1 /*
2 * The contents of this file are subject to the terms
3 * of the Common Development and Distribution License
4 * (the "License"). You may not use this file except
5 * in compliance with the License.
6 *
7 * You can obtain a copy of the license at
8 * glassfish/bootstrap/legal/CDDLv1.0.txt or
9 * https://glassfish.dev.java.net/public/CDDLv1.0.html.
10 * See the License for the specific language governing
11 * permissions and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL
14 * HEADER in each file and include the License file at
15 * glassfish/bootstrap/legal/CDDLv1.0.txt. If applicable,
16 * add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your
18 * own identifying information: Portions Copyright [yyyy]
19 * [name of copyright owner]
20 *
21 * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
22 */
23
24 package javax.servlet;
25
26 import java.util.EventListener;
27
28 /** Implementations of this interface receive notifications of
29 ** changes to the attribute list on the servlet context of a web application.
30 * To receive notification events, the implementation class
31 * must be configured in the deployment descriptor for the web application.
32 * @see ServletContextAttributeEvent
33 * @since v 2.3
34 */
35
36 public interface ServletContextAttributeListener extends EventListener {
37 /** Notification that a new attribute was added to the servlet context. Called after the attribute is added.*/
38 public void attributeAdded(ServletContextAttributeEvent scab);
39 /** Notification that an existing attribute has been removed from the servlet context. Called after the attribute is removed.*/
40 public void attributeRemoved(ServletContextAttributeEvent scab);
41 /** Notification that an attribute on the servlet context has been replaced. Called after the attribute is replaced. */
42 public void attributeReplaced(ServletContextAttributeEvent scab);
43 }
44