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jfreechart example source code file (VectorSeriesCollection.java)

This example jfreechart source code file (VectorSeriesCollection.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - jfreechart tags/keywords

clonenotsupportedexception, double, illegalargumentexception, illegalargumentexception, io, list, null, number, serializable, util, vectordataitem, vectordataitem, vectorseries, vectorseries, vectorseriescollection, vectorseriescollection

The jfreechart VectorSeriesCollection.java source code

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2008, 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.]
 *
 * ---------------------------
 * VectorSeriesCollection.java
 * ---------------------------
 * (C) Copyright 2007, 2008, by Object Refinery Limited.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes
 * -------
 * 30-Jan-2007 : Version 1 (DG);
 * 24-May-2007 : Added indexOf(), removeSeries() and removeAllSeries()
 *               methods (DG);
 * 25-May-2007 : Moved from experimental to the main source tree (DG);
 * 22-Apr-2008 : Implemented PublicCloneable (DG);
 *
 */

package org.jfree.data.xy;

import java.io.Serializable;
import java.util.List;

import org.jfree.data.general.DatasetChangeEvent;
import org.jfree.util.ObjectUtilities;
import org.jfree.util.PublicCloneable;

/**
 * A collection of {@link VectorSeries} objects.
 *
 * @since 1.0.6
 */
public class VectorSeriesCollection extends AbstractXYDataset
        implements VectorXYDataset, PublicCloneable, Serializable {

    /** Storage for the data series. */
    private List data;

    /**
     * Creates a new instance of <code>VectorSeriesCollection.
     */
    public VectorSeriesCollection() {
        this.data = new java.util.ArrayList();
    }

    /**
     * Adds a series to the collection and sends a {@link DatasetChangeEvent}
     * to all registered listeners.
     *
     * @param series  the series (<code>null not permitted).
     */
    public void addSeries(VectorSeries series) {
        if (series == null) {
            throw new IllegalArgumentException("Null 'series' argument.");
        }
        this.data.add(series);
        series.addChangeListener(this);
        fireDatasetChanged();
    }

    /**
     * Removes the specified series from the collection and sends a
     * {@link DatasetChangeEvent} to all registered listeners.
     *
     * @param series  the series (<code>null not permitted).
     *
     * @return A boolean indicating whether the series has actually been
     *         removed.
     */
    public boolean removeSeries(VectorSeries series) {
        if (series == null) {
            throw new IllegalArgumentException("Null 'series' argument.");
        }
        boolean removed = this.data.remove(series);
        if (removed) {
            series.removeChangeListener(this);
            fireDatasetChanged();
        }
        return removed;
    }

    /**
     * Removes all the series from the collection and sends a
     * {@link DatasetChangeEvent} to all registered listeners.
     */
    public void removeAllSeries() {

        // deregister the collection as a change listener to each series in the
        // collection
        for (int i = 0; i < this.data.size(); i++) {
            VectorSeries series = (VectorSeries) this.data.get(i);
            series.removeChangeListener(this);
        }

        // remove all the series from the collection and notify listeners.
        this.data.clear();
        fireDatasetChanged();

    }

    /**
     * Returns the number of series in the collection.
     *
     * @return The series count.
     */
    public int getSeriesCount() {
        return this.data.size();
    }

    /**
     * Returns a series from the collection.
     *
     * @param series  the series index (zero-based).
     *
     * @return The series.
     *
     * @throws IllegalArgumentException if <code>series is not in the
     *     range <code>0 to getSeriesCount() - 1.
     */
    public VectorSeries getSeries(int series) {
        if ((series < 0) || (series >= getSeriesCount())) {
            throw new IllegalArgumentException("Series index out of bounds");
        }
        return (VectorSeries) this.data.get(series);
    }

    /**
     * Returns the key for a series.
     *
     * @param series  the series index (in the range <code>0 to
     *     <code>getSeriesCount() - 1).
     *
     * @return The key for a series.
     *
     * @throws IllegalArgumentException if <code>series is not in the
     *     specified range.
     */
    public Comparable getSeriesKey(int series) {
        // defer argument checking
        return getSeries(series).getKey();
    }

    /**
     * Returns the index of the specified series, or -1 if that series is not
     * present in the dataset.
     *
     * @param series  the series (<code>null not permitted).
     *
     * @return The series index.
     */
    public int indexOf(VectorSeries series) {
        if (series == null) {
            throw new IllegalArgumentException("Null 'series' argument.");
        }
        return this.data.indexOf(series);
    }

    /**
     * Returns the number of items in the specified series.
     *
     * @param series  the series (zero-based index).
     *
     * @return The item count.
     *
     * @throws IllegalArgumentException if <code>series is not in the
     *     range <code>0 to getSeriesCount() - 1.
     */
    public int getItemCount(int series) {
        // defer argument checking
        return getSeries(series).getItemCount();
    }

    /**
     * Returns the x-value for an item within a series.
     *
     * @param series  the series index.
     * @param item  the item index.
     *
     * @return The x-value.
     */
    public double getXValue(int series, int item) {
        VectorSeries s = (VectorSeries) this.data.get(series);
        VectorDataItem di = (VectorDataItem) s.getDataItem(item);
        return di.getXValue();
    }

    /**
     * Returns the x-value for an item within a series.  Note that this method
     * creates a new {@link Double} instance every time it is called---use
     * {@link #getXValue(int, int)} instead, if possible.
     *
     * @param series  the series index.
     * @param item  the item index.
     *
     * @return The x-value.
     */
    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.
     * @param item  the item index.
     *
     * @return The y-value.
     */
    public double getYValue(int series, int item) {
        VectorSeries s = (VectorSeries) this.data.get(series);
        VectorDataItem di = (VectorDataItem) s.getDataItem(item);
        return di.getYValue();
    }

    /**
     * Returns the y-value for an item within a series.  Note that this method
     * creates a new {@link Double} instance every time it is called---use
     * {@link #getYValue(int, int)} instead, if possible.
     *
     * @param series  the series index.
     * @param item  the item index.
     *
     * @return The y-value.
     */
    public Number getY(int series, int item) {
        return new Double(getYValue(series, item));
    }

    /**
     * Returns the vector for an item in a series.
     *
     * @param series  the series index.
     * @param item  the item index.
     *
     * @return The vector (possibly <code>null).
     */
    public Vector getVector(int series, int item) {
        VectorSeries s = (VectorSeries) this.data.get(series);
        VectorDataItem di = (VectorDataItem) s.getDataItem(item);
        return di.getVector();
    }

    /**
     * Returns the x-component of the vector for an item in a series.
     *
     * @param series  the series index.
     * @param item  the item index.
     *
     * @return The x-component of the vector.
     */
    public double getVectorXValue(int series, int item) {
        VectorSeries s = (VectorSeries) this.data.get(series);
        VectorDataItem di = (VectorDataItem) s.getDataItem(item);
        return di.getVectorX();
    }

    /**
     * Returns the y-component of the vector for an item in a series.
     *
     * @param series  the series index.
     * @param item  the item index.
     *
     * @return The y-component of the vector.
     */
    public double getVectorYValue(int series, int item) {
        VectorSeries s = (VectorSeries) this.data.get(series);
        VectorDataItem di = (VectorDataItem) s.getDataItem(item);
        return di.getVectorY();
    }

    /**
     * Tests this instance for equality with an arbitrary object.
     *
     * @param obj  the object (<code>null permitted).
     *
     * @return A boolean.
     */
    public boolean equals(Object obj) {
        if (obj == this) {
            return true;
        }
        if (!(obj instanceof VectorSeriesCollection)) {
            return false;
        }
        VectorSeriesCollection that = (VectorSeriesCollection) obj;
        return ObjectUtilities.equal(this.data, that.data);
    }

    /**
     * Returns a clone of this instance.
     *
     * @return A clone.
     *
     * @throws CloneNotSupportedException if there is a problem.
     */
    public Object clone() throws CloneNotSupportedException {
        VectorSeriesCollection clone
                = (VectorSeriesCollection) super.clone();
        clone.data = (List) ObjectUtilities.deepClone(this.data);
        return clone;
    }

}

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