/*
* 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 javax.servlet.http;
import java.util.EventListener;
/**
* Interface for receiving notification events about HttpSession id changes.
* <p/>
* In order to receive these notification events, the implementation class must be either declared in the deployment
* descriptor of the web application, annotated with WebListener, or registered via one of the addListener methods
* defined on ServletContext.
* <p/>
* The order in which implementations of this interface are invoked is unspecified.
*
* @since Servlet 3.1
*/
public interface HttpSessionIdListener extends EventListener {
/**
* Receives notification that session id has been changed in a session.
*
* @param event
* the HttpSessionBindingEvent containing the session and the name and (old) value of the attribute that
* was replaced
* @param oldSessionId
* the old session id
*/
void sessionIdChanged(HttpSessionEvent event, String oldSessionId);
}