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/adapter/ExpressionUtil.java
result.addNewExpression( org.eclipse.birt.core.data.ExpressionUtil.createJSRowExpression( bindingName ) );
	}
	/**
	 * Translate the old expression with "row" as indicator to new expression
	 * using "dataSetRow" as indicator.
	 * 
	 * @param oldExpression
	 * @return
	 */
	private String prepareTotalExpression( String oldExpression,
			List columnBindings, String groupName )
	{
		if ( oldExpression == null )
			return null;
		
		char[] chars = oldExpression.toCharArray( );
		
		
		if ( chars.length < 8 )
			return oldExpression;
		else
		{
			ParseIndicator indicator = new ParseIndicator( 0,
					0,
					false,
					false,
					true,
					true );
			for ( int i = 0; i < chars.length; i++ )
			{