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1 /* |
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. Oracle designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Oracle in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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24 */ |
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25 |
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26 /* |
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27 * @(#)MessagingException.java 1.10 02/06/13 |
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28 */ |
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29 |
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30 |
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31 |
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32 package com.sun.xml.internal.messaging.saaj.packaging.mime; |
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33 |
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34 |
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35 /** |
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36 * The base class for all exceptions thrown by the Messaging classes |
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37 * |
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38 * @author John Mani |
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39 * @author Bill Shannon |
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40 */ |
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41 |
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42 public class MessagingException extends Exception { |
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43 |
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44 /** |
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45 * The next exception in the chain. |
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46 * |
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47 * @serial |
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48 */ |
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49 private Exception next; |
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50 |
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51 /** |
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52 * Constructs a MessagingException with no detail message. |
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53 */ |
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54 public MessagingException() { |
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55 super(); |
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56 } |
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57 |
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58 /** |
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59 * Constructs a MessagingException with the specified detail message. |
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60 * @param s the detail message |
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61 */ |
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62 public MessagingException(String s) { |
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63 super(s); |
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64 } |
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65 |
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66 /** |
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67 * Constructs a MessagingException with the specified |
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68 * Exception and detail message. The specified exception is chained |
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69 * to this exception. |
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70 * @param s the detail message |
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71 * @param e the embedded exception |
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72 * @see #getNextException |
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73 * @see #setNextException |
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74 */ |
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75 public MessagingException(String s, Exception e) { |
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76 super(s); |
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77 next = e; |
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78 } |
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79 |
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80 /** |
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81 * Get the next exception chained to this one. If the |
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82 * next exception is a MessagingException, the chain |
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83 * may extend further. |
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84 * |
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85 * @return next Exception, null if none. |
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86 */ |
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87 public Exception getNextException() { |
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88 return next; |
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89 } |
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90 |
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91 /** |
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92 * Add an exception to the end of the chain. If the end |
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93 * is <strong>not</strong> a MessagingException, this |
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94 * exception cannot be added to the end. |
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95 * |
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96 * @param ex the new end of the Exception chain |
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97 * @return <code>true</code> if the this Exception |
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98 * was added, <code>false</code> otherwise. |
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99 */ |
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100 public synchronized boolean setNextException(Exception ex) { |
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101 Exception theEnd = this; |
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102 while (theEnd instanceof MessagingException && |
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103 ((MessagingException)theEnd).next != null) { |
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104 theEnd = ((MessagingException)theEnd).next; |
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105 } |
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106 // If the end is a MessagingException, we can add this |
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107 // exception to the chain. |
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108 if (theEnd instanceof MessagingException) { |
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109 ((MessagingException)theEnd).next = ex; |
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110 return true; |
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111 } else |
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112 return false; |
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113 } |
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114 |
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115 /** |
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116 * Produce the message, include the message from the nested |
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117 * exception if there is one. |
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118 */ |
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119 public String getMessage() { |
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120 if (next == null) |
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121 return super.getMessage(); |
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122 Exception n = next; |
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123 String s = super.getMessage(); |
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124 StringBuffer sb = new StringBuffer(s == null ? "" : s); |
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125 while (n != null) { |
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126 sb.append(";\n nested exception is:\n\t"); |
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127 if (n instanceof MessagingException) { |
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128 MessagingException mex = (MessagingException)n; |
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129 sb.append(n.getClass().toString()); |
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130 String msg = mex.getSuperMessage(); |
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131 if (msg != null) { |
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132 sb.append(": "); |
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133 sb.append(msg); |
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134 } |
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135 n = mex.next; |
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136 } else { |
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137 sb.append(n.toString()); |
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138 n = null; |
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139 } |
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140 } |
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141 return sb.toString(); |
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142 } |
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143 |
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144 private String getSuperMessage() { |
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145 return super.getMessage(); |
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146 } |
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147 } |