001 /**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017 package org.apache.geronimo.tomcat;
018
019 import java.util.Map;
020
021 import org.apache.catalina.LifecycleListener;
022 import org.apache.commons.logging.Log;
023 import org.apache.commons.logging.LogFactory;
024 import org.apache.geronimo.gbean.GBeanInfo;
025 import org.apache.geronimo.gbean.GBeanInfoBuilder;
026 import org.apache.geronimo.gbean.GBeanLifecycle;
027
028 /**
029 * @version $Rev: 486195 $ $Date: 2006-12-12 08:42:02 -0700 (Tue, 12 Dec 2006) $
030 */
031 public class LifecycleListenerGBean extends BaseGBean implements GBeanLifecycle, ObjectRetriever {
032
033 private static final Log log = LogFactory.getLog(LifecycleListenerGBean.class);
034
035 public static final String J2EE_TYPE = "TomcatLifecycleListener";
036
037 private final LifecycleListener listener;
038 private final LifecycleListenerGBean nextListener;
039 private final String className;
040
041
042 public LifecycleListenerGBean(){
043 listener = null;
044 nextListener = null;
045 className = null;
046 }
047
048 public LifecycleListenerGBean(String className, Map initParams, LifecycleListenerGBean nextListener) throws Exception{
049
050 //Validate
051 if (className == null){
052 throw new IllegalArgumentException("className cannot be null.");
053 }
054
055 if (nextListener != null){
056 if (!(nextListener.getInternalObject() instanceof LifecycleListener)){
057 throw new IllegalArgumentException("The class given as the NextListener attribute does not wrap an object of org.apache.catalina.LifecycleListener type.");
058 }
059 this.nextListener = nextListener;
060 } else {
061 this.nextListener = null;
062 }
063
064 this.className = className;
065
066 //Create the Listener object
067 listener = (LifecycleListener)Class.forName(className).newInstance();
068
069 //Set the parameters
070 setParameters(listener, initParams);
071
072 }
073
074 public void doStart() throws Exception {
075 log.debug(className + " started.");
076 }
077
078 public void doStop() throws Exception {
079 log.debug(className + " stopped.");
080 }
081
082 public void doFail() {
083 log.warn(className + " failed.");
084 }
085
086 public Object getInternalObject() {
087 return listener;
088 }
089
090 public LifecycleListenerGBean getNextListener() {
091 return nextListener;
092 }
093
094 public static final GBeanInfo GBEAN_INFO;
095
096 static {
097 GBeanInfoBuilder infoFactory = GBeanInfoBuilder.createStatic(LifecycleListenerGBean.class, J2EE_TYPE);
098 infoFactory.addAttribute("className", String.class, true);
099 infoFactory.addAttribute("initParams", Map.class, true);
100 infoFactory.addReference("NextListener", LifecycleListenerGBean.class, J2EE_TYPE);
101 infoFactory.addOperation("getInternalObject");
102 infoFactory.addOperation("getNextListener");
103 infoFactory.setConstructor(new String[] { "className", "initParams", "NextListener" });
104 GBEAN_INFO = infoFactory.getBeanInfo();
105 }
106
107 public static GBeanInfo getGBeanInfo() {
108 return GBEAN_INFO;
109 }
110
111 }