/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package javax.servlet;
import java.util.EventListener;
/**
* Interface for a listener receiving events when any of the ServletContext
* attributes change.
*
* @since Servlet 2.3
*/
public interface ServletContextAttributeListener extends EventListener {
/**
* Callback when a ServletContext attribute is added.
*
* @param event the event for the added attribute event.
*/
public void attributeAdded(ServletContextAttributeEvent event);
/**
* Callback when a ServletContext attribute is removed.
*
* @param event the event for the removed attribute event.
*/
public void attributeRemoved(ServletContextAttributeEvent event);
/**
* Callback when a ServletContext attribute is replaced.
*
* @param event the event for the replaced attribute event.
*/
public void attributeReplaced(ServletContextAttributeEvent event);
}