Struct SpgTypeInfo 

pub struct SpgTypeInfo { /* private fields */ }

SPG column type info. Stores the concrete Kind so the adapter can drive PG-shape column metadata that #[derive(FromRow)] expects.

Implementations

impl SpgTypeInfo

pub const fn of(kind: Kind) -> Self

Construct a TypeInfo for a known kind.

pub const fn kind(&self) -> Kind

The concrete kind tag.

pub fn from_data_type(ty: DataType) -> Self

v7.16.0 — translate from the engine’s [DataType] to the adapter’s typed Kind. Used by the fetch path to build column metadata for SpgRow. Any DataType the adapter hasn’t bridged yet maps to Kind::Null — downstream Decode calls then fail with a clear “cannot decode” message identifying the column type.

Trait Implementations

impl Clone for SpgTypeInfo

fn clone(&self) -> SpgTypeInfo

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SpgTypeInfo

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

Formats the value using the given formatter.

impl Display for SpgTypeInfo

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

Formats the value using the given formatter.

impl Eq for SpgTypeInfo

impl PartialEq for SpgTypeInfo

fn eq(&self, other: &SpgTypeInfo) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for SpgTypeInfo

impl TypeInfo for SpgTypeInfo

fn is_null(&self) -> bool

fn name(&self) -> &str

Returns the database system name of the type. Length specifiers should not be included. Common type names are VARCHAR, TEXT, or INT. Type names should be uppercase. They should be a rough approximation of how they are written in SQL in the given database.

fn type_compatible(&self, other: &Self) -> bool

where Self: Sized,

Return true if self and other represent mutually compatible types.