////  OpenForecast - open source, general-purpose forecasting package.//  Copyright (C) 2004  Steven R. Gould////  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA//package net.sourceforge.openforecast.output;import java.lang.reflect.Constructor;import java.lang.reflect.InvocationTargetException;import java.util.Date;import java.util.Iterator;import org.jfree.data.time.RegularTimePeriod;import org.jfree.data.time.TimeSeries;import org.jfree.data.time.TimeSeriesDataItem;import net.sourceforge.openforecast.DataPoint;import net.sourceforge.openforecast.DataSet;/** * Defines an Outputter that can be used to add the DataPoints from a DataSet * to a (JFreeChart) TimeSeries. This class provides for a quick and easy * "export" of forecast data points to a JFreeChart TimeSeries that can be * displayed in a JFreeChart. * @author Steven R. Gould * @since 0.4 */public class TimeSeriesOutputter implements Outputter{    /**     * Stores the result set from which this builder is to read its data.     */    private TimeSeries timeSeries;        /**     * The Constructor object representing the constructor to use for the     * TimePeriod components of the TimeSeriesDataItems within the output     * TimeSeries.     */    private Constructor timePeriodConstructor;        /**     * Constructs a new TimeSeriesOutputter that adds its output to the named     * TimeSeries.     * @param timeSeries the TimeSeries to add output to.     */    public TimeSeriesOutputter( TimeSeries timeSeries,                                Class timePeriodClass )        throws ClassNotFoundException, NoSuchMethodException    {        this.timeSeries = timeSeries;                Class[] args = new Class[1];        args[0] = Class.forName("java.util.Date");        timePeriodConstructor = timePeriodClass.getConstructor(args);    }        /**     * Adds a DataSet - a collection of DataPoints - to the current TimeSeries.     * The DataSet should contain all DataPoints to be output.     * @return the DataSet to be output to the current TimeSeries.     */    public void output( DataSet dataSet )        throws InstantiationException, IllegalAccessException,        InvocationTargetException, InstantiationException    {        String timeVariable = dataSet.getTimeVariable();                Iterator it = dataSet.iterator();        while ( it.hasNext() )            {                DataPoint dataPoint = (DataPoint)it.next();                output( dataPoint, timeVariable );            }    }        /**     * Outputs the given DataPoint to the current TimeSeries.     * @param dataPoint the DataPoint to output to the current TimeSeries.     */    private void output( DataPoint dataPoint, String timeVariable )        throws InstantiationException, IllegalAccessException,        InvocationTargetException, InstantiationException    {        long timeValue = (long)dataPoint.getIndependentValue(timeVariable);                Object[] args = new Object[1];        args[0] = new Date( timeValue );        RegularTimePeriod period            = (RegularTimePeriod)timePeriodConstructor.newInstance(args);                double value = dataPoint.getDependentValue();                timeSeries.add( new TimeSeriesDataItem(period,value) );    }}// Local variables:// tab-width: 4// End: