Values.OperatorSourcetype nonrec t = | PROJECTION| LESS_THAN| GREATER_THAN| CONTAINS| BETWEEN| LESS_THAN_OR_EQUAL_TO| GREATER_THAN_OR_EQUAL_TO| EQUAL_TO| NOT_EQUAL_TO| ADDITION| MULTIPLICATION| DIVISION| SUBTRACTION| MASK_ALL| MASK_FIRST_N| MASK_LAST_N| VALIDATE_NON_NULL| VALIDATE_NON_ZERO| VALIDATE_NON_NEGATIVE| VALIDATE_NUMERIC| NO_OP| Non_static_id of string