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dbUnit is a JUnit extension (also usable from Ant and Maven) targeted for database-driven projects that, among other things, puts your database into a known state between test runs. This is an excellent way to avoid the myriad of problems that can occur when one test case corrupts the database and causes subsequent tests to fail or exacerbate the damage.

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/*
 *
 * The DbUnit Database Testing Framework
 * Copyright (C)2002-2004, DbUnit.org
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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 library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

package org.dbunit;

import java.io.PrintStream;
import java.io.PrintWriter;

/**
 * @author Manuel Laflamme
 * @version $Revision: 398 $
 */
public class DatabaseUnitRuntimeException extends RuntimeException
{
    private final Throwable _e;

    /**
     * Constructs an DatabaseUnitRuntimeException with no specified
     * detail message and no encapsulated exception.
     */
    public DatabaseUnitRuntimeException()
    {
        super();
        _e = null;
    }

    /**
     * Constructs an DatabaseUnitRuntimeException with the specified
     * detail message and no encapsulated exception.
     */
    public DatabaseUnitRuntimeException(String msg)
    {
        super(msg);
        _e = null;
    }

    /**
     * Constructs an DatabaseUnitRuntimeException with the specified
     * detail message and encapsulated exception.
     */
    public DatabaseUnitRuntimeException(String msg, Throwable e)
    {
        super(msg);
        _e = e;
    }

    /**
     * Constructs an DatabaseUnitRuntimeException with the encapsulated
     * exception and use its message as detail message.
     */
    public DatabaseUnitRuntimeException(Throwable e)
    {
        super(e.toString());
        _e = e;
    }

    /**
     * Returns the encapsuled exception or null if none.
     */
    public Throwable getException()
    {
        return _e;
    }

    //////////////////////////////////////////////////////////////////////
    // Exception class

    /**
     *
     */
    public void printStackTrace()
    {
        super.printStackTrace();
        if (_e != null)
            _e.printStackTrace();
    }

    /**
     *
     */
    public void printStackTrace(PrintStream s)
    {
        super.printStackTrace(s);
        if (_e != null)
            _e.printStackTrace(s);
    }

    /**
     *
     */
    public void printStackTrace(PrintWriter s)
    {
        super.printStackTrace(s);
        if (_e != null)
            _e.printStackTrace(s);
    }
}