defaultxyzdataset.java

java图形利器

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2006, by Object Refinery Limited and Contributors.
 *
 * Project Info:  http://www.jfree.org/jfreechart/index.html
 *
 * This library is free software; you can redistribute it and/or modify it 
 * under the terms of the GNU Lesser General Public License as published by 
 * the Free Software Foundation; either version 2.1 of the License, or 
 * (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful, but 
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, 
 * USA.  
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
 * in the United States and other countries.]
 *
 * ----------------------
 * DefaultXYZDataset.java
 * ----------------------
 * (C) Copyright 2006, by Object Refinery Limited.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * $Id: DefaultXYZDataset.java,v 1.1.2.4 2006/11/28 14:06:14 mungady Exp $
 *
 * Changes
 * -------
 * 12-Jul-2006 : Version 1 (DG);
 * 06-Oct-2006 : Fixed API doc warnings (DG);
 * 02-Nov-2006 : Fixed a problem with adding a new series with the same key
 *               as an existing series (see bug 1589392) (DG);
 *
 */

package org.jfree.data.xy;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import org.jfree.data.DomainOrder;
import org.jfree.data.general.DatasetChangeEvent;

/**
 * A default implementation of the {@link XYZDataset} interface that stores
 * data values in arrays of double primitives.
 * 
 * @since 1.0.2
 */
public class DefaultXYZDataset extends AbstractXYZDataset 
        implements XYZDataset {

    /**
     * Storage for the series keys.  This list must be kept in sync with the
     * seriesList.
     */
    private List seriesKeys;
    
    /** 
     * Storage for the series in the dataset.  We use a list because the
     * order of the series is significant.  This list must be kept in sync 
     * with the seriesKeys list.
     */ 
    private List seriesList;
    
    /**
     * Creates a new <code>DefaultXYZDataset</code> instance, initially 
     * containing no data.
     */
    public DefaultXYZDataset() {
        this.seriesKeys = new java.util.ArrayList();
        this.seriesList = new java.util.ArrayList();    
    }
    
    /**
     * Returns the number of series in the dataset.
     *
     * @return The series count.
     */
    public int getSeriesCount() {
        return this.seriesList.size();
    }

    /**
     * Returns the key for a series.  
     *
     * @param series  the series index (in the range <code>0</code> to 
     *     <code>getSeriesCount() - 1</code>).
     *
     * @return The key for the series.
     * 
     * @throws IllegalArgumentException if <code>series</code> is not in the 
     *     specified range.
     */
    public Comparable getSeriesKey(int series) {
        if ((series < 0) || (series >= getSeriesCount())) {
            throw new IllegalArgumentException("Series index out of bounds");
        }
        return (Comparable) this.seriesKeys.get(series);
    }

    /**
     * Returns the index of the series with the specified key, or -1 if there 
     * is no such series in the dataset.
     * 
     * @param seriesKey  the series key (<code>null</code> permitted).
     * 
     * @return The index, or -1.
     */
    public int indexOf(Comparable seriesKey) {
        return this.seriesKeys.indexOf(seriesKey);
    }

    /**
     * Returns the order of the domain (x-) values in the dataset.  In this
     * implementation, we cannot guarantee that the x-values are ordered, so 
     * this method returns <code>DomainOrder.NONE</code>.
     * 
     * @return <code>DomainOrder.NONE</code>.
     */
    public DomainOrder getDomainOrder() {
        return DomainOrder.NONE;
    }

    /**
     * Returns the number of items in the specified series.
     * 
     * @param series  the series index (in the range <code>0</code> to 
     *     <code>getSeriesCount() - 1</code>).
     * 
     * @return The item count.
     * 
     * @throws IllegalArgumentException if <code>series</code> is not in the 
     *     specified range.
     */
    public int getItemCount(int series) {
        if ((series < 0) || (series >= getSeriesCount())) {
            throw new IllegalArgumentException("Series index out of bounds");
        }
        double[][] seriesArray = (double[][]) this.seriesList.get(series);
        return seriesArray[0].length;
    }

    /**
     * Returns the x-value for an item within a series.
     * 
     * @param series  the series index (in the range <code>0</code> to 
     *     <code>getSeriesCount() - 1</code>).
     * @param item  the item index (in the range <code>0</code> to 
     *     <code>getItemCount(series)</code>).
     *     
     * @return The x-value.
     * 
     * @throws ArrayIndexOutOfBoundsException if <code>series</code> is not 
     *     within the specified range.
     * @throws ArrayIndexOutOfBoundsException if <code>item</code> is not 
     *     within the specified range.
     * 
     * @see #getX(int, int)
     */
    public double getXValue(int series, int item) {
        double[][] seriesData = (double[][]) this.seriesList.get(series);
        return seriesData[0][item];
    }

    /**
     * Returns the x-value for an item within a series.
     * 
     * @param series  the series index (in the range <code>0</code> to 
     *     <code>getSeriesCount() - 1</code>).
     * @param item  the item index (in the range <code>0</code> to 
     *     <code>getItemCount(series)</code>).
     *     
     * @return The x-value.
     * 
     * @throws ArrayIndexOutOfBoundsException if <code>series</code> is not 
     *     within the specified range.
     * @throws ArrayIndexOutOfBoundsException if <code>item</code> is not 
     *     within the specified range.
     * 
     * @see #getXValue(int, int)
     */
    public Number getX(int series, int item) {
        return new Double(getXValue(series, item));
    }

    /**
     * Returns the y-value for an item within a series.
     * 
     * @param series  the series index (in the range <code>0</code> to 
     *     <code>getSeriesCount() - 1</code>).
     * @param item  the item index (in the range <code>0</code> to 
     *     <code>getItemCount(series)</code>).
     *     
     * @return The y-value.
     * 
     * @throws ArrayIndexOutOfBoundsException if <code>series</code> is not 
     *     within the specified range.
     * @throws ArrayIndexOutOfBoundsException if <code>item</code> is not 
     *     within the specified range.
     * 
     * @see #getY(int, int)
     */
    public double getYValue(int series, int item) {