Bug 187444 [Automation][Regression] chart using inherited dataset did not work properly
steps to reproduce: - use the attached report design - preview in html, pdf and viewer expected behavior: - attached report should be previewed properly actual behavior: - return empty report
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/internal/document/v4/ExtendedItemExecutor.java
{
	public ExtendedItemExecutor( ExecutorManager manager )
	{
		super( manager, ExecutorManager.EXTENDEDITEM );
	}
	public void close( )
	{
		closeQuery( );
		super.close( );
	}
	protected IReportItemExecutor prepareChildExecutor( ) throws Exception
	{
		
		if ( prepareFirstChild )
		{
			if ( fragment == null && nextOffset == -1 )
			{