/*!
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program 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.
*
* Copyright (c) 2002-2013 Pentaho Corporation.. All rights reserved.
*/
package org.pentaho.plugin.jfreereport.reportcharts.collectors;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import org.jfree.data.general.Dataset;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;
import org.pentaho.reporting.engine.classic.core.event.ReportEvent;
import org.pentaho.reporting.engine.classic.core.function.Expression;
import org.pentaho.reporting.engine.classic.core.states.ReportStateKey;
import org.pentaho.reporting.engine.classic.core.util.Sequence;
public class XYSeriesCollector extends AbstractCollectorFunction
{
private ArrayList<String> xValueColumns;
private ArrayList<String> yValueColumns;
private HashMap<ReportStateKey,Sequence<HashMap<Comparable,XYSeries>>> seriesSequenceMap;
public XYSeriesCollector()
{
xValueColumns = new ArrayList<String>();
yValueColumns = new ArrayList<String>();
this.seriesSequenceMap = new HashMap<ReportStateKey, Sequence<HashMap<Comparable, XYSeries>>>();
}
protected HashMap<Comparable,XYSeries> getSeriesMap ()
{
final ReportStateKey key = getStateKey();
Sequence<HashMap<Comparable,XYSeries>> sequence = seriesSequenceMap.get(key);
if (sequence == null)
{
sequence = new Sequence<HashMap<Comparable,XYSeries>>();
seriesSequenceMap.put(key, sequence);
}
HashMap<Comparable, XYSeries> map = sequence.get(getLastGroupSequenceNumber());
if (map == null)
{
map = new HashMap<Comparable, XYSeries>();
sequence.set(getLastGroupSequenceNumber(), map);
}
return map;
}
protected Dataset createNewDataset()
{
return new XYSeriesCollection();
}
public void setXValueColumn(final int index, final String field)
{
if (xValueColumns.size() == index)
{
xValueColumns.add(field);
}
else
{
xValueColumns.set(index, field);
}
}
public String getXValueColumn(final int index)
{
return xValueColumns.get(index);
}
public int getXValueColumnCount()
{
return xValueColumns.size();
}
public String[] getXValueColumn()
{
return xValueColumns.toArray(new String[xValueColumns.size()]);
}
public void setXValueColumn(final String[] fields)
{
this.xValueColumns.clear();
this.xValueColumns.addAll(Arrays.asList(fields));
}
public void setYValueColumn(final int index, final String field)
{
if (yValueColumns.size() == index)
{
yValueColumns.add(field);
}
else
{
yValueColumns.set(index, field);
}
}
public String getYValueColumn(final int index)
{
return yValueColumns.get(index);
}
public int getYValueColumnCount()
{
return yValueColumns.size();
}
public String[] getYValueColumn()
{
return yValueColumns.toArray(new String[yValueColumns.size()]);
}
public void setYValueColumn(final String[] fields)
{
this.yValueColumns.clear();
this.yValueColumns.addAll(Arrays.asList(fields));
}
/**
* Return a completly separated copy of this function. The copy does no longer share any changeable objects with the
* original function.
*
* @return a copy of this function.
*/
public Expression getInstance()
{
final XYSeriesCollector expression = (XYSeriesCollector) super.getInstance();
expression.xValueColumns = (ArrayList<String>) xValueColumns.clone();
expression.yValueColumns = (ArrayList<String>) yValueColumns.clone();
expression.seriesSequenceMap = new HashMap<ReportStateKey, Sequence<HashMap<Comparable, XYSeries>>>();
return expression;
}
protected void buildDataset()
{
final XYSeriesCollection xySeriesDataset = (XYSeriesCollection) getDataSet();
final List seriesList = xySeriesDataset.getSeries();
final HashMap<Comparable, XYSeries> seriesMap = getSeriesMap();
if (seriesMap.isEmpty())
{
for (int i = 0; i < seriesList.size(); i++)
{
final XYSeries series = (XYSeries) seriesList.get(i);
seriesMap.put(series.getKey(), series);
}
}
final int maxIndex = Math.min (this.xValueColumns.size(), this.yValueColumns.size());
for (int i = 0; i < maxIndex; i++)
{
final Comparable seriesName = querySeriesValue(i);
final Object xValueObject = getDataRow().get(xValueColumns.get(i));
final Object yValueObject = getDataRow().get(yValueColumns.get(i));
if (xValueObject instanceof Number == false)
{
continue;
}
final Number xValue = (Number) xValueObject;
final Number yValue = (yValueObject instanceof Number) ? (Number) yValueObject : null;
XYSeries series = seriesMap.get(seriesName);
if (series == null)
{
series = new XYSeries(seriesName);
xySeriesDataset.addSeries(series);
seriesMap.put(seriesName, series);
}
series.add(xValue, yValue, false);
}
}
/**
* Receives notification that report generation has completed, the report footer was printed, no more output is done.
* This is a helper event to shut down the output service.
*
* @param event The event.
*/
public void reportDone(final ReportEvent event)
{
seriesSequenceMap.clear();
}
}