/*
* 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.crosstabs.fill;
import java.util.Map;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JRExpression;
import net.sf.jasperreports.engine.fill.JREvaluator;
import net.sf.jasperreports.engine.fill.JRFillExpressionEvaluator;
import net.sf.jasperreports.engine.type.WhenResourceMissingTypeEnum;
/**
* Expression evaluator used for crosstabs at fill time.
*
* @author Lucian Chirita (lucianc@users.sourceforge.net)
* @version $Id: JRCrosstabExpressionEvaluator.java 3507 2010-03-04 15:02:09Z teodord $
*/
public class JRCrosstabExpressionEvaluator implements JRFillExpressionEvaluator
{
private final JREvaluator evaluator;
public JRCrosstabExpressionEvaluator(JREvaluator evaluator)
{
this.evaluator = evaluator;
}
public Object evaluate(JRExpression expression, byte evaluationType) throws JRException
{
if (evaluationType != JRExpression.EVALUATION_DEFAULT)
{
throw new JRException("The crosstab evaluator doesn't support old or estimated expression evaluation.");
}
return evaluator.evaluate(expression);
}
public void init(Map parametersMap, Map variablesMap, WhenResourceMissingTypeEnum whenResourceMissingType) throws JRException
{
evaluator.init(parametersMap, null, variablesMap, whenResourceMissingType);
}
}