Bug 179913 Meter Chart color by categories with null values does not work correctly [0001]
Description: Meter Chart color by categories with null values does not work correctly. Build number: 2.2.0.v20070329-1055 Steps to reproduce: 1. New a Meter Chart with values as follows: Moto, null; Nokia, 58; null, 66; Benq, null. 2. In "Format Chart" tab, select "Series" node, choose "Color by Categories". 3. Preview. Expected result: 1. The needle which shows the second value should take the second color. 2. There should be four in the legend area and the third name is null. Actual result: 1. The needle which shows the second value should take the first color. 2. There should be three in the legend area. Error log: N/A
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/computation/LegendBuilder.java
{
		Map renders = rtc.getSeriesRenderers( );
		if ( renders != null
				&& !( (ChartWithoutAxes) cm ).getSeriesDefinitions( ).isEmpty( ) )
		{
			
			SeriesDefinition sdBase = (SeriesDefinition) ( (ChartWithoutAxes) cm ).getSeriesDefinitions( )
					.get( 0 );
			EList sdA = sdBase.getSeriesDefinitions( );
			SeriesDefinition[] sdOrtho = (SeriesDefinition[]) sdA.toArray( new SeriesDefinition[sdA.size( )] );
			DataSetIterator dsiOrtho = null;
			BaseRenderer br;
			boolean started = false;
			ENTRANCE: for ( int i = 0; i < sdOrtho.length; i++ )
			{
				List sdRuntimeSA = sdOrtho[i].getRunTimeSeries( );
				Series[] alRuntimeSeries = (Series[]) sdRuntimeSA.toArray( new Series[sdRuntimeSA.size( )] );
				for ( int j = 0; j < alRuntimeSeries.length; j++ )
				{
					try
					{
						dsiOrtho = new DataSetIterator( alRuntimeSeries[j].getDataSet( ) );
						LegendItemRenderingHints lirh = (LegendItemRenderingHints) renders.get( alRuntimeSeries[j] );
						if ( lirh == null )
						{
							legendData.filteredMinSliceEntry = null;
							break ENTRANCE;
						}
						br = lirh.getRenderer( );