    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 * CategoryDataset.java
    029 * --------------------
    030 * (C) Copyright 2000-2008, by Object Refinery Limited.
    031 *
    032 * Original Author:  David Gilbert (for Object Refinery Limited);
    033 * Contributor(s):   -;
    034 *
    035 * Changes (from 21-Aug-2001)
    036 * --------------------------
    037 * 21-Aug-2001 : Added standard header. Fixed DOS encoding problem (DG);
    038 * 18-Sep-2001 : Updated e-mail address in header (DG);
    039 * 15-Oct-2001 : Moved to new package (com.jrefinery.data.*) (DG);
    040 * 22-Oct-2001 : Renamed DataSource.java --> Dataset.java etc. (DG);
    041 * 17-Nov-2001 : Updated Javadoc comments (DG);
    042 * 04-Mar-2002 : Updated import statement (DG);
    043 * 23-Oct-2002 : Reorganised code (DG);
    044 * 10-Jan-2003 : Updated Javadocs (DG);
    045 * 21-Jan-2003 : Merged with TableDataset (which only existed in CVS) (DG);
    046 * 13-Mar-2003 : Added KeyedValues2DDataset interface (DG);
    047 * 23-Apr-2003 : Switched CategoryDataset and KeyedValues2DDataset so that
    048 *               CategoryDataset is the super interface (DG);
    049 * 18-Aug-2004 : Moved from org.jfree.data --> org.jfree.data.category (DG);
    050 *
    051 */
    052
    053package org.jfree.data.category;
    054
    055import org.jfree.data.KeyedValues2D;
    056import org.jfree.data.general.Dataset;
    057
    058/**
    059 * The interface for a dataset with one or more series, and values associated
    060 * with categories.
    061 * <P>
    062 * The categories are represented by <code>Comparable</code> instance, with the
    063 * category label being provided by the <code>toString</code> method.
    064 */
    065public interface CategoryDataset extends KeyedValues2D, Dataset {
    066
    067    // no additional methods required
    068
    069}