001 /* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 */ 019 020 // 021 // This source code implements specifications defined by the Java 022 // Community Process. In order to remain compliant with the specification 023 // DO NOT add / change / or delete method signatures! 024 // 025 026 package javax.servlet; 027 028 /** 029 * This is the event class for notifications about changes to the 030 * attributes of the servlet request of a web application. 031 * 032 * @see ServletRequestAttributeListener 033 * 034 * @since Servlet 2.4 035 * 036 * @version $Rev: 467553 $ $Date: 2006-10-25 06:01:51 +0200 (Mi, 25. Okt 2006) $ 037 */ 038 public class ServletRequestAttributeEvent extends ServletRequestEvent { 039 private String name; 040 private Object value; 041 042 /** 043 * Construct a ServletRequestAttributeEvent from the given context for the 044 * given attribute name and attribute value. 045 * 046 * @param sc the ServletContext that is sending the event. 047 * @param request the ServletRequest that is sending the event. 048 * @param name the name of the request attribute. 049 * @param value the value of the request attribute. 050 */ 051 public ServletRequestAttributeEvent(ServletContext sc, ServletRequest request, String name, Object value) { 052 super(sc, request); 053 this.name = name; 054 this.value = value; 055 } 056 057 /** 058 * Return the name of the attribute that changed on the ServletRequest. 059 * 060 * @return String the name of the changed request attribute. 061 */ 062 public String getName() { 063 return this.name; 064 } 065 066 /** 067 * Returns the value of the attribute that has been added removed or 068 * replaced. If the attribute was added, this is the value of the 069 * attribute. If the attribute was removed, this is the value of the 070 * removed attribute. If the attribute was replaced, this is the old 071 * value of the attribute. 072 * 073 * @return Object the value of the changed request attribute. 074 */ 075 public Object getValue() { 076 return this.value; 077 } 078 }