/* 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.marshall;
import com.db4o.internal.*;
import com.db4o.internal.btree.*;
import com.db4o.internal.classindex.*;
import com.db4o.internal.convert.conversions.*;
/**
* @exclude
*/
public class ClassMarshaller0 extends ClassMarshaller{
protected void readIndex(ObjectContainerBase stream, ClassMetadata clazz, ByteArrayBuffer reader) {
int indexID = reader.readInt();
if(! stream.maintainsIndices() || ! (stream instanceof LocalObjectContainer)){
return;
}
if(btree(clazz) != null){
return;
}
clazz.index().read(stream, validIndexId(indexID));
if(isOldClassIndex(indexID)){
new ClassIndexesToBTrees_5_5().convert((LocalObjectContainer)stream, indexID, btree(clazz));
stream.setDirtyInSystemTransaction(clazz);
}
}
private BTree btree(ClassMetadata clazz) {
return BTreeClassIndexStrategy.btree(clazz);
}
private int validIndexId(int indexID) {
return isOldClassIndex(indexID) ? 0 : -indexID;
}
private boolean isOldClassIndex(int indexID) {
return indexID > 0;
}
protected int indexIDForWriting(int indexID){
return indexID;
}
}