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 /*
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
  *
  * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
  *
  * Use is subject to license terms.
  *
  * JBoss, Home of Professional Open Source
  * Copyright 2008, Red Hat Middleware LLC, and individual contributors
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * Licensed 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.jboss.weld.integration.webtier.jsp;
import  javax.el.ELContextListener;
import  javax.el.ExpressionFactory;
import  javax.servlet.ServletContextEvent;
import  javax.servlet.jsp.JspApplicationContext;
import  javax.servlet.jsp.JspFactory;
import  org.apache.jasper.runtime.JspApplicationContextImpl;
The Web Beans JSP initialization listener

Author(s):
Pete Muir
public class JspInitializationListener extends AbstractServletListener
   {
      private final JspApplicationContextImpl delegate;
      private final ExpressionFactory expressionFactory;
      public WeldJspApplicationContextImpl(JspApplicationContextImpl delegate, ExpressionFactory expressionFactory)
      {
         this. = delegate;
         this. = expressionFactory;
      }
      @Override
      protected JspApplicationContextImpl delegate()
      {
         return ;
      }
      @Override
      public ExpressionFactory getExpressionFactory()
      {
         return ;
      }
   }
   @Inject
   private BeanManager beanManager;
   @Override
   public void contextInitialized(ServletContextEvent sce)
   {
      if ( != null)
      {
         // get JspApplicationContext.
         JspApplicationContext jspAppContext = JspFactory.getDefaultFactory().getJspApplicationContext(sce.getServletContext());
         // register compositeELResolver with JSP
         jspAppContext.addELResolver(.getELResolver());
         jspAppContext.addELContextListener(Reflections.<ELContextListener>newInstance("org.jboss.weld.el.WeldELContextListener"));
         // Hack into JBoss Web/Catalina to replace the ExpressionFactory
         JspApplicationContextImpl wrappedJspApplicationContextImpl = new WeldJspApplicationContextImpl(JspApplicationContextImpl.getInstance(sce.getServletContext()), .wrapExpressionFactory(jspAppContext.getExpressionFactory()));
         sce.getServletContext().setAttribute(JspApplicationContextImpl.class.getName(), wrappedJspApplicationContextImpl);
      }
      // otherwise something went wrong starting WB, so don't register with JSP
   }
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