bootstrap/legal/CDDLv1.0.txt or
* https://glassfish.dev.java.net/public/CDDLv1.0.html.
* See the License for the specific language governing
* permissions and limitations under the License.
*
* When distributing Covered Code, include this CDDL
* HEADER in each file and include the License file at
* glassfish/bootstrap/legal/CDDLv1.0.txt. If applicable,
* add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your
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// Copyright (c) 1998, 2007, Oracle. All rights reserved.
package oracle.toplink.essentials.internal.sessions;
import java.util.*;
/**
* This change record records the changes for AggregateCollectionMapping.
*/
public class AggregateCollectionChangeRecord extends ChangeRecord implements oracle.toplink.essentials.changesets.AggregateCollectionChangeRecord {
protected Vector changedValues;
/**
* This default constructor referenced internally by SDK XML project
*/
public AggregateCollectionChangeRecord() {
super();
}
/**
* This constructor returns an ChangeRecord representing an AggregateMapping.
* @param owner oracle.toplink.essentials.internal.sessions.ObjectChangeSet represents the Object Change Set that uses this record
*/
public AggregateCollectionChangeRecord(ObjectChangeSet owner) {
super();
this.owner = owner;
}
/**
* ADVANCED:
* Return the values representing the changed AggregateCollection.
* @return prototype.changeset.ObjectChanges
*/
public Vector getChangedValues() {
if (changedValues == null) {
changedValues = new Vector(2);
}
return changedValues;
}
/**
* INTERNAL:
* This method will be used to merge one record into another
*/
public void mergeRecord(ChangeRecord mergeFromRecord, UnitOfWorkChangeSet mergeToChangeSet, UnitOfWorkChangeSet mergeFromChangeSet) {
this.setChangedValues(((AggregateCollectionChangeRecord)mergeFromRecord).getChangedValues());
//an aggregate collection changerecord contains a copy of the entire collection, not just the changes
//so there in no need to merge it, just replace it.
for (int index = 0; index < this.getChangedValues().size(); ++index) {
((ObjectChangeSet)this.getChangedValues().get(index)).updateReferences(mergeToChangeSet, mergeFromChangeSet);
;
}
}
/**
* INTERNAL:
* Set the changed values
* @param newValue prototype.changeset.ObjectChanges
*/
public void setChangedValues(Vector newValues) {
changedValues = newValues;
}
/**
* INTERNAL:
* This method will be used to update the objectsChangeSets references
* If this is an aggregate change set then there is no need to update the
* reference as the ChangeSet has no identity outside of this record
* Check to see if it exists here already to prevent us from creating a little
* extra garbage.
*/
public void updateReferences(UnitOfWorkChangeSet mergeToChangeSet, UnitOfWorkChangeSet mergeFromChangeSet) {
for (int index = 0; index < this.getChangedValues().size(); ++index) {
ObjectChangeSet mergedChangeSet = (ObjectChangeSet)this.getChangedValues().get(index);
Object localObject = mergeToChangeSet.getUOWCloneForObjectChangeSet(mergedChangeSet);
if (localObject == null) {
mergeToChangeSet.addObjectChangeSetForIdentity(mergedChangeSet, mergeFromChangeSet.getUOWCloneForObjectChangeSet(mergedChangeSet));
}
}
}
}