1   /*
    2   * Licensed to the Apache Software Foundation (ASF) under one or more
    3   * contributor license agreements.  See the NOTICE file distributed with
    4   * this work for additional information regarding copyright ownership.
    5   * The ASF licenses this file to You under the Apache License, Version 2.0
    6   * (the "License"); you may not use this file except in compliance with
    7   * the License.  You may obtain a copy of the License at
    8   *
    9   *     http://www.apache.org/licenses/LICENSE-2.0
   10   *
   11   * Unless required by applicable law or agreed to in writing, software
   12   * distributed under the License is distributed on an "AS IS" BASIS,
   13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   14   * See the License for the specific language governing permissions and
   15   * limitations under the License.
   16   */
   17   package javax.servlet.http;
   18   
   19   import java.util.EventListener;
   20   
   21       /** Objects that are bound to a session may listen to container
   22       ** events notifying them that sessions will be passivated and that
   23       ** session will be activated. A container that migrates session between VMs
   24       ** or persists sessions is required to notify all attributes bound to sessions
   25       ** implementing HttpSessionActivationListener.
   26       **
   27       * @since 2.3
   28       */
   29       
   30   public interface HttpSessionActivationListener extends EventListener { 
   31   
   32       /** Notification that the session is about to be passivated.*/
   33       public void sessionWillPassivate(HttpSessionEvent se); 
   34       /** Notification that the session has just been activated.*/
   35       public void sessionDidActivate(HttpSessionEvent se);
   36   } 
   37