/* 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;
import com.db4o.internal.activation.*;
/**
* @exclude
*/
public class HardObjectReference {
public static final HardObjectReference INVALID = new HardObjectReference(null, null);
public final ObjectReference _reference;
public final Object _object;
public HardObjectReference(ObjectReference ref, Object obj) {
_reference = ref;
_object = obj;
}
public static HardObjectReference peekPersisted(Transaction trans, int id, int depth) {
Object obj = trans.container().peekPersisted(trans, id, activationDepthProvider(trans).activationDepth(depth, ActivationMode.PEEK), true);
if(obj == null){
return null;
}
ObjectReference ref = trans.referenceForId(id);
return new HardObjectReference(ref, obj);
}
private static ActivationDepthProvider activationDepthProvider(Transaction trans) {
return trans.container().activationDepthProvider();
}
}