1 /* =========================================================== 2 * JFreeChart : a free chart library for the Java(tm) platform 3 * =========================================================== 4 * 5 * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors. 6 * 7 * Project Info: http://www.jfree.org/jfreechart/index.html 8 * 9 * This library is free software; you can redistribute it and/or modify it 10 * under the terms of the GNU Lesser General Public License as published by 11 * the Free Software Foundation; either version 2.1 of the License, or 12 * (at your option) any later version. 13 * 14 * This library is distributed in the hope that it will be useful, but 15 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 16 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 17 * License for more details. 18 * 19 * You should have received a copy of the GNU Lesser General Public 20 * License along with this library; if not, write to the Free Software 21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 22 * USA. 23 * 24 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 25 * in the United States and other countries.] 26 * 27 * --------------- 28 * PieDataset.java 29 * --------------- 30 * (C) Copyright 2001-2004, by Object Refinery Limited. 31 * 32 * Original Author: David Gilbert (for Object Refinery Limited); 33 * Contributor(s): Sam (oldman); 34 * 35 * $Id: PieDataset.java,v 1.2.2.1 2005/10/25 21:32:29 mungady Exp $ 36 * 37 * Changes 38 * ------- 39 * 17-Nov-2001 : Version 1 (DG); 40 * 22-Jan-2002 : Removed the getCategoryCount() method, updated Javadoc 41 * comments (DG); 42 * 18-Apr-2002 : getCategories() now returns List instead of Set (oldman); 43 * 23-Oct-2002 : Reorganised the code: PieDataset now extends KeyedValues 44 * interface (DG); 45 * 04-Mar-2003 : Now just replicates the KeyedValuesDataset interface (DG); 46 * 47 */ 48 49 package org.jfree.data.general; 50 51 import org.jfree.data.KeyedValues; 52 53 /** 54 * A general purpose dataset where values are associated with keys. As the 55 * name suggests, you can use this dataset to supply data for pie charts (refer 56 * to the {@link org.jfree.chart.plot.PiePlot} class). 57 */ 58 public interface PieDataset extends KeyedValues, Dataset { 59 60 // no new methods added. 61 62 } 63