| /* |
| * 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. |
| * |
| * @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 |
| */ |
| public 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 |
| */ |
| public void valueUnbound(HttpSessionBindingEvent event); |
| } |