1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one 3 * or more contributor license agreements. See the NOTICE file 4 * distributed with this work for additional information 5 * regarding copyright ownership. The ASF licenses this file 6 * to you under the Apache License, Version 2.0 (the 7 * "License"); you may not use this file except in compliance 8 * with the License. You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, 13 * software distributed under the License is distributed on an 14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 15 * KIND, either express or implied. See the License for the 16 * specific language governing permissions and limitations 17 * under the License. 18 */ 19 20 package javax.servlet; 21 22 23 /** 24 * This is the event class for notifications of changes to the 25 * attributes of the servlet request in an application. 26 * @see ServletRequestAttributeListener 27 * @since Servlet 2.4 28 */ 29 30 public class ServletRequestAttributeEvent extends ServletRequestEvent { 31 private String name; 32 private Object value; 33 34 /** Construct a ServletRequestAttributeEvent giving the servlet context 35 * of this web application, the ServletRequest whose attributes are 36 * changing and the name and value of the attribute. 37 * 38 * @param sc the ServletContext that is sending the event. 39 * @param request the ServletRequest that is sending the event. 40 * @param name the name of the request attribute. 41 * @param value the value of the request attribute. 42 */ 43 public ServletRequestAttributeEvent(ServletContext sc, ServletRequest request, String name, Object value) { 44 super(sc, request); 45 this.name = name; 46 this.value = value; 47 } 48 49 /** 50 * Return the name of the attribute that changed on the ServletRequest. 51 * 52 * @return the name of the changed request attribute 53 */ 54 public String getName() { 55 return this.name; 56 } 57 58 /** 59 * Returns the value of the attribute that has been added, removed or 60 * replaced. If the attribute was added, this is the value of the 61 * attribute. If the attribute was removed, this is the value of the 62 * removed attribute. If the attribute was replaced, this is the old 63 * value of the attribute. 64 * 65 * @return the value of the changed request attribute 66 */ 67 public Object getValue() { 68 return this.value; 69 } 70 }