| /* |
| * $Header: /cvshome/build/org.osgi.application/src/org/osgi/application/ApplicationServiceListener.java,v 1.6 2006/07/12 21:21:34 hargrave Exp $ |
| * |
| * Copyright (c) OSGi Alliance (2005, 2006). All Rights Reserved. |
| * |
| * 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.osgi.application; |
| |
| import java.util.EventListener; |
| |
| import org.osgi.framework.*; |
| |
| /** |
| * An <code>ApplicationServiceEvent</code> listener. When a |
| * <code>ServiceEvent</code> is |
| * fired, it is converted to an <code>ApplictionServiceEvent</code> |
| * and it is synchronously delivered to an <code>ApplicationServiceListener</code>. |
| * |
| * <p> |
| * <code>ApplicationServiceListener</code> is a listener interface that may be |
| * implemented by an application developer. |
| * <p> |
| * An <code>ApplicationServiceListener</code> object is registered with the Framework |
| * using the <code>ApplicationContext.addServiceListener</code> method. |
| * <code>ApplicationServiceListener</code> objects are called with an |
| * <code>ApplicationServiceEvent</code> object when a service is registered, modified, or |
| * is in the process of unregistering. |
| * |
| * <p> |
| * <code>ApplicationServiceEvent</code> object delivery to |
| * <code>ApplicationServiceListener</code> |
| * objects is filtered by the filter specified when the listener was registered. |
| * If the Java Runtime Environment supports permissions, then additional |
| * filtering is done. <code>ApplicationServiceEvent</code> objects are only delivered to |
| * the listener if the application which defines the listener object's class has the |
| * appropriate <code>ServicePermission</code> to get the service using at |
| * least one of the named classes the service was registered under, and the application |
| * specified its dependece on the corresponding service in the application metadata. |
| * |
| * <p> |
| * <code>ApplicationServiceEvent</code> object delivery to <code>ApplicationServiceListener</code> |
| * objects is further filtered according to package sources as defined in |
| * {@link ServiceReference#isAssignableTo(Bundle, String)}. |
| * |
| * @version $Revision: 1.6 $ |
| * @see ApplicationServiceEvent |
| * @see ServicePermission |
| */ |
| public interface ApplicationServiceListener extends EventListener { |
| /** |
| * Receives notification that a service has had a lifecycle change. |
| * |
| * @param event The <code>ApplicationServiceEvent</code> object. |
| */ |
| public void serviceChanged(ApplicationServiceEvent event); |
| } |