/*
* 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;
import org.exist.dom.DocumentImpl;
import org.exist.dom.ExtNodeSet;
import org.exist.dom.NodeProxy;
import org.exist.dom.NodeSet;
import org.exist.numbering.NodeId;
public class AncestorSelector implements NodeSelector {
private NodeSet ancestors;
private NodeSet descendants = null;
private int contextId;
private boolean includeSelf;
private boolean copyMatches;
public AncestorSelector(NodeSet descendants, int contextId, boolean includeSelf, boolean copyMatches) {
super();
this.contextId = contextId;
this.includeSelf = includeSelf;
this.copyMatches = copyMatches;
if (descendants instanceof ExtNodeSet)
this.descendants = descendants;
else
this.ancestors = descendants.getAncestors(contextId, includeSelf);
}
public NodeProxy match(DocumentImpl doc, NodeId nodeId) {
if (descendants == null)
return ancestors.get(doc, nodeId);
else
return ((ExtNodeSet) descendants).hasDescendantsInSet(doc, nodeId, includeSelf, contextId, copyMatches);
}
}