/*
* eXist Open Source Native XML Database
* Copyright (C) 2001-2014 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.dom.persistent;
import org.exist.storage.dom.INodeIterator;
/**
* Visitor pattern: interface to be implemented by a visitable node.
*/
public interface Visitable {
/**
* Visit the current node. For element nodes,
* the method recursively traverses through the child nodes and
* calls accept on each of them.
*
* @param iterator an iterator positioned at the current node
* @param visitor the visitor to call.
* @return the value returned by the NodeVisitor.visit method.
*/
public boolean accept(INodeIterator iterator, NodeVisitor visitor);
}