| /* |
| * Copyright (c) OSGi Alliance (2010, 2013). 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.framework.hooks.service; |
| |
| import java.util.Collection; |
| import java.util.Map; |
| import org.osgi.annotation.versioning.ConsumerType; |
| import org.osgi.framework.BundleContext; |
| import org.osgi.framework.ServiceEvent; |
| import org.osgi.framework.hooks.service.ListenerHook.ListenerInfo; |
| |
| /** |
| * OSGi Framework Service Event Listener Hook Service. |
| * |
| * <p> |
| * Bundles registering this service will be called during framework service |
| * (register, modify, and unregister service) operations. |
| * |
| * @ThreadSafe |
| * @since 1.1 |
| * @author $Id: 2b80241ca24005be3a9a3550138e1ba9a3a9ad6e $ |
| */ |
| @ConsumerType |
| public interface EventListenerHook { |
| /** |
| * Event listener hook method. This method is called prior to service event |
| * delivery when a publishing bundle registers, modifies or unregisters a |
| * service. This method can filter the listeners which receive the event. |
| * |
| * @param event The service event to be delivered. |
| * @param listeners A map of Bundle Contexts to a collection of Listener |
| * Infos for the bundle's listeners to which the specified event will |
| * be delivered. The implementation of this method may remove bundle |
| * contexts from the map and listener infos from the collection |
| * values to prevent the event from being delivered to the associated |
| * listeners. The map supports all the optional {@code Map} |
| * operations except {@code put} and {@code putAll}. Attempting to |
| * add to the map will result in an |
| * {@code UnsupportedOperationException}. The collection values in |
| * the map supports all the optional {@code Collection} operations |
| * except {@code add} and {@code addAll}. Attempting to add to a |
| * collection will result in an {@code UnsupportedOperationException} |
| * . The map and the collections are not synchronized. |
| */ |
| void event(ServiceEvent event, Map<BundleContext, Collection<ListenerInfo>> listeners); |
| } |