| /* |
| * $Id$ |
| * |
| * 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.tiles.el; |
| |
| import javax.el.ExpressionFactory; |
| import javax.servlet.ServletContext; |
| import javax.servlet.jsp.JspFactory; |
| |
| import org.apache.tiles.request.ApplicationContext; |
| import org.apache.tiles.request.ApplicationContextAware; |
| |
| /** |
| * Uses the JSP 2.1 {@link ExpressionFactory} to be used in Tiles. |
| * |
| * @version $Rev$ $Date$ |
| * @since 2.2.1 |
| */ |
| public class JspExpressionFactoryFactory implements ExpressionFactoryFactory, |
| ApplicationContextAware { |
| |
| /** |
| * The servlet context. |
| * |
| * @since 2.2.1 |
| */ |
| protected ServletContext servletContext; |
| |
| /** {@inheritDoc} */ |
| public void setApplicationContext(ApplicationContext applicationContext) { |
| Object context = applicationContext.getContext(); |
| if (context instanceof ServletContext) { |
| this.servletContext = (ServletContext) context; |
| } else { |
| throw new IllegalArgumentException( |
| "The application context does not hold an instance of " |
| + "ServletContext, consider using JuelExpressionFactoryFactory"); |
| } |
| } |
| |
| /** {@inheritDoc} */ |
| public ExpressionFactory getExpressionFactory() { |
| return JspFactory.getDefaultFactory().getJspApplicationContext( |
| servletContext).getExpressionFactory(); |
| } |
| } |