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Java > Open Source Codes > org > apache > beehive > netui > pageflow > DoubleSubmitException


1 /*
2  * Copyright 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  * $Header:$
17  */
18 package org.apache.beehive.netui.pageflow;
19
20 import javax.servlet.http.HttpServletResponse JavaDoc;
21 import java.io.IOException JavaDoc;
22
23 /**
24  * Exception thrown when an action marked with the
25  * {@link org.apache.beehive.netui.pageflow.annotations.Jpf.Action#preventDoubleSubmit @Jpf.Action(preventDoubleSubmit=...}
26  * annotation attribute has been submitted to more than once.
27  */
28 public class DoubleSubmitException
29         extends PageFlowException
30         implements ResponseErrorCodeSender
31 {
32     DoubleSubmitException( String JavaDoc actionName, FlowController fc )
33     {
34         super( actionName, fc );
35     }
36
37     protected Object JavaDoc[] getMessageArgs()
38     {
39         return new Object JavaDoc[]{ getActionName(), getFlowControllerURI() };
40     }
41
42     protected String JavaDoc[] getMessageParts()
43     {
44         return new String JavaDoc[]{ "A double-submit occurred for action ", " in page flow ", "." };
45     }
46     
47     public void sendResponseErrorCode( HttpServletResponse JavaDoc response ) throws IOException JavaDoc
48     {
49         response.sendError( HttpServletResponse.SC_BAD_REQUEST, getLocalizedMessage() );
50     }
51     
52     /**
53      * Tell whether the root cause may be session expiration in cases where the requested session ID is different than
54      * the actual session ID. In this case, the answer is <code>true</code>.
55      */
56     public boolean causeMayBeSessionExpiration()
57     {
58         return true;
59     }
60 }
61
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