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  }