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 20 package org.apache.myfaces.orchestra.frameworkAdapter.basic; 21 22 import org.apache.commons.logging.Log; 23 import org.apache.commons.logging.LogFactory; 24 25 import javax.servlet.Filter; 26 import javax.servlet.FilterChain; 27 import javax.servlet.FilterConfig; 28 import javax.servlet.ServletException; 29 import javax.servlet.ServletRequest; 30 import javax.servlet.ServletResponse; 31 import java.io.IOException; 32 33 /** 34 * Configures the BasicFrameworkAdapter. 35 * <p> 36 * Orchestra accesses information about the request, response, session, etc via a 37 * FrameworkAdapter so that it can be used with multiple web tier frameworks. This 38 * class selects and configures the simplest version of this adapter, which only 39 * depends on the <i>basic</i> Servlet APIs. 40 * <p> 41 * If filter config parameter "conversationMessagerClass" is set, then this is 42 * passed to the BasicFrameworkAdapter, meaning that this can be either a 43 * beanname defined in the dependency-injection framework, or an absolute 44 * classname of a type implementing ConversationMessager. 45 */ 46 public class BasicFrameworkAdapterFilter implements Filter 47 { 48 private final static String INIT_CONVERSATION_MESSAGER = "conversationMessagerClass"; 49 50 private final Log log = LogFactory.getLog(BasicFrameworkAdapterFilter.class); 51 private BasicFrameworkAdapter adapter; 52 53 public void init(FilterConfig filterConfig) throws ServletException 54 { 55 String conversationMessager = filterConfig.getInitParameter(INIT_CONVERSATION_MESSAGER); 56 57 adapter = new BasicFrameworkAdapter(filterConfig.getServletContext(), conversationMessager); 58 } 59 60 public void doFilter(ServletRequest req, ServletResponse rsp, FilterChain filterChain) throws IOException, ServletException 61 { 62 log.debug("doFilter"); 63 try 64 { 65 adapter.beginRequest(req, rsp); 66 filterChain.doFilter(req, rsp); 67 } 68 finally 69 { 70 adapter.endRequest(); 71 } 72 } 73 74 public void destroy() 75 { 76 } 77 }