Bug 122254 Not Like operator is missing in the Filter tab of Data Set window
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/parser/EngineIRVisitor.java
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.getSuppressDuplicates( );
		col.setSuppressDuplicate( supress );
		currentElement = col;
	}
	public void visitRow( RowHandle handle )
	{