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/parser/EngineIRVisitor.java
if ( column.getSuppressDuplicate( ) )
				{
					for ( int k = 0; k < cell.getContentCount( ); k++ )
					{
						ReportItemDesign item = cell.getContent( k );
						if ( item instanceof DataItemDesign ) 
						{
							DataItemDesign dataItem = ( DataItemDesign )item;
							dataItem.setSuppressDuplicate( true );
						}
					}
				}
			}
		}
		currentElement = table;
	}
	public void visitColumn( ColumnHandle handle )
	{
		
		ColumnDesign col = new ColumnDesign( );
		setupStyledElement( col, handle );
		
		DimensionType width = createDimension( handle.getWidth( ) );
		col.setWidth( width );
		
		boolean supress = handle.suppressDuplicates( );
		col.setSuppressDuplicate( supress );
		currentElement = col;
	}
	public void visitRow( RowHandle handle )