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// ========================================================================
// Copyright (c) 2010 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
// The Eclipse Public License is available at 
// http://www.eclipse.org/legal/epl-v10.html
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
// You may elect to redistribute this code under either of these licenses. 
// ========================================================================

package org.eclipse.jetty.webapp;

import java.net.URL;

import org.eclipse.jetty.util.resource.Resource;
import org.eclipse.jetty.xml.XmlParser;

public abstract class Descriptor
{
    protected Resource _xml;
    protected XmlParser.Node _root;
    protected XmlParser _parser;
    protected boolean _validating;
    
    public Descriptor (Resource xml)
    {
        _xml = xml;
    }
    
    public abstract XmlParser newParser()
    throws ClassNotFoundException;
    
    public abstract void ensureParser()
    throws ClassNotFoundException;
    
    protected void redirect(XmlParser parser, String resource, URL source)
    {
        if (source != null) parser.redirectEntity(resource, source);
    }
    
    
    public void setValidating (boolean validating)
    {
       _validating = validating;
    }
    
    public void parse ()
    throws Exception
    {
        if (_parser == null)
           ensureParser();
        
        if (_root == null)
        {
            //boolean oldValidating = _processor.getParser().getValidating();
            //_processor.getParser().setValidating(_validating);
            _root = _parser.parse(_xml.getURL().toString());
            //_processor.getParser().setValidating(oldValidating);
        }
    }
    
    public Resource getResource ()
    {
        return _xml;
    }
    
    public XmlParser.Node getRoot ()
    {
        return _root;
    }
}