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/*
 * JasperReports - Free Java Reporting Library.
 * Copyright (C) 2001 - 2011 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 .
 */
package net.sf.jasperreports.engine;

/**
 * Interface of an sub dataset instantiation.
 * 
 * @author Lucian Chirita ([email protected])
 * @version $Id: JRDatasetRun.java 5340 2012-05-04 10:41:48Z lucianc $
 * @see net.sf.jasperreports.engine.JRDataset
 * @see net.sf.jasperreports.engine.JRChartDataset#getDatasetRun()
 */
public interface JRDatasetRun extends JRCloneable, JRIdentifiable, JRPropertiesHolder
{
	/**
	 * Returns the sub dataset name.
	 * 
	 * @return the sub dataset name
	 */
	public String getDatasetName();
	
	
	/**
	 * Returns the parameters map expression.
	 * 
	 * The result of this expression is used as the parameters map when instantiating the dataset.
	 * 
	 * @return the parameters map expression
	 */
	public JRExpression getParametersMapExpression();
	
	
	/**
	 * Returns the list of parameter values.
	 * 
	 * @return the list of parameter values
	 */
	public JRDatasetParameter[] getParameters();

	
	/**
	 * Returns the DB connection expression.
	 * 

	 * The result of this expression is used as the DB connection when instantiating the dataset.
	 * 
	 * @return the DB connection expression
	 */
	public JRExpression getConnectionExpression();

	
	/**
	 * Returns the data source expression.
	 * 
	 * The result of this expression is used as the data source when instantiating the dataset.
	 * 
	 * @return the data source expression
	 */
	public JRExpression getDataSourceExpression();

}