Source for java.rmi.server.ServerCloneException

   1: /* ServerCloneException.java -- a UnicastRemoteObject could not be cloned
   2:    Copyright (c) 1996, 1997, 1998, 1999, 2002 Free Software Foundation, Inc.
   3: 
   4: This file is 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, or (at your option)
   9: 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; see the file COPYING.  If not, write to the
  18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19: 02110-1301 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: package java.rmi.server;
  39: 
  40: /**
  41:  * Thrown if a remote exception occurs during the cloning process of a
  42:  * <code>UnicastRemoteObject</code>.
  43:  *
  44:  * @author unknown
  45:  * @see UnicastRemoteObject#clone()
  46:  * @since 1.1
  47:  * @status updated to 1.4
  48:  */
  49: public class ServerCloneException extends CloneNotSupportedException
  50: {
  51:   /**
  52:    * Compatible with JDK 1.1+.
  53:    */
  54:   private static final long serialVersionUID = 6617456357664815945L;
  55: 
  56:   /**
  57:    * The cause of this exception. This pre-dates the exception chaining
  58:    * of Throwable; and although you can change this field, you are wiser
  59:    * to leave it alone.
  60:    *
  61:    * @serial the exception cause
  62:    */
  63:   public Exception detail;
  64: 
  65:   /**
  66:    * Create an exception with a message.
  67:    *
  68:    * @param s the message
  69:    */
  70:   public ServerCloneException(String s)
  71:   {
  72:     this(s, null);
  73:   }
  74: 
  75:   /**
  76:    * Create an exception with a message and a cause.
  77:    *
  78:    * @param s the message
  79:    * @param e the cause
  80:    */
  81:   public ServerCloneException(String s, Exception e)
  82:   {
  83:     super(s);
  84:     initCause(e);
  85:     detail = e;
  86:   }
  87: 
  88:   /**
  89:    * This method returns a message indicating what went wrong, in this
  90:    * format:
  91:    * <code>super.getMessage() + (detail == null ? ""
  92:    *    : "; nested exception is:\n\t" + detail)</code>.
  93:    *
  94:    * @return the chained message
  95:    */
  96:   public String getMessage()
  97:   {
  98:     if (detail == this || detail == null)
  99:       return super.getMessage();
 100:     return super.getMessage() + "; nested exception is:\n\t" + detail;
 101:   }
 102: 
 103:   /**
 104:    * Returns the cause of this exception. Note that this may not be the
 105:    * original cause, thanks to the <code>detail</code> field being public
 106:    * and non-final (yuck). However, to avoid violating the contract of
 107:    * Throwable.getCause(), this returns null if <code>detail == this</code>,
 108:    * as no exception can be its own cause.
 109:    *
 110:    * @return the cause
 111:    * @since 1.4
 112:    */
 113:   public Throwable getCause()
 114:   {
 115:     return detail == this ? null : detail;
 116:   }
 117: }