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Java > Open Source Codes > org > apache > taglibs > session > InvalidateTag


1 /*
2  * Copyright 1999,2004 The Apache Software Foundation.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16
17 package org.apache.taglibs.session;
18
19 import java.util.*;
20 import javax.servlet.*;
21 import javax.servlet.http.*;
22 import javax.servlet.jsp.*;
23 import javax.servlet.jsp.tagext.*;
24
25 /**
26  * JSP Tag <b>invalidate</b>, used to make a session invalid and remove it.
27  * <p>
28  * JSP Tag Lib Descriptor
29  * <p><pre>
30  * &lt;name&gt;invalidate&lt;/name&gt;
31  * &lt;tagclass&gt;org.apache.taglibs.session.InvalidateTag&lt;/tagclass&gt;
32  * &lt;bodycontent&gt;empty&lt;/bodycontent&gt;
33  * &lt;info&gt;Invalidate a user session and remove it.&lt;/info&gt;
34  * </pre>
35  *
36  * @author Glenn Nielsen
37  */
38
39 public class InvalidateTag extends TagSupport
40 {
41     /**
42      * Makes the session invalid
43      *
44      * @return SKIP_BODY
45      */
46     public final int doStartTag() throws JspException
47     {
48     pageContext.getSession().invalidate();
49     return SKIP_BODY;
50     }
51 }
52
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