/* ===========================================================

 * JFreeChart : a free chart library for the Java(tm) platform

 * ===========================================================

 *

 * (C) Copyright 2000-2004, by Object Refinery Limited and Contributors.

 *

 * Project Info:  http://www.jfree.org/jfreechart/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., 59 Temple Place, Suite 330,

 * Boston, MA 02111-1307, USA.

 *

 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 

 * in the United States and other countries.]

 *

 * --------------------------

 * AbstractSeriesDataset.java

 * --------------------------

 * (C) Copyright 2001-2004, by Object Refinery Limited.

 *

 * Original Author:  David Gilbert (for Object Refinery Limited);

 * Contributor(s):   -;

 *

 * $Id: AbstractSeriesDataset.java,v 1.1 2004/08/31 15:27:03 mungady Exp $

 *

 * Changes

 * -------

 * 17-Nov-2001 : Version 1 (DG);

 * 28-Mar-2002 : Implemented SeriesChangeListener interface (DG);

 * 04-Oct-2002 : Fixed errors reported by Checkstyle (DG);

 * 04-Feb-2003 : Removed redundant methods (DG);

 * 27-Mar-2003 : Implemented Serializable (DG);

 *

 */



package org.jfree.data.general;



import java.io.Serializable;



/**

 * An abstract implementation of the {@link SeriesDataset} interface, containing a

 * mechanism for registering change listeners.

 */

public abstract class AbstractSeriesDataset extends AbstractDataset

                                            implements SeriesDataset,

                                                       SeriesChangeListener,

                                                       Serializable {



    /**

     * Creates a new dataset.

     */

    protected AbstractSeriesDataset() {

        super();

    }



    /**

     * Returns the number of series in the dataset.

     *

     * @return The series count.

     */

    public abstract int getSeriesCount();



    /**

     * Returns the name of a series.

     *

     * @param series  the series index (zero-based).

     *

     * @return The series name.

     */

    public abstract String getSeriesName(int series);



    /**

     * Called when a series belonging to the dataset changes.

     *

     * @param event  information about the change.

     */

    public void seriesChanged(SeriesChangeEvent event) {

        fireDatasetChanged();

    }



}

