Bug 181706 Sorting Data by X values doesn't work without grouping
Using the 2.2M5 designer , I simply want to sort the data of the X Series in a Line Chart. I go into the Sort and Group pop up in the chart wizard and select ascending, but it doesn't affect the result. (style ordered same as the result set) If i define a dummy grouping (no interval) it is then working.
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/internal/datafeed/DataProcessor.java
*/
	private Object[] populateSeriesDataSet( Series seRuntime,
			IResultSetDataSet rsds, IResultSetDataSet userRsds )
			throws ChartException
	{
		IDataSetProcessor idsp = null;
		try
		{
			idsp = PluginSettings.instance( )
					.getDataSetProcessor( seRuntime.getClass( ) );
		}
		catch ( ChartException pex )
		{
			throw new ChartException( ChartEnginePlugin.ID,
					ChartException.DATA_BINDING,
					pex );
		}
		DataSet ds = null;
		ds = idsp.populate( rsds, null );
		DataSet[] usds = null;
		if ( userRsds != null )
		{
			
			UserDataSetProcessor tdsp = new UserDataSetProcessor( );
			usds = tdsp.populate( userRsds );
		}
		return new Object[]{
				ds, idsp, seRuntime, null, null, null, usds
		};
	}