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 License 

  20.  * along with this library; if not, write to the Free Software Foundation, 

  21.  * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.

  22.  *

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

  24.  * in the United States and other countries.]

  25.  *

  26.  * ---------------

  27.  * PieDataset.java

  28.  * ---------------

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

  30.  *

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

  32.  * Contributor(s):   Sam (oldman);

  33.  *

  34.  * $Id: PieDataset.java,v 1.2 2005/03/04 11:49:56 mungady Exp $

  35.  *

  36.  * Changes

  37.  * -------

  38.  * 17-Nov-2001 : Version 1 (DG);

  39.  * 22-Jan-2002 : Removed the getCategoryCount() method, updated Javadoc 

  40.  *               comments (DG);

  41.  * 18-Apr-2002 : getCategories() now returns List instead of Set (oldman);

  42.  * 23-Oct-2002 : Reorganised the code: PieDataset now extends KeyedValues 

  43.  *               interface (DG);

  44.  * 04-Mar-2003 : Now just replicates the KeyedValuesDataset interface (DG);

  45.  *

  46.  */

  47. 

  48. package org.jfree.data.general;

  49. 

  50. import org.jfree.data.KeyedValues;

  51. 

  52. /**

  53.  * A general purpose dataset where values are associated with keys.  As the 

  54.  * name suggests, you can use this dataset to supply data for pie charts (refer

  55.  * to the {@link org.jfree.chart.plot.PiePlot} class).

  56.  */

  57. public interface PieDataset extends KeyedValues, Dataset {

  58. 

  59.     // no new methods added.

  60. 

  61. }