Bug 182680 Use feature of new Aggregation framework of Data Engine.
DataEngine will implement new aggregation framework in 2.2.0RC0. After the implementation is finished Engine should go ahead to use new column bindings in definition of map/highlight.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/data/dte/ReportQueryBuilder.java
{
					addColumnBinding( query, bindings[i] );
				}
			}
		}
		private void addColumnBinding( IBaseQueryDefinition transfer,
				IColumnBinding binding )
		{
			assert transfer != null;
			transfer.getResultSetExpressions( )
					.put( binding.getResultSetColumnName( ),
							binding.getBoundExpression( ));
		}
		/**
		 * finish the current visit. transform the expressions of the query.
		 * @param item
		 * @param query
		 */
		private void transformExpressions( ReportItemDesign item,
				IBaseQueryDefinition query )
		{
			
			
			if ( query != null )
			{
				transformExpressions( item, query, null );
			}
		}
	}
}