// Comparison is the most nested level protected override void Visit(ComparisonExpression exp) { var model = new ComparisonModel { ParamName = exp.Param.ParamName, Value = exp.Value.Value, Operator = exp.Operator }; var op = _comparisonOperators.Find(exp.Operator); if (op != null) { model.OperatorDisplayName = op.Name; if (!String.IsNullOrWhiteSpace(op.Alias)) { model.OperatorDisplayName = op.Alias; } } var param = _parameters.Find(x => x.Name.Equals(model.ParamName, StringComparison.OrdinalIgnoreCase)); if (param != null) { model.ValueType = param.ValueType.FullName; model.IsNumberValue = param.ValueType.IsNumericType(); } _stack.Push(model); }