001/* ===========================================================
002 * JFreeChart : a free chart library for the Java(tm) platform
003 * ===========================================================
004 *
005 * (C) Copyright 2000-present, by David Gilbert 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-present, by David Gilbert.
031 *
032 * Original Author:  David Gilbert;
033 * Contributor(s):   Sam (oldman);
034 *                   Tracy Hiltbrand (generics for bug fix to PiePlot);
035 *
036 */
037
038package org.jfree.data.general;
039
040import org.jfree.data.KeyedValues;
041
042/**
043 * A general purpose dataset where values are associated with keys.  As the
044 * name suggests, you can use this dataset to supply data for pie charts (refer
045 * to the {@link org.jfree.chart.plot.PiePlot} class).
046 * 
047 * @param <K> Key type for KeyedValues
048 */
049public interface PieDataset<K extends Comparable<K>> extends KeyedValues<K>,
050                                                             Dataset {
051    // no new methods added.
052}