    001/* ===========================================================
    002 * JFreeChart : a free chart library for the Java(tm) platform
    003 * ===========================================================
    004 *
    005 * (C) Copyright 2000-2011, 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 * [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
    025 * Other names may be trademarks of their respective owners.]
    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
    047package org.jfree.data.general;
    048
    049import 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 */
    056public interface PieDataset extends KeyedValues, Dataset {
    057
    058    // no new methods added.
    059
    060}