/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2009 Jaspersoft Corporation. All rights reserved.
* http://www.jaspersoft.com
*
* Unless you have purchased a commercial license agreement from Jaspersoft,
* the following license terms apply:
*
* This program is part of JasperReports.
*
* JasperReports 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 3 of the License, or
* (at your option) any later version.
*
* JasperReports 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 JasperReports. If not, see <http://www.gnu.org/licenses/>.
*/
package net.sf.jasperreports.charts.fill;
import net.sf.jasperreports.charts.JRValueDataset;
import net.sf.jasperreports.engine.JRChartDataset;
import net.sf.jasperreports.engine.JRExpression;
import net.sf.jasperreports.engine.JRExpressionCollector;
import net.sf.jasperreports.engine.design.JRVerifier;
import net.sf.jasperreports.engine.fill.JRCalculator;
import net.sf.jasperreports.engine.fill.JRExpressionEvalException;
import net.sf.jasperreports.engine.fill.JRFillChartDataset;
import net.sf.jasperreports.engine.fill.JRFillObjectFactory;
import org.jfree.data.general.Dataset;
import org.jfree.data.general.DefaultValueDataset;
/**
* @author Barry Klawans (bklawans@users.sourceforge.net)
* @version $Id: JRFillValueDataset.java 3938 2010-08-19 14:59:36Z teodord $
*/
public class JRFillValueDataset extends JRFillChartDataset implements JRValueDataset
{
private Number value;
/**
*
*/
private DefaultValueDataset valueDataset = new DefaultValueDataset();
/**
*
*/
public JRFillValueDataset(JRValueDataset valueDataset,
JRFillObjectFactory factory)
{
super(valueDataset, factory);
}
/**
*
*/
public JRExpression getValueExpression()
{
return ((JRValueDataset)parent).getValueExpression();
}
/**
*
*/
protected void customInitialize()
{
valueDataset = new DefaultValueDataset();
}
/**
*
*/
protected void customEvaluate(JRCalculator calculator) throws JRExpressionEvalException
{
value = (Number)calculator.evaluate(getValueExpression());
}
/**
*
*/
protected void customIncrement()
{
valueDataset.setValue(value);
}
/**
*
*/
public Dataset getCustomDataset()
{
return valueDataset;
}
/**
*
*/
public Object getLabelGenerator()
{
return null;
}
/**
*
*/
public byte getDatasetType() {
return JRChartDataset.VALUE_DATASET;
}
/**
*
*/
public void collectExpressions(JRExpressionCollector collector)
{
collector.collect(this);
}
public void validate(JRVerifier verifier)
{
verifier.verify(this);
}
}