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