/*
* Copyright 2004 The Apache Software Foundation
*
* 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 javax.servlet.http;

import java.util.EventListener;

    /** Objects that are bound to a session may listen to container
    ** events notifying them that sessions will be passivated and that
    ** session will be activated. A container that migrates session between VMs
    ** or persists sessions is required to notify all attributes bound to sessions
    ** implementing HttpSessionActivationListener.
    **
    * @since 2.3
    */
    
public interface HttpSessionActivationListener extends EventListener { 

    /** Notification that the session is about to be passivated.*/
    public void sessionWillPassivate(HttpSessionEvent se); 
    /** Notification that the session has just been activated.*/
    public void sessionDidActivate(HttpSessionEvent se);
}