/* 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.defragment;
import com.db4o.foundation.*;
/**
* Base class for defragment ID mappings.
*
* @see Defragment
*/
public abstract class AbstractIdMapping implements IdMapping {
private Hashtable4 _classIDs = new Hashtable4();
public final void mapId(int origID, int mappedID, boolean isClassID) {
if(isClassID) {
mapClassIDs(origID, mappedID);
return;
}
mapNonClassIDs(origID, mappedID);
}
protected int mappedClassID(int origID) {
Object obj = _classIDs.get(origID);
if(obj == null){
return 0;
}
return ((Integer)obj).intValue();
}
private void mapClassIDs(int oldID, int newID) {
_classIDs.put(oldID,new Integer(newID));
}
protected abstract void mapNonClassIDs(int origID,int mappedID);
}