/*
* eXist Open Source Native XML Database
* Copyright (C) 2001-04 The eXist Project
* http://exist-db.org
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Id$
*/
package org.exist.xquery.value;
import org.exist.dom.NodeProxy;
import org.exist.memtree.NodeImpl;
import java.util.Comparator;
/**
* @author wolf
*/
public class MixedNodeValueComparator implements Comparator {
/* (non-Javadoc)
* @see org.exist.dom.DocumentOrderComparator#compare(java.lang.Object, java.lang.Object)
*/
public int compare(Object o1, Object o2) {
NodeValue n1 = (NodeValue) o1;
NodeValue n2 = (NodeValue) o2;
if (n1.getImplementationType() == NodeValue.IN_MEMORY_NODE) {
if (n2.getImplementationType() == NodeValue.IN_MEMORY_NODE)
return ((NodeImpl)n1).compareTo((NodeImpl)n2);
else
return -1;
} else {
if (n2.getImplementationType() == NodeValue.PERSISTENT_NODE)
return ((NodeProxy)o1).compareTo((NodeProxy)o2);
else
return 1;
}
}
}