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
* A helper function for removing expression collection from stack
		 */
		protected void popExpressions( )
		{
			assert !expressionStack.isEmpty( );
			this.expressions = (Collection) expressionStack.removeLast( );
		}
		protected void pushReportItemQuery( IBaseQueryDefinition query )
		{
			if( this.reportItemQueryStack == null )
			{
				this.reportItemQueryStack = new LinkedList( );
			}
			this.reportItemQueryStack.addLast( query );
		}
		
		protected void popReportItemQuery( )
		{
			assert this.reportItemQueryStack.isEmpty( ) == false;
			this.reportItemQueryStack.removeLast( );
		}
		
		/**
		 * A helper function for adding a query to query stack
		 */
		protected void pushQuery( IBaseTransform query )
		{
			this.queryStack.addLast( query );
		}
		/**