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JCommon is a free general purpose Java class library that is used in several projects at www.jfree.org, including JFreeChart and JFreeReport.
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/* ========================================================================
 * JCommon : a free general purpose class library for the Java(tm) platform
 * ========================================================================
 *
 * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
 * 
 * Project Info:  http://www.jfree.org/jcommon/index.html
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, 
 * USA.  
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
 * in the United States and other countries.]
 * 
 * ------------------------------
 * ElementDefinitionException.java
 * ------------------------------
 * (C)opyright 2002-2004, by Object Refinery Limited.
 *
 * $Id: ElementDefinitionException.java,v 1.3 2005/10/18 13:25:44 mungady Exp $
 *
 * Changes
 * -------
 * 24-Apr-2002 : Initial version
 * 31-Aug-2002 : Documentation; changed PrintStackTrace for better tracing
 * 29-Apr-2003 : Distilled from the JFreeReport project and moved into JCommon
 */
package org.jfree.xml;

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

import org.xml.sax.Locator;

/**
 * A reportdefinition exception is thrown when the parsing of the report definition
 * failed because invalid or missing attributes are encountered.
 *
 * @author Thomas Morgner
 */
public class ElementDefinitionException extends ParseException {

    /** The parent exception. */
    private Exception parent;

    /**
     * Creates a new ElementDefinitionException without an parent exception and with the given
     * message as explanation.
     *
     * @param message a detail message explaining the reasons for this exception.
     */
    public ElementDefinitionException(final String message) {
        super(message);
    }

    /**
     * Creates a new ElementDefinitionException with an parent exception and with the parents
     * message as explaination.
     *
     * @param e the parentException that caused this exception
     */
    public ElementDefinitionException(final Exception e) {
        this(e, e.getMessage());
    }

    /**
     * Creates a new ElementDefinitionException with an parent exception and with the given
     * message as explaination.
     *
     * @param e the parentException that caused this exception
     * @param message a detail message explaining the reasons for this exception
     */
    public ElementDefinitionException(final Exception e, final String message) {
        this(message);
        this.parent = e;
    }

    /**
     * Creates a new ParseException with the given root exception
     * and the locator.
     *
     * @param e       the exception
     * @param locator the locator of the parser
     */
    public ElementDefinitionException(final Exception e, final Locator locator) {
        super(e, locator);
        this.parent = e;
    }

    /**
     * Creates a new ParseException with the given message and the locator.
     *
     * @param message the message
     * @param locator the locator of the parser
     */
    public ElementDefinitionException(final String message, final Locator locator) {
        super(message, locator);
    }

    /**
     * Creates a new ParseException with the given message, root exception
     * and the locator.
     *
     * @param s       the message
     * @param e       the exception
     * @param locator the locator of the parser
     */
    public ElementDefinitionException(final String s, final Exception e, final Locator locator) {
        super(s, e, locator);
        this.parent = e;
    }

    /**
     * Returns the parent exception.
     *
     * @return the parent exception.
     */
    public Exception getParentException() {
        return this.parent;
    }

    /**
     * Prints the stack trace.  If an inner exception exists, use
     * its stack trace.
     *
     * @param s  the stream for writing to.
     */
    public void printStackTrace(final PrintStream s) {
        super.printStackTrace(s);
        if (this.parent != null) {
            s.print("ParentException:");
            this.parent.printStackTrace(s);
        }
        else {
            s.println("ParentException: ");
        }
    }

    /**
     * Prints the stack trace.  If an inner exception exists, use
     * its stack trace.
     *
     * @param s  the stream for writing to.
     */
    public void printStackTrace(final PrintWriter s) {
        super.printStackTrace(s);
        if (this.parent != null) {
            s.print("ParentException:");
            this.parent.printStackTrace(s);
        }
        else {
            s.println("ParentException: ");
        }
    }

}