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Java > Open Source Codes > org > jfree > data > general > PieDataset


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
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