| /* |
| * Copyright (c) OSGi Alliance (2008, 2009). 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 org.osgi.framework.ServiceEvent; |
| |
| /** |
| * OSGi Framework Service Event Hook Service. |
| * |
| * <p> |
| * Bundles registering this service will be called during framework service |
| * (register, modify, and unregister service) operations. |
| * |
| * @ThreadSafe |
| * @version $Revision: 6860 $ |
| */ |
| |
| public interface EventHook { |
| /** |
| * Event 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 bundles which receive the event. |
| * |
| * @param event The service event to be delivered. |
| * @param contexts A <code>Collection</code> of Bundle Contexts for bundles |
| * which have listeners to which the specified event will be |
| * delivered. The implementation of this method may remove bundle |
| * contexts from the collection to prevent the event from being |
| * delivered to the associated bundles. The collection supports all |
| * the optional <code>Collection</code> operations except |
| * <code>add</code> and <code>addAll</code>. Attempting to add to the |
| * collection will result in an |
| * <code>UnsupportedOperationException</code>. The collection is not |
| * synchronized. |
| */ |
| void event(ServiceEvent event, |
| Collection/* <? extends BundleContext> */contexts); |
| } |