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jfreechart example source code file (OHLCSeriesCollection.java)

This example jfreechart source code file (OHLCSeriesCollection.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, io, list, null, number, number, ohlcitem, ohlcitem, ohlcseries, ohlcseries, ohlcseriescollection, ohlcseriescollection, timeperiodanchor, util

The jfreechart OHLCSeriesCollection.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.]
 *
 * -------------------------
 * OHLCSeriesCollection.java
 * -------------------------
 * (C) Copyright 2006, 2007, by Object Refinery Limited.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes
 * -------
 * 04-Dec-2006 : Version 1 (DG);
 * 10-Jul-2008 : Added accessor methods for xPosition attribute (DG);
 */

package org.jfree.data.time.ohlc;

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

import org.jfree.data.general.DatasetChangeEvent;
import org.jfree.data.time.RegularTimePeriod;
import org.jfree.data.time.TimePeriodAnchor;
import org.jfree.data.xy.AbstractXYDataset;
import org.jfree.data.xy.OHLCDataset;
import org.jfree.data.xy.XYDataset;
import org.jfree.util.ObjectUtilities;

/**
 * A collection of {@link OHLCSeries} objects.
 *
 * @since 1.0.4
 *
 * @see OHLCSeries
 */
public class OHLCSeriesCollection extends AbstractXYDataset
                                implements OHLCDataset, Serializable {

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

    private TimePeriodAnchor xPosition = TimePeriodAnchor.MIDDLE;

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

    /**
     * Returns the position within each time period that is used for the X
     * value when the collection is used as an {@link XYDataset}.
     *
     * @return The anchor position (never <code>null).
     *
     * @since 1.0.11
     */
    public TimePeriodAnchor getXPosition() {
        return this.xPosition;
    }

    /**
     * Sets the position within each time period that is used for the X values
     * when the collection is used as an {@link XYDataset}, then sends a
     * {@link DatasetChangeEvent} is sent to all registered listeners.
     *
     * @param anchor  the anchor position (<code>null not permitted).
     *
     * @since 1.0.11
     */
    public void setXPosition(TimePeriodAnchor anchor) {
        if (anchor == null) {
            throw new IllegalArgumentException("Null 'anchor' argument.");
        }
        this.xPosition = anchor;
        notifyListeners(new DatasetChangeEvent(this, this));
    }

    /**
     * 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(OHLCSeries series) {
        if (series == null) {
            throw new IllegalArgumentException("Null 'series' argument.");
        }
        this.data.add(series);
        series.addChangeListener(this);
        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 OHLCSeries getSeries(int series) {
        if ((series < 0) || (series >= getSeriesCount())) {
            throw new IllegalArgumentException("Series index out of bounds");
        }
        return (OHLCSeries) 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 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 a time period.
     *
     * @param period  the time period (<code>null not permitted).
     *
     * @return The x-value.
     */
    protected synchronized long getX(RegularTimePeriod period) {
        long result = 0L;
        if (this.xPosition == TimePeriodAnchor.START) {
            result = period.getFirstMillisecond();
        }
        else if (this.xPosition == TimePeriodAnchor.MIDDLE) {
            result = period.getMiddleMillisecond();
        }
        else if (this.xPosition == TimePeriodAnchor.END) {
            result = period.getLastMillisecond();
        }
        return result;
    }

    /**
     * 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) {
        OHLCSeries s = (OHLCSeries) this.data.get(series);
        OHLCItem di = (OHLCItem) s.getDataItem(item);
        RegularTimePeriod period = di.getPeriod();
        return getX(period);
    }

    /**
     * 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 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 Number getY(int series, int item) {
        OHLCSeries s = (OHLCSeries) this.data.get(series);
        OHLCItem di = (OHLCItem) s.getDataItem(item);
        return new Double(di.getYValue());
    }

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

    /**
     * Returns the open-value for an item within a series.
     *
     * @param series  the series index.
     * @param item  the item index.
     *
     * @return The open-value.
     */
    public Number getOpen(int series, int item) {
        return new Double(getOpenValue(series, item));
    }

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

    /**
     * Returns the close-value for an item within a series.
     *
     * @param series  the series index.
     * @param item  the item index.
     *
     * @return The close-value.
     */
    public Number getClose(int series, int item) {
        return new Double(getCloseValue(series, item));
    }

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

    /**
     * Returns the high-value for an item within a series.
     *
     * @param series  the series index.
     * @param item  the item index.
     *
     * @return The high-value.
     */
    public Number getHigh(int series, int item) {
        return new Double(getHighValue(series, item));
    }

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

    /**
     * Returns the low-value for an item within a series.
     *
     * @param series  the series index.
     * @param item  the item index.
     *
     * @return The low-value.
     */
    public Number getLow(int series, int item) {
        return new Double(getLowValue(series, item));
    }

    /**
     * Returns <code>null always, because this dataset doesn't record
     * any volume data.
     *
     * @param series  the series index (ignored).
     * @param item  the item index (ignored).
     *
     * @return <code>null.
     */
    public Number getVolume(int series, int item) {
        return null;
    }

    /**
     * Returns <code>Double.NaN always, because this dataset doesn't
     * record any volume data.
     *
     * @param series  the series index (ignored).
     * @param item  the item index (ignored).
     *
     * @return <code>Double.NaN.
     */
    public double getVolumeValue(int series, int item) {
        return Double.NaN;
    }

    /**
     * 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 OHLCSeriesCollection)) {
            return false;
        }
        OHLCSeriesCollection that = (OHLCSeriesCollection) obj;
        if (!this.xPosition.equals(that.xPosition)) {
            return false;
        }
        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 {
        OHLCSeriesCollection clone
                = (OHLCSeriesCollection) super.clone();
        clone.data = (List) ObjectUtilities.deepClone(this.data);
        return clone;
    }

}

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