/*

  * 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 javax.el.ExpressionFactory;

 import javax.faces.FacesException;

 import javax.faces.context.ExternalContext;

 import javax.servlet.ServletContext;

 /**

  * This initializer initializes only Facelets. Specially checks for

  * org.apache.myfaces.EXPRESSION_FACTORY parameter.

  * 

  * @author Martin Koci

  */

 public class FaceletsInitilializer extends org.apache.myfaces.webapp.AbstractFacesInitializer

 {

     @Override

     protected void initContainerIntegration(ServletContext servletContext, ExternalContext externalContext)

     {

         ExpressionFactory expressionFactory = getUserDefinedExpressionFactory(externalContext);

         if (expressionFactory == null)

         {

             throw new FacesException("No javax.el.ExpressionFactory found. Please provide" +

                     " <context-param> in web.xml: org.apache.myfaces.EXPRESSION_FACTORY");

         }

         buildConfiguration(servletContext, externalContext, expressionFactory);

     }

 }