01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * 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: * This is the event class for notifications of changes to the
21: * attributes of the servlet request in an application.
22: * @see ServletRequestAttributeListener
23: * @since Servlet 2.4
24: */
25:
26: public class ServletRequestAttributeEvent extends ServletRequestEvent {
27: private String name;
28: private Object value;
29:
30: /** Construct a ServletRequestAttributeEvent giving the servlet context
31: * of this web application, the ServletRequest whose attributes are
32: * changing and the name and value of the attribute.
33: *
34: * @param sc the ServletContext that is sending the event.
35: * @param request the ServletRequest that is sending the event.
36: * @param name the name of the request attribute.
37: * @param value the value of the request attribute.
38: */
39: public ServletRequestAttributeEvent(ServletContext sc,
40: ServletRequest request, String name, Object value) {
41: super (sc, request);
42: this .name = name;
43: this .value = value;
44: }
45:
46: /**
47: * Return the name of the attribute that changed on the ServletRequest.
48: *
49: * @return the name of the changed request attribute
50: */
51: public String getName() {
52: return this .name;
53: }
54:
55: /**
56: * Returns the value of the attribute that has been added, removed or
57: * replaced. If the attribute was added, this is the value of the
58: * attribute. If the attribute was removed, this is the value of the
59: * removed attribute. If the attribute was replaced, this is the old
60: * value of the attribute.
61: *
62: * @return the value of the changed request attribute
63: */
64: public Object getValue() {
65: return this.value;
66: }
67: }
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