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
*/
		protected IInputParameterBinding createParamBinding(
				ParamBindingHandle handle )
		{
			if ( handle.getExpression( ) == null )
				return null; 
			ScriptExpression expr = new ScriptExpression( handle
					.getExpression( ) );
			
			return new InputParameterBinding( handle.getParamName( ), expr );
		}
		/**
		 * create input parameter bindings
		 * 
		 * @param iter
		 *            parameter bindings iterator
		 * @return a list of input parameter bindings
		 */
		protected ArrayList createParamBindings( Iterator iter )
		{
			ArrayList list = new ArrayList( );
			if ( iter != null )
			{
				while ( iter.hasNext( ) )
				{
					ParamBindingHandle modelParamBinding = (ParamBindingHandle) iter
							.next( );
					IInputParameterBinding binding = createParamBinding( modelParamBinding );
					if ( binding != null )
					{