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/*
 * Copyright (c) 2007, Sosnoski Software Associates Limited. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
 * following conditions are met:
 *
 * Redistributions of source code must retain the above copyright notice, this list of conditions and the following
 * disclaimer. 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. Neither the name of
 * JiBX nor the names of its contributors may be used to endorse or promote products derived from this software without
 * specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS 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 COPYRIGHT OWNER OR 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.
 */

package org.jibx.ws;

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

/**
 * JiBX/WS exception class. This is used for a variety of errors that can be generated by the runtime.
 *
 * @author Dennis M. Sosnoski
 */
public class WsException extends Exception
{
    private static final long serialVersionUID = 3712248471464190364L;
    
    /** Exception that caused this exception. */
    private Throwable m_rootCause;

    /**
     * Constructor from message.
     *
     * @param msg message describing the exception condition
     */

    public WsException(String msg) {
        super(msg);
    }

    /**
     * Constructor from message and wrapped exception.
     *
     * @param msg message describing the exception condition
     * @param root exception which caused this exception
     */

    public WsException(String msg, Throwable root) {
        super(msg);
        m_rootCause = root;
    }

    /**
     * Get root cause exception.
     *
     * @return exception that caused this exception
     */

    public Throwable getRootCause() {
        return m_rootCause;
    }

    /**
     * Build string representation. If there's no wrapped exception this just returns the usual text, otherwise it
     * appends the wrapped exception information to the text generated from this one.
     *
     * @return string representation
     */

    public String toString() {
        if (m_rootCause == null) {
            return super.toString();
        } else {
            return super.toString() + "\nRoot cause: " + m_rootCause.toString();
        }
    }

    /**
     * Print stack trace to standard error. This is an override of the base class method to implement exception
     * chaining.
     */

    public void printStackTrace() {
        super.printStackTrace();
        if (m_rootCause != null) {
            System.err.print("Cause: ");
            m_rootCause.printStackTrace();
        }
    }

    /**
     * Print stack trace to stream. This is an override of the base class method to implement exception chaining.
     *
     * @param s stream for printing stack trace
     */

    public void printStackTrace(PrintStream s) {
        super.printStackTrace(s);
        if (m_rootCause != null) {
            s.print("Cause: ");
            m_rootCause.printStackTrace(s);
        }
    }

    /**
     * Print stack trace to writer. This is an override of the base class method to implement exception chaining.
     *
     * @param s writer for printing stack trace
     */

    public void printStackTrace(PrintWriter s) {
        super.printStackTrace(s);
        if (m_rootCause != null) {
            s.print("Cause: ");
            m_rootCause.printStackTrace(s);
        }
    }
}




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