Struct ItemPointerData

#[repr(C, packed(2))]
pub struct ItemPointerData {
    pub ip_blkid: BlockIdData,
    pub ip_posid: u16,
}

Fields

ip_blkid: BlockIdData

ip_posid: u16

Trait Implementations

impl Clone for ItemPointerData

fn clone(&self) -> ItemPointerData

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ItemPointerData

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

Formats the value using the given formatter.

impl Default for ItemPointerData

fn default() -> ItemPointerData

Returns the “default value” for a type.

impl FromDatum for ItemPointerData

unsafe fn from_polymorphic_datum( datum: Datum, is_null: bool, _typoid: Oid, ) -> Option<ItemPointerData>

Like from_datum for instantiating polymorphic types which require preserving the dynamic type metadata.

const GET_TYPOID: bool = false

Should a type OID be fetched when calling from_datum?

unsafe fn from_datum(datum: Datum, is_null: bool) -> Option<Self>

where Self: Sized,

Safety

unsafe fn from_datum_in_memory_context( memory_context: PgMemoryContexts, datum: Datum, is_null: bool, typoid: Oid, ) -> Option<Self>

where Self: Sized,

Default implementation switched to the specified memory context and then simply calls FromDatum::from_datum(...) from within that context.

unsafe fn try_from_datum( datum: Datum, is_null: bool, type_oid: Oid, ) -> Result<Option<Self>, TryFromDatumError>

where Self: Sized + IntoDatum,

try_from_datum is a convenience wrapper around FromDatum::from_datum that returns a a Result around an Option, as a Datum can be null. It’s intended to be used in situations where the caller needs to know whether the type conversion succeeded or failed.

unsafe fn try_from_datum_in_memory_context( memory_context: PgMemoryContexts, datum: Datum, is_null: bool, type_oid: Oid, ) -> Result<Option<Self>, TryFromDatumError>

where Self: Sized + IntoDatum,

A version of try_from_datum that switches to the given context to convert from Datum

impl IntoDatum for ItemPointerData

fn into_datum(self) -> Option<Datum>

fn type_oid() -> Oid

fn composite_type_oid(&self) -> Option<Oid>

fn array_type_oid() -> Oid

fn is_compatible_with(other: Oid) -> bool

Is a Datum of this type compatible with another Postgres type?

impl SqlTranslatable for ItemPointerData

fn argument_sql() -> Result<SqlMapping, ArgumentError>

fn return_sql() -> Result<Returns, ReturnsError>

fn type_name() -> &'static str

fn variadic() -> bool

fn optional() -> bool

fn entity() -> FunctionMetadataTypeEntity

impl Copy for ItemPointerData