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/api/impl/GetParameterDefinitionTask.java
boolean fixedOrder = parameter.isFixedOrder( );
		boolean sortByLabel = "label".equalsIgnoreCase( parameter.getSortBy( ) );
		boolean sortDirectionValue = "asc".equalsIgnoreCase( parameter.getSortDirection( ) );
		if ( DesignChoiceConstants.PARAM_VALUE_TYPE_DYNAMIC
				.equals( selectionType ) )
		{
			CascadingParameterGroupHandle group = null;
			if ( isCascadingParameter( parameter ) )
			{
				group = getCascadingGroup( parameter );
			}
			if ( group != null
					&& DesignChoiceConstants.DATA_SET_MODE_SINGLE.equals( group
							.getDataSetMode( ) ) )
			{
				return getCascadingParameterList( parameter );
			}
			else if ( parameter.getDataSetName( ) != null )
			{
				return getChoicesFromParameterQuery( parameter );
			}
			else if ( group != null )
			{
				return getCascadingParameterList( parameter );
			}
		}
		else if ( DesignChoiceConstants.PARAM_VALUE_TYPE_STATIC
				.equals( selectionType ) )
		{
			Iterator iter = parameter.choiceIterator( );