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Jetty example source code file (LifeCycleCallbackCollection.java)
The Jetty LifeCycleCallbackCollection.java source code//======================================================================== //$Id: LifeCycleCallbackCollection.java 1540 2007-01-19 12:24:10Z janb $ //Copyright 2006 Mort Bay Consulting Pty. Ltd. //------------------------------------------------------------------------ //Licensed 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.mortbay.jetty.plus.annotation; import java.util.ArrayList; import java.util.HashMap; import java.util.Iterator; import java.util.List; import java.util.Map; import org.mortbay.log.Log; /** * LifeCycleCallbackCollection * * */ public class LifeCycleCallbackCollection { private HashMap postConstructCallbacksMap = new HashMap(); private HashMap preDestroyCallbacksMap = new HashMap(); /** * Add a Callback to the list of callbacks. * * @param callback */ public void add (LifeCycleCallback callback) { if ((callback==null) || (callback.getTargetClass()==null) || (callback.getTarget()==null)) return; if (Log.isDebugEnabled()) Log.debug("Adding callback for class="+callback.getTargetClass()+ " on "+callback.getTarget()); Map map = null; if (callback instanceof PreDestroyCallback) map = preDestroyCallbacksMap; if (callback instanceof PostConstructCallback) map = postConstructCallbacksMap; if (map == null) throw new IllegalArgumentException ("Unsupported lifecycle callback type: "+callback); List callbacks = (List)map.get(callback.getTargetClass()); if (callbacks==null) { callbacks = new ArrayList(); map.put(callback.getTargetClass(), callbacks); } //don't add another callback for exactly the same method if (!callbacks.contains(callback)) callbacks.add(callback); } /** * Call the method, if one exists, that is annotated with PostConstruct * or with <post-construct> in web.xml * @param o the object on which to attempt the callback * @throws Exception */ public void callPostConstructCallback (Object o) throws Exception { if (o == null) return; List callbacks = (List)postConstructCallbacksMap.get(o.getClass()); if (callbacks == null) return; for (int i=0;i<callbacks.size();i++) ((LifeCycleCallback)callbacks.get(i)).callback(o); } /** * Call the method, if one exists, that is annotated with PreDestroy * or with <pre-destroy> in web.xml * @param o the object on which to attempt the callback */ public void callPreDestroyCallback (Object o) throws Exception { if (o == null) return; List callbacks = (List)preDestroyCallbacksMap.get(o.getClass()); if (callbacks == null) return; for (int i=0;i<callbacks.size();i++) ((LifeCycleCallback)callbacks.get(i)).callback(o); } } Other Jetty examples (source code examples)Here is a short list of links related to this Jetty LifeCycleCallbackCollection.java source code file: |
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