/*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2002-2003 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 acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Xalan" 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",
 *    nor may "Apache" appear in their name, without prior written
 *    permission of the Apache Software Foundation.
 *
 * 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
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * 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 and was
 * originally based on software copyright (c) 2002, International
 * Business Machines Corporation., http://www.ibm.com.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */
package org.apache.xpath;

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


/**
 * Implement a common exception object that all XPath classes 
 * will throw in case of an error.
 */
public class XPath20Exception extends Exception
{
    /**
     * Contain our nested exception.
     */
    private Exception m_e;

    /**
     * Construct an XPath20Exception with a specified nested exception.  
     *
     * @param e exception to nest
     */
    public XPath20Exception(Exception e)
    {
        super();

        m_e = e;
    }

    /**
     * Construct an XPath20Exception with a specified message
     *
     * @see java.lang.Throwable#Throwable(String)
     */
    public XPath20Exception(String msg)
    {
        super(msg);
    }
    
    // Methods
    
    

    /**
     * @see java.lang.Throwable#getLocalizedMessage()
     */
    public String getLocalizedMessage()
    {
        return (m_e == null) ? super.getLocalizedMessage() : m_e.getLocalizedMessage();
    }

    /**
     * @see java.lang.Throwable#getMessage()
     */
    public String getMessage()
    {
        return (m_e == null) ? super.getMessage() : m_e.getMessage();
    }

    /**
     * @see java.lang.Throwable#printStackTrace()
     */
    public void printStackTrace()
    {
        super.printStackTrace();
        System.out.println("-------------------");
        m_e.printStackTrace();
    }

    /**
     * @see java.lang.Throwable#printStackTrace(PrintStream)
     */
    public void printStackTrace(PrintStream s)
    {
        super.printStackTrace(s);
        s.println("----------------");
        m_e.printStackTrace(s);
    }

    /**
     * @see java.lang.Throwable#printStackTrace(PrintWriter)
     */
    public void printStackTrace(PrintWriter s)
    {
        super.printStackTrace(s);
        s.println("----------------");
        m_e.printStackTrace(s);
    }
}