| /* |
| * Copyright 2004 The Apache Software Foundation |
| * |
| * Licensed 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; |
| |
| import java.util.EventListener; |
| |
| /** Implementations of this interface receive notifications of |
| ** changes to the attribute list on the servlet context of a web application. |
| * To receive notification events, the implementation class |
| * must be configured in the deployment descriptor for the web application. |
| * @see ServletContextAttributeEvent |
| * @since v 2.3 |
| */ |
| |
| public interface ServletContextAttributeListener extends EventListener { |
| /** Notification that a new attribute was added to the servlet context. Called after the attribute is added.*/ |
| public void attributeAdded(ServletContextAttributeEvent scab); |
| /** Notification that an existing attribute has been removed from the servlet context. Called after the attribute is removed.*/ |
| public void attributeRemoved(ServletContextAttributeEvent scab); |
| /** Notification that an attribute on the servlet context has been replaced. Called after the attribute is replaced. */ |
| public void attributeReplaced(ServletContextAttributeEvent scab); |
| } |
| |