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


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 org.apache.beehive.netui.pageflow.internal.ReturnToException;
21
22
23 /**
24  * Exception that occurs when the
25  * <code>navigateTo={@link org.apache.beehive.netui.pageflow.annotations.Jpf.NavigateTo#previousAction previousAction}</code>,
26  * <code>navigateTo={@link org.apache.beehive.netui.pageflow.annotations.Jpf.NavigateTo#currentPage currentPage}</code>, or
27  * <code>navigateTo={@link org.apache.beehive.netui.pageflow.annotations.Jpf.NavigateTo#previousPage previousPage}</code>
28  * attribute is used on a {@link org.apache.beehive.netui.pageflow.annotations.Jpf.Forward &#64;Jpf.Forward}, a
29  * {@link org.apache.beehive.netui.pageflow.annotations.Jpf.SimpleAction &#64;Jpf.SimpleAction}, or a
30  * {@link org.apache.beehive.netui.pageflow.annotations.Jpf.ConditionalForward &#64;Jpf.ConditionalForward},
31  * but there is no current page flow. This may happen when the user session expires, or when the web application has
32  * been redeployed.
33  */
34 public class NoCurrentPageFlowException extends ReturnToException
35 {
36     public NoCurrentPageFlowException( String JavaDoc actionName, Forward fwd )
37     {
38         super( actionName, fwd, null );
39     }
40
41     protected String JavaDoc[] getMessageParts()
42     {
43         return new String JavaDoc[]{ "No current page flow for return-to=\"", "\" on action ", "." };
44     }
45
46     /**
47      * Tell whether the root cause may be session expiration in cases where the requested session ID is different than
48      * the actual session ID. In this case, the answer is <code>true</code>.
49      */
50     public boolean causeMayBeSessionExpiration()
51     {
52         return true;
53     }
54 }
55
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