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1   /**
2    * JDBM LICENSE v1.00
3    *
4    * Redistribution and use of this software and associated documentation
5    * ("Software"), with or without modification, are permitted provided
6    * that the following conditions are met:
7    *
8    * 1. Redistributions of source code must retain copyright
9    *    statements and notices.  Redistributions must also contain a
10   *    copy of this document.
11   *
12   * 2. Redistributions in binary form must reproduce the
13   *    above copyright notice, this list of conditions and the
14   *    following disclaimer in the documentation and/or other
15   *    materials provided with the distribution.
16   *
17   * 3. The name "JDBM" must not be used to endorse or promote
18   *    products derived from this Software without prior written
19   *    permission of Cees de Groot.  For written permission,
20   *    please contact cg@cdegroot.com.
21   *
22   * 4. Products derived from this Software may not be called "JDBM"
23   *    nor may "JDBM" appear in their names without prior written
24   *    permission of Cees de Groot.
25   *
26   * 5. Due credit should be given to the JDBM Project
27   *    (http://jdbm.sourceforge.net/).
28   *
29   * THIS SOFTWARE IS PROVIDED BY THE JDBM PROJECT AND CONTRIBUTORS
30   * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
31   * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
32   * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
33   * CEES DE GROOT OR ANY CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
34   * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
35   * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
36   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
37   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
38   * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
39   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
40   * OF THE POSSIBILITY OF SUCH DAMAGE.
41   *
42   * Copyright 2001 (C) Alex Boisvert. All Rights Reserved.
43   * Contributions are Copyright (C) 2001 by their associated contributors.
44   *
45   */
46  
47  package jdbm.helper;
48  
49  import java.io.PrintStream;
50  import java.io.PrintWriter;
51  
52  /**
53   * A run-time exception that wraps another exception. The printed stack
54   * trace will be that of the wrapped exception.
55   *
56   * @author <a href="mailto:boisvert@intalio.com">Alex Boisvert</a>
57   * @version $Id: WrappedRuntimeException.java,v 1.1 2002/05/31 06:33:20 boisvert Exp $
58   */
59  public class WrappedRuntimeException
60      extends RuntimeException
61  {
62  
63  
64      /**
65       * The underlying exception.
66       */
67      private final Exception _except;
68  
69  
70      /**
71       * Constructs a new runtime exception based on a checked exception.
72       *
73       * @param message The error message
74       * @param except The checked exception
75       */
76      public WrappedRuntimeException( String message, Exception except )
77      {
78          super( message == null ? "No message available" : message );
79  
80          if ( except instanceof WrappedRuntimeException &&
81               ( (WrappedRuntimeException) except )._except != null )
82          {
83              _except = ( (WrappedRuntimeException) except )._except;
84          } else {
85              _except = except;
86          }
87      }
88  
89  
90      /**
91       * Constructs a new runtime exception based on a checked exception.
92       *
93       * @param except The checked exception
94       */
95      public WrappedRuntimeException( Exception except )
96      {
97          super( except == null || except.getMessage() == null ? "No message available" : except.getMessage() );
98  
99          if ( except instanceof WrappedRuntimeException &&
100              ( (WrappedRuntimeException) except )._except != null )
101         {
102             _except = ( (WrappedRuntimeException) except )._except;
103         } else {
104             _except = except;
105         }
106     }
107 
108 
109     /**
110      * Returns the exception wrapped by this runtime exception.
111      *
112      * @return The exception wrapped by this runtime exception
113      */
114     public Exception getException()
115     {
116         return _except;
117     }
118 
119 
120     public void printStackTrace()
121     {
122         if ( _except == null ) {
123             super.printStackTrace();
124         } else {
125             _except.printStackTrace();
126         }
127     }
128 
129 
130     public void printStackTrace( PrintStream stream )
131     {
132         if ( _except == null ) {
133             super.printStackTrace( stream );
134         } else {
135             _except.printStackTrace( stream );
136         }
137     }
138 
139 
140     public void printStackTrace( PrintWriter writer )
141     {
142         if ( _except == null ) {
143             super.printStackTrace( writer );
144         } else {
145             _except.printStackTrace( writer );
146         }
147     }
148 
149 }
150 
151