/*
 * $Header: /home/cvs/commons/dbcp-1.0/en/src/org/apache/commons/dbcp/DbcpException.java,v 1.1.1.1 2004/02/13 10:02:03 hioki Exp $
 * $Revision: 1.1.1.1 $
 * $Date: 2004/02/13 10:02:03 $
 *
 * ====================================================================
 *
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 1999-2001 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Commons", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
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 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 *
 */

package org.apache.commons.dbcp;


/**
 * <p>Subclass of <code>RuntimeException</code> that can be used to wrap
 * a <code>SQLException</code> using the "root cause" pattern of JDK 1.4
 * exceptions, but without requiring a 1.4 runtime environment.</p>
 *
 * @author Jonathan Fuerth
 * @author Dan Fraser
 * @version $Revision: 1.1.1.1 $ $Date: 2004/02/13 10:02:03 $
 */

public class DbcpException extends RuntimeException {


    // ----------------------------------------------------------- Constructors


    /**
     * Construct a new runtime exception with <code>null</code> as its
     * detail message.
     */
    public DbcpException() {

        super();

    }


    /**
     * Construct a new runtime exception with the specified detail message.
     *
     * @param message The detail message for this exception
     */
    public DbcpException(String message) {

        this(message, null);

    }


    /**
     * Construct a new runtime exception with the specified detail message
     * and cause.
     *
     * @param message The detail message for this exception
     * @param cause The root cause for this exception
     */
    public DbcpException(String message, Throwable cause) {

        super(message);
        this.cause = cause;

    }


    /**
     * Construct a new runtime exception with the specified cause and a
     * detail message of <code>(cause == null ? null : cause.toString())</code>.
     *
     * @param cause The root cause for this exception
     */
    public DbcpException(Throwable cause) {

        super((cause == null) ? (String) null : cause.toString());
        this.cause = cause;

    }


    // ----------------------------------------------------- Instance Variables


    /**
     * The root cause of this exception (typically an
     * <code>SQLException</code> but this is not required).
     */
    protected Throwable cause = null;


    // --------------------------------------------------------- Public Methods


    /**
     * Return the root cause of this exception (if any).
     */
    public Throwable getCause() {

        return (this.cause);

    }


}