/*
 *  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;


import javax.naming.NamingException;


/**
 * An event handler that listens to the changes occurs to
 * {@link DirectoryService}.
 * 
 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
 * @version $Rev$, $Date$
 */
public interface DirectoryServiceListener
{
    /**
     * Invoked before starting up {@link DirectoryService}.
     */
    void beforeStartup( DirectoryService service ) throws NamingException;


    /**
     * Invoked after starting up {@link DirectoryService}.
     */
    void afterStartup( DirectoryService service ) throws NamingException;


    /**
     * Invoked before shutting down {@link DirectoryService}.
     */
    void beforeShutdown( DirectoryService service ) throws NamingException;


    /**
     * Invoked after shutting down {@link DirectoryService}.
     */
    void afterShutdown( DirectoryService service ) throws NamingException;


    /**
     * Invoked before calling {@link DirectoryService#sync()}.
     */
    void beforeSync( DirectoryService service ) throws NamingException;


    /**
     * Invoked after calling {@link DirectoryService#sync()}.
     */
    void afterSync( DirectoryService service ) throws NamingException;
}