Enum ScalarAdapter

pub(crate) enum ScalarAdapter {
    Builtin(ScalarImpl),
    Uuid(Uuid),
    Numeric(PgNumeric),
    Enum(EnumString),
    NumericList(Vec<Option<PgNumeric>>),
    EnumList(Vec<Option<EnumString>>),
    List(Vec<Option<ScalarAdapter>>),
}

Adapter for ScalarImpl to Postgres data type, which can be used to encode/decode to/from Postgres value.

Variants

Builtin(ScalarImpl)

Uuid(Uuid)

Numeric(PgNumeric)

Enum(EnumString)

NumericList(Vec<Option<PgNumeric>>)

EnumList(Vec<Option<EnumString>>)

List(Vec<Option<ScalarAdapter>>)

Implementations

impl ScalarAdapter

pub fn name(&self) -> &'static str

pub(crate) fn from_scalar( scalar: ScalarRefImpl<'_>, ty: &Type, ) -> ConnectorResult<ScalarAdapter>

convert ScalarRefImpl to ScalarAdapter so that we can correctly encode to postgres value

pub fn into_scalar(self, ty: &DataType) -> Option<ScalarImpl>

Trait Implementations

impl Debug for ScalarAdapter

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'a> FromSql<'a> for ScalarAdapter

convert from Postgres uuid, numeric and enum to ScalarAdapter

fn from_sql( ty: &Type, raw: &'a [u8], ) -> Result<Self, Box<dyn Error + Sync + Send>>

Creates a new value of this type from a buffer of data of the specified Postgres Type in its binary format.

fn accepts(ty: &Type) -> bool

Determines if a value of this type can be created from the specified Postgres Type.

fn from_sql_null(ty: &Type) -> Result<Self, Box<dyn Error + Sync + Send>>

Creates a new value of this type from a NULL SQL value.

fn from_sql_nullable( ty: &Type, raw: Option<&'a [u8]>, ) -> Result<Self, Box<dyn Error + Sync + Send>>

A convenience function that delegates to from_sql and from_sql_null depending on the value of raw.

impl ToSql for ScalarAdapter

fn to_sql_checked( &self, ty: &Type, out: &mut BytesMut, ) -> Result<IsNull, Box<dyn Error + Sync + Send>>

An adaptor method used internally by Rust-Postgres.

fn to_sql( &self, ty: &Type, out: &mut BytesMut, ) -> Result<IsNull, Box<dyn Error + Sync + Send>>

Converts the value of self into the binary format of the specified Postgres Type, appending it to out.

fn accepts(_ty: &Type) -> bool

Determines if a value of this type can be converted to the specified Postgres Type.

fn encode_format(&self, _ty: &Type) -> Format

Specify the encode format