Prado\Data\TDbConnection::getNullConversion PHP Method

    public function getNullConversion()
    {
        switch ($this->getAttribute(PDO::ATTR_ORACLE_NULLS)) {
            case PDO::NULL_NATURAL:
                return TDbNullConversionMode::Preserved;
            case PDO::NULL_EMPTY_STRING:
                return TDbNullConversionMode::EmptyStringToNull;
            case PDO::NULL_TO_STRING:
                return TDbNullConversionMode::NullToEmptyString;
        }
    }