Bug 314612 Can't define slice size when create radar chart view for table
chart/org.eclipse.birt.chart.examples/src/org/eclipse/birt/chart/examples/radar/ui/series/RadarSeriesUIProvider.java
return ddc;
		}
		return new DefaultSelectDataComponent( );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @seeorg.eclipse.birt.chart.ui.swt.DefaultSeriesUIProvider#
	 * validateSeriesBindingType(org.eclipse.birt.chart.model.component.Series,
	 * org.eclipse.birt.chart.ui.swt.interfaces.IDataServiceProvider)
	 */
	public void validateSeriesBindingType( Series series,
			IDataServiceProvider idsp ) throws ChartException
	{
		Iterator<Query> iterEntries = series.getDataDefinition( ).iterator( );
		while ( iterEntries.hasNext( ) )
		{
			Query query = iterEntries.next( );
			DataType dataType = idsp.getDataType( query.getDefinition( ) );
			if ( dataType == DataType.TEXT_LITERAL
					|| dataType == DataType.DATE_TIME_LITERAL )
			{
				throw new ChartException( ChartUIExtensionPlugin.ID,
						ChartException.DATA_BINDING,
						query.getDefinition( ) );
			}
		}
	}
}