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1   /*
2    * Redistribution and use of this software and associated documentation
3    * ("Software"), with or without modification, are permitted provided
4    * that the following conditions are met:
5    *
6    * 1. Redistributions of source code must retain copyright
7    *    statements and notices.  Redistributions must also contain a
8    *    copy of this document.
9    *
10   * 2. Redistributions in binary form must reproduce the
11   *    above copyright notice, this list of conditions and the
12   *    following disclaimer in the documentation and/or other
13   *    materials provided with the distribution.
14   *
15   * 3. The name "Exolab" must not be used to endorse or promote
16   *    products derived from this Software without prior written
17   *    permission of Intalio, Inc.  For written permission,
18   *    please contact info@exolab.org.
19   *
20   * 4. Products derived from this Software may not be called "Exolab"
21   *    nor may "Exolab" appear in their names without prior written
22   *    permission of Intalio, Inc. Exolab is a registered
23   *    trademark of Intalio, Inc.
24   *
25   * 5. Due credit should be given to the Exolab Project
26   *    (http://www.exolab.org/).
27   *
28   * THIS SOFTWARE IS PROVIDED BY INTALIO, INC. AND CONTRIBUTORS
29   * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
30   * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
31   * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
32   * INTALIO, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
33   * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
34   * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
35   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
37   * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
38   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
39   * OF THE POSSIBILITY OF SUCH DAMAGE.
40   *
41   * Copyright 2002 (C) Intalio Inc. All Rights Reserved.
42   *
43   * $Id$
44   */
45  package org.exolab.castor.builder.binding;
46  
47  /**
48   * The base exception for the <tt>binding</tt> package. This exception is
49   * nested in order to keep a correct stack trace while nesting the exception
50   * that causes the call to BindingException.
51   *
52   * @author <a href="mailto:blandin@intalio.com">Arnaud Blandin</a>
53   * @version $Version:$ $Date: 2006-04-25 15:08:23 -0600 (Tue, 25 Apr 2006) $
54   */
55  public final class BindingException extends Exception {
56  
57      /** We add this field because an Exception is serializable. */
58      private static final long serialVersionUID = 1726983206974247107L;
59      /** The embedded exception if tunnelling, or null. */
60      private Exception _exception;
61  
62      /**
63       * Creates a new BindingException.
64       *
65       * @param message The error or warning message.
66       */
67      public BindingException(final String message) {
68          super(message);
69          _exception = null;
70      }
71  
72      /**
73       * Creates a new BindingException wrapping an existing Exception.
74       * <p>
75       * The existing Exception will be embedded in the new one, and its message
76       * will become the default message for the BindingException.
77       *
78       * @param exception The Exception to be wrapped in a BindingException.
79       */
80      public BindingException(final Exception exception) {
81          super();
82          _exception = exception;
83      }
84  
85      /**
86       * Creates a new BindingException from an existing exception.
87       * <p>
88       * The existing Exception will be embedded in the new one, but the new
89       * Exception will have its own message.
90       *
91       * @param message The detail message.
92       * @param exception The Exception to be wrapped in a BindingException.
93       */
94      public BindingException(final String message, final Exception exception) {
95          super(message);
96          _exception = exception;
97      }
98  
99     /**
100      * Returns a detailed message for this Exception.
101      * <p>
102      * If there is an embedded Exception, and if the BindingException has no
103      * detail message of its own, this method will return the detail message
104      * from the embedded Exception.
105      *
106      * @return String The error or warning message.
107      */
108     public String getMessage() {
109         String message = super.getMessage();
110 
111         if (message == null && _exception != null) {
112             return _exception.getMessage();
113         }
114         return message;
115     }
116 
117    /**
118     * Returns the embedded Exception, if any.
119     *
120     * @return Exception The embedded Exception, or null if there is none.
121     */
122     public Exception getException() {
123         return _exception;
124     }
125 
126     /**
127      * Overrides printStackTrace to keep the stack trace of the embedded
128      * Exception.
129      */
130     public void printStackTrace() {
131         if (_exception != null) {
132             System.out.println("--------------------------------");
133             System.out.println("Stack Trace for :" + _exception);
134             _exception.printStackTrace();
135             System.out.println("--------------------------------");
136         }
137         super.printStackTrace();
138     }
139 
140     /**
141      * Overrides toString to pick up any embedded Exception.
142      *
143      * @return String A string representation of this Exception.
144      */
145     public String toString() {
146         if (_exception != null) {
147             return _exception.toString();
148         }
149         return super.toString();
150     }
151 
152 }