1 /*

     2  * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    25 

    26 /*

    27  * @(#)MessagingException.java        1.10 02/06/13

    28  */

    29 

    30 

    31 

    32 package com.sun.xml.internal.messaging.saaj.packaging.mime;

    33 

    34 

    35 /**

    36  * The base class for all exceptions thrown by the Messaging classes

    37  *

    38  * @author John Mani

    39  * @author Bill Shannon

    40  */

    41 

    42 public class MessagingException extends Exception {

    43 

    44     /**

    45      * The next exception in the chain.

    46      *

    47      * @serial

    48      */

    49     private Exception next;

    50 

    51     /**

    52      * Constructs a MessagingException with no detail message.

    53      */

    54     public MessagingException() {

    55         super();

    56     }

    57 

    58     /**

    59      * Constructs a MessagingException with the specified detail message.

    60      * @param s         the detail message

    61      */

    62     public MessagingException(String s) {

    63         super(s);

    64     }

    65 

    66     /**

    67      * Constructs a MessagingException with the specified

    68      * Exception and detail message. The specified exception is chained

    69      * to this exception.

    70      * @param s         the detail message

    71      * @param e         the embedded exception

    72      * @see     #getNextException

    73      * @see     #setNextException

    74      */

    75     public MessagingException(String s, Exception e) {

    76         super(s);

    77         next = e;

    78     }

    79 

    80     /**

    81      * Get the next exception chained to this one. If the

    82      * next exception is a MessagingException, the chain

    83      * may extend further.

    84      *

    85      * @return  next Exception, null if none.

    86      */

    87     public synchronized Exception getNextException() {

    88         return next;

    89     }

    90 

    91     /**

    92      * Add an exception to the end of the chain. If the end

    93      * is <strong>not</strong> a MessagingException, this

    94      * exception cannot be added to the end.

    95      *

    96      * @param   ex      the new end of the Exception chain

    97      * @return          <code>true</code> if the this Exception

    98      *                  was added, <code>false</code> otherwise.

    99      */

   100     public synchronized boolean setNextException(Exception ex) {

   101         Exception theEnd = this;

   102         while (theEnd instanceof MessagingException &&

   103                ((MessagingException)theEnd).next != null) {

   104             theEnd = ((MessagingException)theEnd).next;

   105         }

   106         // If the end is a MessagingException, we can add this

   107         // exception to the chain.

   108         if (theEnd instanceof MessagingException) {

   109             ((MessagingException)theEnd).next = ex;

   110             return true;

   111         } else

   112             return false;

   113     }

   114 

   115     /**

   116      * Produce the message, include the message from the nested

   117      * exception if there is one.

   118      */

   119     public String getMessage() {

   120         if (next == null)

   121             return super.getMessage();

   122         Exception n = next;

   123         String s = super.getMessage();

   124         StringBuffer sb = new StringBuffer(s == null ? "" : s);

   125         while (n != null) {

   126             sb.append(";\n  nested exception is:\n\t");

   127             if (n instanceof MessagingException) {

   128                 MessagingException mex = (MessagingException)n;

   129                 sb.append(n.getClass().toString());

   130                 String msg = mex.getSuperMessage();

   131                 if (msg != null) {

   132                     sb.append(": ");

   133                     sb.append(msg);

   134                 }

   135                 n = mex.next;

   136             } else {

   137                 sb.append(n.toString());

   138                 n = null;

   139             }

   140         }

   141         return sb.toString();

   142     }

   143 

   144     private String getSuperMessage() {

   145         return super.getMessage();

   146     }

   147 }