/*

  * Licensed to the Apache Software Foundation (ASF) under one

  * or more contributor license agreements.  See the NOTICE file

  * distributed with this work for additional information

  * regarding copyright ownership.  The ASF licenses this file

  * to you under the Apache License, Version 2.0 (the

  * "License"); you may not use this file except in compliance

  * with the License.  You may obtain a copy of the License at

  *

  *   http://www.apache.org/licenses/LICENSE-2.0

  *

  * Unless required by applicable law or agreed to in writing,

  * software distributed under the License is distributed on an

  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

  * KIND, either express or implied.  See the License for the

  * specific language governing permissions and limitations

  * under the License.

  */

 package org.apache.myfaces.webapp;

 import org.apache.commons.logging.Log;

 import org.apache.commons.logging.LogFactory;

 import org.apache.myfaces.shared_impl.webapp.webxml.DelegatedFacesServlet;

 import org.apache.myfaces.util.ContainerUtils;

 import javax.faces.webapp.FacesServlet;

 import javax.servlet.*;

 import java.io.IOException;

 /**

  * Derived FacesServlet that can be used for debugging purpose

  * and to fix the Weblogic startup issue (FacesServlet is initialized before ServletContextListener).

  *

  * @author Manfred Geiler (latest modification by $Author: skitching $)

  * @version $Revision: 684465 $ $Date: 2008-08-10 06:38:21 -0500 (Sun, 10 Aug 2008) $

  */

 public class MyFacesServlet implements Servlet, DelegatedFacesServlet

 {

     private static final Log log = LogFactory.getLog(MyFacesServlet.class);

     private final FacesServlet delegate = new FacesServlet();

     private FacesInitializer _facesInitializer;

     protected FacesInitializer getFacesInitializer()

     {

         if (_facesInitializer == null)

         {

             if (ContainerUtils.isJsp21()) 

             {

                 _facesInitializer = new Jsp21FacesInitializer();

             } 

             else 

             {

                 _facesInitializer = new Jsp20FacesInitializer();

             }

         }

         return _facesInitializer;

     }

     public void setFacesInitializer(FacesInitializer facesInitializer)

     {

         _facesInitializer = facesInitializer;

     }

     public void destroy()

     {

         delegate.destroy();

     }

     public ServletConfig getServletConfig()

     {

         return delegate.getServletConfig();

     }

     public String getServletInfo()

     {

         return delegate.getServletInfo();

     }

     public void init(ServletConfig servletConfig)

         throws ServletException

     {

         //Check, if ServletContextListener already called

         ServletContext servletContext = servletConfig.getServletContext();

         Boolean b = (Boolean)servletContext.getAttribute(StartupServletContextListener.FACES_INIT_DONE);

         if (b == null || b.booleanValue() == false)

         {

             if(log.isWarnEnabled())

                 log.warn("ServletContextListener not yet called");

             getFacesInitializer().initFaces(servletConfig.getServletContext());

         }

         delegate.init(servletConfig);

         log.info("MyFacesServlet for context '" + servletConfig.getServletContext().getRealPath("/") + "' initialized.");

     }

     public void service(ServletRequest request, ServletResponse response)

             throws IOException,

                    ServletException

     {

         if (log.isTraceEnabled()) log.trace("MyFacesServlet service start");

         delegate.service(request, response);

         if (log.isTraceEnabled()) log.trace("MyFacesServlet service finished");

     }

 }