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Java > Open Source Codes > com > caucho > ejb > DuplicateKeyWrapper


1 /*
2  * Copyright (c) 1998-2006 Caucho Technology -- all rights reserved
3  *
4  * This file is part of Resin(R) Open Source
5  *
6  * Each copy or derived work must preserve the copyright notice and this
7  * notice unmodified.
8  *
9  * Resin Open Source is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * Resin Open Source is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17  * of NON-INFRINGEMENT. See the GNU General Public License for more
18  * details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with Resin Open Source; if not, write to the
22  * Free SoftwareFoundation, Inc.
23  * 59 Temple Place, Suite 330
24  * Boston, MA 02111-1307 USA
25  *
26  * @author Scott Ferguson
27  *
28  * $Id: DuplicateKeyWrapper.java,v 1.2 2004/09/29 00:13:00 cvs Exp $
29  */
30
31 package com.caucho.ejb;
32
33 import com.caucho.util.ExceptionWrapper;
34
35 /**
36  * Wraps the actual exception with an EJB exception
37  */
38 public class DuplicateKeyWrapper extends javax.ejb.DuplicateKeyException JavaDoc
39   implements ExceptionWrapper {
40   private Throwable JavaDoc rootCause;
41
42   /**
43    * Create a basic DuplicateKeyWrapper with a message.
44    *
45    * @param msg the exception message.
46    */
47   public DuplicateKeyWrapper(String JavaDoc msg)
48   {
49     super(msg);
50   }
51
52   /**
53    * Create a DuplicateKeyWrapper wrapping a root exception.
54    *
55    * @param rootCause the underlying wrapped exception.
56    */
57   public DuplicateKeyWrapper(Throwable JavaDoc rootCause)
58   {
59     super(rootCause.getMessage());
60
61     this.rootCause = rootCause;
62   }
63
64   /**
65    * Returns the root exception if it exists.
66    *
67    * @return the underlying wrapped exception.
68    */
69   public Throwable JavaDoc getRootCause()
70   {
71     return rootCause;
72   }
73
74   /**
75    * Returns the appropriate exception message.
76    */
77   public String JavaDoc getMessage()
78   {
79     if (rootCause != null)
80       return rootCause.getMessage();
81     else
82       return super.getMessage();
83   }
84
85   /**
86    * Print the exception as a string.
87    */
88   public String JavaDoc toString()
89   {
90     if (rootCause == null)
91       return super.toString();
92     else
93       return getClass().getName() + ": " + rootCause;
94   }
95 }
96
97
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