001 package org.apache.myfaces.tobago.webapp; 002 003 /* 004 * Licensed to the Apache Software Foundation (ASF) under one or more 005 * contributor license agreements. See the NOTICE file distributed with 006 * this work for additional information regarding copyright ownership. 007 * The ASF licenses this file to You under the Apache License, Version 2.0 008 * (the "License"); you may not use this file except in compliance with 009 * the License. You may obtain a copy of the License at 010 * 011 * http://www.apache.org/licenses/LICENSE-2.0 012 * 013 * Unless required by applicable law or agreed to in writing, software 014 * distributed under the License is distributed on an "AS IS" BASIS, 015 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 016 * See the License for the specific language governing permissions and 017 * limitations under the License. 018 */ 019 020 import org.apache.commons.logging.Log; 021 import org.apache.commons.logging.LogFactory; 022 import org.apache.myfaces.tobago.config.TobagoConfig; 023 024 import javax.faces.FactoryFinder; 025 import javax.faces.lifecycle.LifecycleFactory; 026 import javax.servlet.ServletContextEvent; 027 import javax.servlet.ServletContextListener; 028 import javax.servlet.ServletException; 029 import javax.servlet.http.HttpServlet; 030 031 /** 032 * Workaround: Weblogic 8.1 calls the ContextListeners after calling 033 * Servlet.init() but, JSF assume it does it before. 034 * Maybe weblogic doesn't call ContextListeners from *.jar! 035 * 036 * @see <a href="http://forum.java.sun.com/thread.jsp?forum=427&thread=499690"> 037 * WLS8.1 & JSF 1.0 Final: "Faces Servlet" failed to preload</a> 038 */ 039 public class WeblogicWorkaroundServlet extends HttpServlet { 040 041 private static final long serialVersionUID = -8636608446986072719L; 042 043 private static final Log LOG = LogFactory.getLog(WeblogicWorkaroundServlet.class); 044 045 public void init() throws ServletException { 046 if (LOG.isDebugEnabled()) { 047 LOG.debug("1st"); 048 } 049 LifecycleFactory factory = (LifecycleFactory) 050 FactoryFinder.getFactory(FactoryFinder.LIFECYCLE_FACTORY); 051 052 if (factory == null) { // Faces ConfigureListener is not called until now! 053 final String className = "com.sun.faces.config.ConfigureListener"; 054 if (LOG.isDebugEnabled()) { 055 LOG.debug("Init of " + className + " by servlet!"); 056 } 057 callInit(className); 058 } 059 060 if (LOG.isDebugEnabled()) { 061 LOG.debug("2nd"); 062 } 063 TobagoConfig tobagoConfig = (TobagoConfig) 064 getServletContext().getAttribute(TobagoConfig.TOBAGO_CONFIG); 065 066 if (tobagoConfig == null) { // TobagoServletContextListener is not called until now! 067 final String className = TobagoServletContextListener.class.getName(); 068 if (LOG.isDebugEnabled()) { 069 LOG.debug("Init of " + className + " by servlet!"); 070 } 071 callInit(className); 072 } 073 074 if (LOG.isDebugEnabled()) { 075 LOG.debug("3rd"); 076 } 077 } 078 079 private void callInit(String className) { 080 try { 081 Class aClass = Class.forName(className); 082 ServletContextListener listener = (ServletContextListener) aClass.newInstance(); 083 listener.contextInitialized(new ServletContextEvent(getServletContext())); 084 } catch (ClassNotFoundException e) { 085 LOG.error("", e); 086 } catch (IllegalAccessException e) { 087 LOG.error("", e); 088 } catch (InstantiationException e) { 089 LOG.error("", e); 090 } 091 } 092 } 093