/* This file is part of the db4o object database http://www.db4o.com
Copyright (C) 2004 - 2011 Versant Corporation http://www.versant.com
db4o is free software; you can redistribute it and/or modify it under
the terms of version 3 of the GNU General Public License as published
by the Free Software Foundation.
db4o is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License along
with this program. If not, see http://www.gnu.org/licenses/. */
package com.db4o.internal.references;
import com.db4o.foundation.*;
import com.db4o.internal.*;
/**
* @exclude
*/
public class TransactionalReferenceSystem extends TransactionalReferenceSystemBase implements ReferenceSystem {
@Override
public void commit() {
traverseNewReferences(new Visitor4() {
public void visit(Object obj) {
ObjectReference oref = (ObjectReference)obj;
if(oref.getObject() != null){
_committedReferences.addExistingReference(oref);
}
}
});
createNewReferences();
}
@Override
public void addExistingReference(ObjectReference ref) {
_committedReferences.addExistingReference(ref);
}
@Override
public void addNewReference(ObjectReference ref) {
_newReferences.addNewReference(ref);
}
@Override
public void removeReference(ObjectReference ref) {
_newReferences.removeReference(ref);
_committedReferences.removeReference(ref);
}
@Override
public void rollback() {
createNewReferences();
}
public void discarded() {
// do nothing;
}
}