Bug 123576 Data can't be retrieved when exporting data
Description: Data can't be retrieved when exporting data Steps to reproduce: 1.Preview the attached file in Web Viewer 2.Exported the data in table Expected result: The data is exported as a CSV file Actual result: No data is retrieved
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/api/impl/DataExtractionTask.java
import org.eclipse.birt.data.engine.api.IResultIterator;
import org.eclipse.birt.data.engine.api.IScriptExpression;
import org.eclipse.birt.report.engine.api.ComponentID;
import org.eclipse.birt.report.engine.api.DataID;
import org.eclipse.birt.report.engine.api.DataSetID;
import org.eclipse.birt.report.engine.api.EngineException;
import org.eclipse.birt.report.engine.api.IDataExtractionTask;
import org.eclipse.birt.report.engine.api.IExtractionResults;
import org.eclipse.birt.report.engine.api.IReportRunnable;
import org.eclipse.birt.report.engine.api.InstanceID;
import org.eclipse.birt.report.engine.api.ReportEngine;
import org.eclipse.birt.report.engine.data.IDataEngine;
import org.eclipse.birt.report.engine.data.dte.AbstractDataEngine;
import org.eclipse.birt.report.engine.data.dte.DteDataEngine;
import org.eclipse.birt.report.engine.ir.Report;
import org.eclipse.birt.report.engine.ir.ReportItemDesign;
import org.eclipse.birt.report.engine.parser.ReportParser;
public class DataExtractionTask extends EngineTask
		implements
			IDataExtractionTask
{
	protected ReportDocumentReader reportDocReader;
	
	protected ComponentID componentId;
	
	protected InstanceID instanceId;
	
	protected String[] selectedColumns;
	
	protected Report report;