Bug 214065 [Regression]Group TOC are created automatically when preview in Web viewer and PDF
Description: [Regression]Group TOC are created automatically when preview in Web viewer and PDF Build number: 2.3.0.v200701012-1021 Steps to reproduce: 1, New a table binding with dataset 2, New a group on table and do not specify the group toc 3, Preview in Web viewer and PDF Expected result: No default TOC of group Actual result: Some empty group toc created automatically in preview Error log:
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/executor/ReportItemExecutor.java
if ( buffer.length( ) != 0 )
			{
				buffer.setLength( buffer.length( ) - 1 );
				column.setVisibleFormat( buffer.toString( ) );
			}
		}
	}
	protected DataID getDataID( )
	{
		if ( parent != null )
		{
			
			IQueryResultSet prset = parent.rset;
			if ( prset != null )
			{
				DataSetID dataSetID = prset.getID( );
				long position = prset.getRowIndex( );
				if ( dataSetID == null )
				{
					return null;
				}
				return new DataID( dataSetID, position );
			}
			
			
			IBaseResultSet[] rsets = parent.getQueryResults( );
			if ( ( rsets != null ) && ( rsets.length > 0 ) &&
					( rsets[0] != null ) )
			{
				if ( rsets[0] instanceof IQueryResultSet )