| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.directory.server.core.event; |
| |
| |
| import java.util.List; |
| |
| |
| |
| |
| /** |
| * Interface used by the DirectoryService to manage subscriptions for DIT |
| * change notifications. |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| * @version $Rev$, $Date$ |
| */ |
| public interface EventService |
| { |
| /** |
| * Registers a DirectoryListener for notification on any and all change |
| * events on the DIT. |
| * |
| * @param listener the DirectoryListener to deliver notifications to |
| */ |
| void addListener( DirectoryListener listener ); |
| |
| |
| /** |
| * Registers a DirectoryListener for notification on change events on the |
| * DIT matching some notification criteria. |
| * |
| * @param listener the DirectoryListener to deliver notifications to |
| * @param criteria the parameterized criteria for delivering change events |
| * @throws Exception |
| */ |
| void addListener( DirectoryListener listener, NotificationCriteria criteria ) throws Exception; |
| |
| |
| /** |
| * Removes the listener from this EventService preventing all events |
| * registered from being delivered to it. |
| * |
| * @param listener the DirectoryListener to stop delivering notifications to |
| */ |
| void removeListener( DirectoryListener listener ); |
| |
| |
| /** |
| * Lists the listeners registered with this EventService. |
| */ |
| List<RegistrationEntry> getRegistrationEntries(); |
| } |