Trait SqlTypeMapping 

pub trait SqlTypeMapping: Sized {
    const SQL_SERVER_TYPE: SqlServerType;
    const DEFAULT_MAX_LENGTH: Option<u32> = None;
    const DEFAULT_PRECISION: Option<u8> = None;
    const DEFAULT_SCALE: Option<u8> = None;

    // Required methods
    fn to_sql_value(self) -> SqlValue;
    fn from_sql_value(value: SqlValue) -> Result<Self, OrmError>;
}

Base Rust <-> SQL Server mapping contract used by row readers and persistence models.

Required Associated Constants

const SQL_SERVER_TYPE: SqlServerType

Provided Associated Constants

const DEFAULT_MAX_LENGTH: Option<u32> = None

const DEFAULT_PRECISION: Option<u8> = None

const DEFAULT_SCALE: Option<u8> = None

Required Methods

fn to_sql_value(self) -> SqlValue

fn from_sql_value(value: SqlValue) -> Result<Self, OrmError>

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl SqlTypeMapping for bool

const SQL_SERVER_TYPE: SqlServerType = SqlServerType::Bit

fn to_sql_value(self) -> SqlValue

fn from_sql_value(value: SqlValue) -> Result<bool, OrmError>

impl SqlTypeMapping for f64

const SQL_SERVER_TYPE: SqlServerType = SqlServerType::Float

fn to_sql_value(self) -> SqlValue

fn from_sql_value(value: SqlValue) -> Result<f64, OrmError>

impl SqlTypeMapping for i32

const SQL_SERVER_TYPE: SqlServerType = SqlServerType::Int

fn to_sql_value(self) -> SqlValue

fn from_sql_value(value: SqlValue) -> Result<i32, OrmError>

impl SqlTypeMapping for i64

const SQL_SERVER_TYPE: SqlServerType = SqlServerType::BigInt

fn to_sql_value(self) -> SqlValue

fn from_sql_value(value: SqlValue) -> Result<i64, OrmError>

impl SqlTypeMapping for String

const SQL_SERVER_TYPE: SqlServerType = SqlServerType::NVarChar

const DEFAULT_MAX_LENGTH: Option<u32>

fn to_sql_value(self) -> SqlValue

fn from_sql_value(value: SqlValue) -> Result<String, OrmError>

impl SqlTypeMapping for Vec<u8>

const SQL_SERVER_TYPE: SqlServerType = SqlServerType::VarBinary

fn to_sql_value(self) -> SqlValue

fn from_sql_value(value: SqlValue) -> Result<Vec<u8>, OrmError>

impl SqlTypeMapping for NaiveDate

const SQL_SERVER_TYPE: SqlServerType = SqlServerType::Date

fn to_sql_value(self) -> SqlValue

fn from_sql_value(value: SqlValue) -> Result<NaiveDate, OrmError>

impl SqlTypeMapping for NaiveDateTime

const SQL_SERVER_TYPE: SqlServerType = SqlServerType::DateTime2

fn to_sql_value(self) -> SqlValue

fn from_sql_value(value: SqlValue) -> Result<NaiveDateTime, OrmError>

impl SqlTypeMapping for Decimal

const SQL_SERVER_TYPE: SqlServerType = SqlServerType::Decimal

const DEFAULT_PRECISION: Option<u8>

const DEFAULT_SCALE: Option<u8>

fn to_sql_value(self) -> SqlValue

fn from_sql_value(value: SqlValue) -> Result<Decimal, OrmError>

impl SqlTypeMapping for Uuid

const SQL_SERVER_TYPE: SqlServerType = SqlServerType::UniqueIdentifier

fn to_sql_value(self) -> SqlValue

fn from_sql_value(value: SqlValue) -> Result<Uuid, OrmError>

impl<T> SqlTypeMapping for Option<T>

where T: SqlTypeMapping,

const SQL_SERVER_TYPE: SqlServerType = T::SQL_SERVER_TYPE

const DEFAULT_MAX_LENGTH: Option<u32> = T::DEFAULT_MAX_LENGTH

const DEFAULT_PRECISION: Option<u8> = T::DEFAULT_PRECISION

const DEFAULT_SCALE: Option<u8> = T::DEFAULT_SCALE

fn to_sql_value(self) -> SqlValue

fn from_sql_value(value: SqlValue) -> Result<Option<T>, OrmError>

Implementors