    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 * TableXYDataset.java
    029 * -------------------
    030 * (C) Copyright 2000-2008, by Richard Atkinson and Contributors.
    031 *
    032 * Original Author:  Richard Atkinson;
    033 * Contributor(s):   David Gilbert (for Object Refinery Limited);
    034 *
    035 * Changes
    036 * -------
    037 * 22-Sep-2003 : Changed to be an interface.  Previous functionality moved to
    038 *               DefaultTableXYDataset;
    039 * 16-Feb-2004 : Updated Javadocs (DG);
    040 *
    041 */
    042
    043package org.jfree.data.xy;
    044
    045
    046/**
    047 * A dataset containing one or more data series containing (x, y) data items,
    048 * where all series in the dataset share the same set of x-values.  This is a
    049 * restricted form of the {@link XYDataset} interface (which allows independent
    050 * x-values between series). This is used primarily by the
    051 * {@link org.jfree.chart.renderer.xy.StackedXYAreaRenderer}.
    052 */
    053public interface TableXYDataset extends XYDataset {
    054
    055    /**
    056     * Returns the number of items every series.
    057     *
    058     * @return The item count.
    059     */
    060    public int getItemCount();
    061
    062}