1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19 package org.apache.myfaces.webapp;
20
21 import javax.el.ExpressionFactory;
22 import javax.faces.FacesException;
23 import javax.faces.context.ExternalContext;
24 import javax.servlet.ServletContext;
25
26 /**
27 * This initializer initializes only Facelets. Specially checks for
28 * org.apache.myfaces.EXPRESSION_FACTORY parameter.
29 *
30 * @author Martin Koci
31 */
32 public class FaceletsInitilializer extends org.apache.myfaces.webapp.AbstractFacesInitializer
33 {
34
35 @Override
36 protected void initContainerIntegration(ServletContext servletContext, ExternalContext externalContext)
37 {
38
39 ExpressionFactory expressionFactory = getUserDefinedExpressionFactory(externalContext);
40 if (expressionFactory == null)
41 {
42 throw new FacesException("No javax.el.ExpressionFactory found. Please provide" +
43 " <context-param> in web.xml: org.apache.myfaces.EXPRESSION_FACTORY");
44 }
45
46 buildConfiguration(servletContext, externalContext, expressionFactory);
47 }
48
49 }