001 /* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 */ 019 020 package javax.servlet.http; 021 022 import java.util.EventListener; 023 024 /** Objects that are bound to a session may listen to container 025 ** events notifying them that sessions will be passivated and that 026 ** session will be activated. A container that migrates session between VMs 027 ** or persists sessions is required to notify all attributes bound to sessions 028 ** implementing HttpSessionActivationListener. 029 ** 030 * @since 2.3 031 */ 032 033 public interface HttpSessionActivationListener extends EventListener { 034 035 /** Notification that the session is about to be passivated.*/ 036 public void sessionWillPassivate(HttpSessionEvent se); 037 /** Notification that the session has just been activated.*/ 038 public void sessionDidActivate(HttpSessionEvent se); 039 } 040