datasetgroup.java

JFreeChartweb图表

/* ======================================
 * JFreeChart : a free Java chart library
 * ======================================
 *
 * Project Info:  http://www.jfree.org/jfreechart/index.html
 * Project Lead:  David Gilbert ([e-mail]);
 *
 * (C) Copyright 2000-2003, by Object Refinery Limited and Contributors.
 *
 * 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.
 *
 * -----------------
 * DatasetGroup.java
 * -----------------
 * (C) Copyright 2002, 2003, by Object Refinery Limited.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * $Id: DatasetGroup.java,v 1.4 2003/09/03 15:08:51 mungady Exp $
 *
 * Changes
 * -------
 * 07-Oct-2002 : Version 1 (DG);
 * 26-Mar-2003 : Implemented Serializable (DG);
 * 20-Aug-2003 : Implemented Cloneable (DG);
 *
 */

package org.jfree.data;

import java.io.Serializable;

/**
 * A class that is used to group datasets.  The main purpose of this is to implement a
 * shared reader-writer lock among all datasets in the group.
 *
 * @author David Gilbert
 */
public class DatasetGroup implements Cloneable, Serializable {

    /**
     * Constructs a new DatasetGroup.
     */
    public DatasetGroup() {
    }

    /**
     * Clones the group.
     * 
     * @return A clone.
     * 
     * @throws CloneNotSupportedException not by this class.
     */
    public Object clone() throws CloneNotSupportedException {
        return super.clone();    
    }
    
}