ServletContextAttributeEvent


1   /*
2   * Licensed to the Apache Software Foundation (ASF) under one or more
3   * contributor license agreements.  See the NOTICE file distributed with
4   * this work for additional information regarding copyright ownership.
5   * The ASF licenses this file to You under the Apache License, Version 2.0
6   * (the "License"); you may not use this file except in compliance with
7   * the License.  You may obtain a copy of the License at
8   *
9   *     http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17  package javax.servlet;
18  
19  
20      /** 
21      * This is the event class for notifications about changes to the attributes of the
22      *  servlet context of a web application.
23      * @see ServletContextAttributeListener
24       * @since   v 2.3
25      */
26  
27  public class ServletContextAttributeEvent extends ServletContextEvent   { 
28      private String   name;
29      private Object   value;
30  
31      /** Construct a ServletContextAttributeEvent from the given context for the
32      ** given attribute name and attribute value. 
33      */
34      public ServletContextAttributeEvent(ServletContext   source, String   name, Object   value) {
35          super(source);
36          this.name = name;
37          this.value = value;
38      }
39      
40      /**
41      * Return the name of the attribute that changed on the ServletContext.
42      *
43      */
44      public String   getName() {
45          return this.name;
46      }
47      
48      /**
49      * Returns the value of the attribute that has been added, removed, or replaced.
50      * If the attribute was added, this is the value of the attribute. If the attribute was
51      * removed, this is the value of the removed attribute. If the attribute was replaced, this
52      * is the old value of the attribute.
53      *
54      */
55      
56      public Object   getValue() {
57          return this.value;   
58      }
59  }
60  
61
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