| /* |
| * 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; |
| |
| /** |
| * Causes an object to be notified when it is bound to |
| * or unbound from a session. The object is notified |
| * by an {@link HttpSessionBindingEvent} object. This may be as a result |
| * of a servlet programmer explicitly unbinding an attribute from a session, |
| * due to a session being invalidated, or due to a session timing out. |
| * |
| * @version $Rev$ $Date$ |
| * @see HttpSession |
| * @see HttpSessionBindingEvent |
| */ |
| public interface HttpSessionBindingListener extends EventListener { |
| /** |
| * Notifies the object that it is being bound to |
| * a session and identifies the session. |
| * |
| * @param event the event that identifies the |
| * session |
| * @see #valueUnbound |
| */ |
| void valueBound(HttpSessionBindingEvent event); |
| |
| |
| /** |
| * Notifies the object that it is being unbound |
| * from a session and identifies the session. |
| * |
| * @param event the event that identifies |
| * the session |
| * @see #valueBound |
| */ |
| void valueUnbound(HttpSessionBindingEvent event); |
| |
| } |
| |