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
boolean isStack = true;
				boolean hasOptionalGrouping = false;
				exitStackCheck: for ( int i = 0; i < seda.length; i++ )
				{					
					if ( !hasOptionalGrouping && seda[i].getQuery( ) != null )
					{
						
						String query = seda[i].getQuery( ).getDefinition( );
						if ( query != null && query.trim( ).length( ) != 0 )
						{
							hasOptionalGrouping = true;
						}
					}
					if ( isStack )
					{
						
						
						for ( Iterator iter = seda[i].getSeries( ).iterator( ); iter.hasNext( ); )
						{
							Series series = (Series) iter.next( );
							if ( !series.isStacked( ) )
							{
								
								isStack = false;
								if ( hasOptionalGrouping )
								{
									break exitStackCheck;
								}
								break;
							}