    001    /* ===========================================================
    002     * JFreeChart : a free chart library for the Java(tm) platform
    003     * ===========================================================
    004     *
    005     * (C) Copyright 2000-2008, by Object Refinery Limited and Contributors.
    006     *
    007     * Project Info:  http://www.jfree.org/jfreechart/index.html
    008     *
    009     * This library is free software; you can redistribute it and/or modify it
    010     * under the terms of the GNU Lesser General Public License as published by
    011     * the Free Software Foundation; either version 2.1 of the License, or
    012     * (at your option) any later version.
    013     *
    014     * This library is distributed in the hope that it will be useful, but
    015     * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
    016     * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
    017     * License for more details.
    018     *
    019     * You should have received a copy of the GNU Lesser General Public
    020     * License along with this library; if not, write to the Free Software
    021     * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
    022     * USA.
    023     *
    024     * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
    025     * in the United States and other countries.]
    026     *
    027     * ---------------
    028     * PieDataset.java
    029     * ---------------
    030     * (C) Copyright 2001-2008, by Object Refinery Limited.
    031     *
    032     * Original Author:  David Gilbert (for Object Refinery Limited);
    033     * Contributor(s):   Sam (oldman);
    034     *
    035     * Changes
    036     * -------
    037     * 17-Nov-2001 : Version 1 (DG);
    038     * 22-Jan-2002 : Removed the getCategoryCount() method, updated Javadoc
    039     *               comments (DG);
    040     * 18-Apr-2002 : getCategories() now returns List instead of Set (oldman);
    041     * 23-Oct-2002 : Reorganised the code: PieDataset now extends KeyedValues
    042     *               interface (DG);
    043     * 04-Mar-2003 : Now just replicates the KeyedValuesDataset interface (DG);
    044     *
    045     */
    046
    047    package org.jfree.data.general;
    048
    049    import org.jfree.data.KeyedValues;
    050
    051    /**
    052     * A general purpose dataset where values are associated with keys.  As the
    053     * name suggests, you can use this dataset to supply data for pie charts (refer
    054     * to the {@link org.jfree.chart.plot.PiePlot} class).
    055     */
    056    public interface PieDataset extends KeyedValues, Dataset {
    057
    058        // no new methods added.
    059
    060    }