DatasetExpressionEvaluator.java

/*
 * 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.engine.fill;

import java.util.Map;

import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JRExpression;
import net.sf.jasperreports.engine.type.WhenResourceMissingTypeEnum;

/**
 * 
 * 
 * @author Lucian Chirita (lucianc@users.sourceforge.net)
 * @version $Id: DatasetExpressionEvaluator.java 3677 2010-04-02 11:39:11Z lucianc $
 */
public interface DatasetExpressionEvaluator
{

	void init(Map parametersMap, Map fieldsMap, Map variablesMap, 
			WhenResourceMissingTypeEnum resourceMissingType) throws JRException;
	
	Object evaluate(JRExpression expression) throws JRExpressionEvalException;
	
	Object evaluateOld(JRExpression expression) throws JRExpressionEvalException;
	
	Object evaluateEstimated(JRExpression expression) throws JRExpressionEvalException;
	
}