/*
* eXist Open Source Native XML Database
* Copyright (C) 2001-06 Wolfgang M. Meier
* wolfgang@exist-db.org
* http://exist.sourceforge.net
*
* 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.NodeProxy;
import org.exist.dom.NodeSet;
import org.exist.numbering.NodeId;
/**
* @author Wolfgang Meier (wolfgang@exist-db.org)
*/
public class ChildSelector implements NodeSelector {
private NodeSet context;
private int contextId;
public ChildSelector(NodeSet contextSet, int contextId) {
this.context = contextSet;
this.contextId = contextId;
}
public NodeProxy match(DocumentImpl doc, NodeId nodeId) {
final NodeProxy contextNode = context.parentWithChild(doc, nodeId, true, false);
if (contextNode == null)
{return null;}
final NodeProxy p = new NodeProxy(doc, nodeId);
if (Expression.NO_CONTEXT_ID != contextId) {
p.deepCopyContext(contextNode, contextId);
} else
{p.copyContext(contextNode);}
return p;
}
}