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// ========================================================================
// Copyright (c) 2006-2010 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 java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import javax.servlet.Servlet;

import org.eclipse.jetty.util.Loader;
import org.eclipse.jetty.util.log.Log;
import org.eclipse.jetty.util.log.Logger;
import org.eclipse.jetty.util.resource.Resource;
import org.eclipse.jetty.xml.XmlParser;



/**
 * Descriptor
 *
 * A web descriptor (web.xml/web-defaults.xml/web-overrides.xml).
 */
public class WebDescriptor extends Descriptor
{
    private static final Logger LOG = Log.getLogger(WebDescriptor.class);
 
    protected static XmlParser _parserSingleton;
    protected MetaDataComplete _metaDataComplete;
    protected int _majorVersion = 3; //default to container version
    protected int _minorVersion = 0;
    protected ArrayList _classNames = new ArrayList();
    protected boolean _distributable;

    protected boolean _isOrdered = false;
    protected List _ordering = new ArrayList();
    
    @Override
    public void ensureParser()
    throws ClassNotFoundException
    {
        if (_parserSingleton == null)
        {
            _parserSingleton = newParser();
        }
        _parser = _parserSingleton;
    }

    
    public XmlParser newParser()
    throws ClassNotFoundException
    {
        XmlParser xmlParser=new XmlParser();
        //set up cache of DTDs and schemas locally        
        URL dtd22=Loader.getResource(Servlet.class,"javax/servlet/resources/web-app_2_2.dtd",true);
        URL dtd23=Loader.getResource(Servlet.class,"javax/servlet/resources/web-app_2_3.dtd",true);
        URL j2ee14xsd=Loader.getResource(Servlet.class,"javax/servlet/resources/j2ee_1_4.xsd",true);
        URL webapp24xsd=Loader.getResource(Servlet.class,"javax/servlet/resources/web-app_2_4.xsd",true);
        URL webapp25xsd=Loader.getResource(Servlet.class,"javax/servlet/resources/web-app_2_5.xsd",true);
        URL webapp30xsd=Loader.getResource(Servlet.class,"javax/servlet/resources/web-app_3_0.xsd",true);
        URL webcommon30xsd=Loader.getResource(Servlet.class,"javax/servlet/resources/web-common_3_0.xsd",true);
        URL webfragment30xsd=Loader.getResource(Servlet.class,"javax/servlet/resources/web-fragment_3_0.xsd",true);
        URL schemadtd=Loader.getResource(Servlet.class,"javax/servlet/resources/XMLSchema.dtd",true);
        URL xmlxsd=Loader.getResource(Servlet.class,"javax/servlet/resources/xml.xsd",true);
        URL webservice11xsd=Loader.getResource(Servlet.class,"javax/servlet/resources/j2ee_web_services_client_1_1.xsd",true);
        URL webservice12xsd=Loader.getResource(Servlet.class,"javax/servlet/resources/javaee_web_services_client_1_2.xsd",true);
        URL datatypesdtd=Loader.getResource(Servlet.class,"javax/servlet/resources/datatypes.dtd",true);

        URL jsp20xsd = null;
        URL jsp21xsd = null;

        try
        {
            Class jsp_page = Loader.loadClass(WebXmlConfiguration.class, "javax.servlet.jsp.JspPage");
            jsp20xsd = jsp_page.getResource("/javax/servlet/resources/jsp_2_0.xsd");
            jsp21xsd = jsp_page.getResource("/javax/servlet/resources/jsp_2_1.xsd");
        }
        catch (Exception e)
        {
            LOG.ignore(e);
        }
        finally
        {
            if (jsp20xsd == null) jsp20xsd = Loader.getResource(Servlet.class, "javax/servlet/resources/jsp_2_0.xsd", true);
            if (jsp21xsd == null) jsp21xsd = Loader.getResource(Servlet.class, "javax/servlet/resources/jsp_2_1.xsd", true);
        }
        
        redirect(xmlParser,"web-app_2_2.dtd",dtd22);
        redirect(xmlParser,"-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN",dtd22);
        redirect(xmlParser,"web.dtd",dtd23);
        redirect(xmlParser,"web-app_2_3.dtd",dtd23);
        redirect(xmlParser,"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN",dtd23);
        redirect(xmlParser,"XMLSchema.dtd",schemadtd);
        redirect(xmlParser,"http://www.w3.org/2001/XMLSchema.dtd",schemadtd);
        redirect(xmlParser,"-//W3C//DTD XMLSCHEMA 200102//EN",schemadtd);
        redirect(xmlParser,"jsp_2_0.xsd",jsp20xsd);
        redirect(xmlParser,"http://java.sun.com/xml/ns/j2ee/jsp_2_0.xsd",jsp20xsd);
        redirect(xmlParser,"http://java.sun.com/xml/ns/javaee/jsp_2_1.xsd",jsp21xsd);
        redirect(xmlParser,"j2ee_1_4.xsd",j2ee14xsd);
        redirect(xmlParser,"http://java.sun.com/xml/ns/j2ee/j2ee_1_4.xsd",j2ee14xsd);
        redirect(xmlParser,"web-app_2_4.xsd",webapp24xsd);
        redirect(xmlParser,"http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd",webapp24xsd);
        redirect(xmlParser,"web-app_2_5.xsd",webapp25xsd);
        redirect(xmlParser,"http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd",webapp25xsd);
        redirect(xmlParser,"web-app_3_0.xsd",webapp30xsd);
        redirect(xmlParser,"http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd",webapp30xsd);
        redirect(xmlParser,"web-common_3_0.xsd",webcommon30xsd);
        redirect(xmlParser,"http://java.sun.com/xml/ns/javaee/web-common_3_0.xsd",webcommon30xsd);
        redirect(xmlParser,"web-fragment_3_0.xsd",webfragment30xsd);
        redirect(xmlParser,"http://java.sun.com/xml/ns/javaee/web-fragment_3_0.xsd",webfragment30xsd);
        redirect(xmlParser,"xml.xsd",xmlxsd);
        redirect(xmlParser,"http://www.w3.org/2001/xml.xsd",xmlxsd);
        redirect(xmlParser,"datatypes.dtd",datatypesdtd);
        redirect(xmlParser,"http://www.w3.org/2001/datatypes.dtd",datatypesdtd);
        redirect(xmlParser,"j2ee_web_services_client_1_1.xsd",webservice11xsd);
        redirect(xmlParser,"http://www.ibm.com/webservices/xsd/j2ee_web_services_client_1_1.xsd",webservice11xsd);
        redirect(xmlParser,"javaee_web_services_client_1_2.xsd",webservice12xsd);
        redirect(xmlParser,"http://www.ibm.com/webservices/xsd/javaee_web_services_client_1_2.xsd",webservice12xsd);
        return xmlParser;
    }
    
    
    public WebDescriptor (Resource xml)
    {
        super(xml);
    }
    
    public void parse ()
    throws Exception
    {
        super.parse();
        processVersion();
        processOrdering();
    }
    
    public MetaDataComplete getMetaDataComplete()
    {
        return _metaDataComplete;
    }
    
 
    
    public int getMajorVersion ()
    {
        return _majorVersion;
    }
    
    public int getMinorVersion()
    {
        return _minorVersion;
    }
  
    
    public void processVersion ()
    {
        String version = _root.getAttribute("version", "DTD");
        if ("DTD".equals(version))
        {
            _majorVersion = 2;
            _minorVersion = 3;
            String dtd = _parser.getDTD();
            if (dtd != null && dtd.indexOf("web-app_2_2") >= 0)
            {
                _majorVersion = 2;
                _minorVersion = 2;
            }
        }
        else 
        {
           int dot = version.indexOf(".");
           if (dot > 0)
           {
               _majorVersion = Integer.parseInt(version.substring(0,dot));
               _minorVersion = Integer.parseInt(version.substring(dot+1));
           }
        }
     
        if (_majorVersion < 2 && _minorVersion < 5)
            _metaDataComplete = MetaDataComplete.True; // does not apply before 2.5
        else
        {
            String s = (String)_root.getAttribute("metadata-complete");
            if (s == null)
                _metaDataComplete = MetaDataComplete.NotSet;
            else
                _metaDataComplete = Boolean.valueOf(s).booleanValue()?MetaDataComplete.True:MetaDataComplete.False;
        }
            
        if (LOG.isDebugEnabled())
            LOG.debug(_xml.toString()+": Calculated metadatacomplete = " + _metaDataComplete + " with version=" + version);     
    }
    
    public void processOrdering ()
    {
        //Process the web.xml's optional  element              
        XmlParser.Node ordering = _root.get("absolute-ordering");
        if (ordering == null)
           return;
        
        _isOrdered = true;
        //If an absolute-ordering was already set, then ignore it in favor of this new one
       // _processor.setOrdering(new AbsoluteOrdering());
   
        Iterator iter = ordering.iterator();
        XmlParser.Node node = null;
        while (iter.hasNext())
        {
            Object o = iter.next();
            if (!(o instanceof XmlParser.Node)) continue;
            node = (XmlParser.Node) o;

            if (node.getTag().equalsIgnoreCase("others"))
                //((AbsoluteOrdering)_processor.getOrdering()).addOthers();
                _ordering.add("others");
            else if (node.getTag().equalsIgnoreCase("name"))
                //((AbsoluteOrdering)_processor.getOrdering()).add(node.toString(false,true));
                _ordering.add(node.toString(false,true));
        }
    }
  
    public void addClassName (String className)
    {
        if (!_classNames.contains(className))
            _classNames.add(className);
    }
    
    public ArrayList getClassNames ()
    {
        return _classNames;
    }
    
    public void setDistributable (boolean distributable)
    {
        _distributable = distributable;
    }
    
    public boolean isDistributable()
    {
        return _distributable;
    }
    
    public void setValidating (boolean validating)
    {
       _validating = validating;
    }
    
    
    public boolean isOrdered()
    {
        return _isOrdered;
    }
    
    public List getOrdering()
    {
        return _ordering;
    }

  
}
    

    

    

            

    

            



    
    






    
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