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
if ( modelOpr.equals( DesignChoiceConstants.FILTER_OPERATOR_LIKE ) )
			return IConditionalExpression.OP_LIKE;
		if ( modelOpr.equals( DesignChoiceConstants.FILTER_OPERATOR_TOP_N ) )
			return IConditionalExpression.OP_TOP_N;
		if ( modelOpr.equals( DesignChoiceConstants.FILTER_OPERATOR_BOTTOM_N ) )
			return IConditionalExpression.OP_BOTTOM_N;
		if ( modelOpr
				.equals( DesignChoiceConstants.FILTER_OPERATOR_TOP_PERCENT ) )
			return IConditionalExpression.OP_TOP_PERCENT;
		if ( modelOpr
				.equals( DesignChoiceConstants.FILTER_OPERATOR_BOTTOM_PERCENT ) )
			return IConditionalExpression.OP_BOTTOM_PERCENT;
		if ( modelOpr.equals( DesignChoiceConstants.FILTER_OPERATOR_NOT_LIKE ) )
			return IConditionalExpression.OP_NOT_LIKE;
		if ( modelOpr.equals( DesignChoiceConstants.FILTER_OPERATOR_NOT_MATCH ) )
			return IConditionalExpression.OP_NOT_MATCH;
		return IConditionalExpression.OP_NONE;
	}
	public IConditionalExpression createConditionalExpression(
			String testExpression, String operator, String value1, String value2 )
	{
		ConditionalExpression expression = new ConditionalExpression(
				testExpression, toDteFilterOperator( operator ), value1, value2 );
		return ExpressionUtil.transformConditionalExpression( expression );
	}
}
/**
 * 
 */
class TotalExprBinding implements ITotalExprBindings