Bug 214082 [Automation][Regression] Exception is thrown out when preview the attached report design in Web Viewer [00]
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/internal/document/v4/TableGroupExecutor.java
package org.eclipse.birt.report.engine.internal.document.v4;
public class TableGroupExecutor extends GroupExecutor
{
	protected TableGroupExecutor( ExecutorManager manager )
	{
		super( manager, ExecutorManager.TABLEGROUPITEM );
	}
	protected ReportItemExecutor doCreateExecutor( long offset )
			throws Exception
	{
		ReportItemExecutor executor = super.doCreateExecutor( offset );
		if ( executor instanceof TableBandExecutor )
		{
			TableBandExecutor bandExecutor = (TableBandExecutor) executor;
			bandExecutor
					.setTableExecutor( (TableItemExecutor) getListingExecutor( ) );
		}
		return executor;
	}
}