Update of /cvsroot/xpg-xml/edu/iicm/xpg/statemachine
In directory usw-pr-cvs1:/tmp/cvs-serv32015
Added Files:
TransitionException.java
Log Message:
new Exception
--- NEW FILE: TransitionException.java ---
/***********************************************************************
* @(#)$RCSfile: TransitionException.java,v $
*
* Copyright (c) 2001 IICM, Graz University of Technology
* Schiesstattgasse 4a, A-8010 Graz, Austria.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License (LGPL)
* as published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
***********************************************************************/
package edu.iicm.xpg.statemachine;
//----------------------------------------------------------------------
/**
* @author Stefan Thalauer
* @version $Revision: 1.1 $
*/
public class TransitionException extends Exception
{
protected Exception exception_;
//----------------------------------------------------------------------
/**
*/
public TransitionException ()
{
super();
exception_ = null;
}
//----------------------------------------------------------------------
/**
*/
public TransitionException (String message)
{
super(message);
exception_ = null;
}
//----------------------------------------------------------------------
/** Create a new TransitionException wrapping an existing exception.
*
* The existing exception will be embedded in the new
* one, and its message will become the default message for
* the TransitionException.
*
* @param exc The exception to be wrapped in a TransitionException.
*/
public TransitionException (Exception exc)
{
super();
exception_ = exc;
}
//----------------------------------------------------------------------
/** Create a new TransitionException from an existing exception.
*
* The existing exception will be embedded in the new
* one, but the new exception will have its own message.
*
* @param message The detail message.
* @param exc The exception to be wrapped in a TransitionException.
*/
public TransitionException (String message, Exception exc)
{
super(message);
exception_ = exc;
}
//----------------------------------------------------------------------
/** Return a detail message for this exception.
*
* If there is an embedded exception, and if the TransitionException
* has no detail message of its own, this method will return
* the detail message from the embedded exception.</p>
*
* @return The error or warning message.
*/
public String getMessage ()
{
String message = super.getMessage();
if (message == null && exception_ != null)
{
return exception_.getMessage();
}
else
{
return message;
}
}
//----------------------------------------------------------------------
/** Return the embedded exception, if any.
*
* @return The embedded exception, or null if there is none.
*/
public Exception getException ()
{
return exception_;
}
//----------------------------------------------------------------------
/** Override toString to pick up any embedded exception.
*
* @return A string representation of this exception.
*/
public String toString ()
{
if (exception_ != null)
{
return exception_.toString();
}
else
{
return super.toString();
}
}
}
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