Bug 102511 Enhance Highlighting to support Banding
Using the highlight feature to create a banded report results in a messy report. To recreate, create a simple tabular report. In the designer, select the detail row, go to the Highlights tab on the Property Editor view. Add a new highlight, set its condition to be "row[0] % 2" "Equals" "0". Set the formatting for the highlight to have a gray background color. When the report is previewed, alternating rows have a background color for each cell. The issue is that the backgrounds for the cells are not contiguous, there are spaces between each cell's background, and if a cell has a null value there is no background color. In this situation the highlight should apply to the row, instead it is being applied to each cell. If I manually set the background of a detail row to be gray I get the effect I want.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/data/dte/ReportQueryBuilder.java
/**
		 * @return the parent query for the current report item
		 */
		protected BaseQueryDefinition getParentQuery( )
		{
			if ( queryStack.isEmpty( ) )
				return null;
			for ( int i = queryStack.size( ) - 1; i >= 0; i-- )
			{
				if ( queryStack.get( i ) instanceof BaseQueryDefinition )
					return (BaseQueryDefinition) queryStack.get( i );
			}
			return null;
		}
		/**
		 * @return the expression collection
		 */
		protected Collection getExpressions( )
		{
			return expressions;
		}
		/**
		 * @return a unique query name, based on a simple integer counter
		 */
		protected String createUniqueQueryName( )
		{
			queryCount++;
			return String.valueOf( queryCount );
		}
		/**