2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
17 package javax.servlet.http;
19 import java.util.EventListener;
22 * This listener interface can be implemented in order to get notifications of
23 * changes to the attribute lists of sessions within this web application.
27 public interface HttpSessionAttributeListener extends EventListener {
30 * Notification that an attribute has been added to a session. Called after
31 * the attribute is added.
33 public void attributeAdded(HttpSessionBindingEvent se);
36 * Notification that an attribute has been removed from a session. Called
37 * after the attribute is removed.
39 public void attributeRemoved(HttpSessionBindingEvent se);
42 * Notification that an attribute has been replaced in a session. Called
43 * after the attribute is replaced.
45 public void attributeReplaced(HttpSessionBindingEvent se);