    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
    053    package org.jfree.data.category;
    054
    055    import org.jfree.data.KeyedValues2D;
    056    import 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     */
    065    public interface CategoryDataset extends KeyedValues2D, Dataset {
    066
    067        // no additional methods required
    068
    069    }