libjava/classpath/gnu/javax/crypto/assembly/TransformerException.java

   1 /* TransformerException.java --
   2    Copyright (C) 2003, 2006 Free Software Foundation, Inc.
   3
   4 This file is a part of GNU Classpath.
   5
   6 GNU Classpath is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2 of the License, or (at
   9 your option) any later version.
  10
  11 GNU Classpath is distributed in the hope that it will be useful, but
  12 WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Classpath; if not, write to the Free Software
  18 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
  19 USA
  20
  21 Linking this library statically or dynamically with other modules is
  22 making a combined work based on this library.  Thus, the terms and
  23 conditions of the GNU General Public License cover the whole
  24 combination.
  25
  26 As a special exception, the copyright holders of this library give you
  27 permission to link this library with independent modules to produce an
  28 executable, regardless of the license terms of these independent
  29 modules, and to copy and distribute the resulting executable under
  30 terms of your choice, provided that you also meet, for each linked
  31 independent module, the terms and conditions of the license of that
  32 module.  An independent module is a module which is not derived from
  33 or based on this library.  If you modify this library, you may extend
  34 this exception to your version of the library, but you are not
  35 obligated to do so.  If you do not wish to do so, delete this
  36 exception statement from your version.  */
  37
  38
  39 package gnu.javax.crypto.assembly;
  40
  41 import java.io.PrintStream;
  42 import java.io.PrintWriter;
  43
  44 /**
  45  */
  46 public class TransformerException extends Exception
  47 {
  48
  49   // Constants and variables
  50   // -------------------------------------------------------------------------
  51
  52   private Throwable _exception = null;
  53
  54   // Constructor(s)
  55   // -------------------------------------------------------------------------
  56
  57   public TransformerException()
  58   {
  59     super();
  60   }
  61
  62   public TransformerException(String details)
  63   {
  64     super(details);
  65   }
  66
  67   public TransformerException(Throwable cause)
  68   {
  69     super();
  70
  71     this._exception = cause;
  72   }
  73
  74   public TransformerException(String details, Throwable cause)
  75   {
  76     super(details);
  77
  78     this._exception = cause;
  79   }
  80
  81   // Class methods
  82   // -------------------------------------------------------------------------
  83
  84   // Instant methods
  85   // -------------------------------------------------------------------------
  86
  87   public Throwable getCause()
  88   {
  89     return _exception;
  90   }
  91
  92   /**
  93    * Prints this exception's stack trace to <code>System.err</code>. If this
  94    * exception has a root exception; the stack trace of the root exception is
  95    * also printed to <code>System.err</code>.
  96    */
  97   public void printStackTrace()
  98   {
  99     super.printStackTrace();
 100     if (_exception != null)
 101       {
 102         _exception.printStackTrace();
 103       }
 104   }
 105
 106   /**
 107    * Prints this exception's stack trace to a print stream. If this exception
 108    * has a root exception; the stack trace of the root exception is also
 109    * printed to the print stream.
 110    *
 111    * @param ps the non-null print stream to which to print.
 112    */
 113   public void printStackTrace(PrintStream ps)
 114   {
 115     super.printStackTrace(ps);
 116     if (_exception != null)
 117       {
 118         _exception.printStackTrace(ps);
 119       }
 120   }
 121
 122   /**
 123    * Prints this exception's stack trace to a print writer. If this exception
 124    * has a root exception; the stack trace of the root exception is also
 125    * printed to the print writer.
 126    *
 127    * @param pw the non-null print writer to use for output.
 128    */
 129   public void printStackTrace(PrintWriter pw)
 130   {
 131     super.printStackTrace(pw);
 132     if (_exception != null)
 133       {
 134         _exception.printStackTrace(pw);
 135       }
 136   }
 137
 138   /**
 139    * Returns the string representation of this exception. The string
 140    * representation contains this exception's class name, its detailed
 141    * messsage, and if it has a root exception, the string representation of the
 142    * root exception. This string representation is meant for debugging and not
 143    * meant to be interpreted programmatically.
 144    *
 145    * @return the non-null string representation of this exception.
 146    * @see Throwable#getMessage()
 147    */
 148   public String toString()
 149   {
 150     StringBuffer sb = new StringBuffer(this.getClass().getName()).append(": ").append(
 151                                                                                       super.toString());
 152     if (_exception != null)
 153       {
 154         sb.append("; caused by: ").append(_exception.toString());
 155       }
 156     return sb.toString();
 157   }
 158 }