Struct TransactionId 

pub struct TransactionId(/* private fields */);

An xid type from PostgreSQL

Implementations

impl TransactionId

pub const INVALID: TransactionId

pub const BOOTSTRAP: TransactionId

pub const FROZEN: TransactionId

pub const FIRST_NORMAL: TransactionId

pub const MAX: TransactionId

pub const fn from_inner(xid: u32) -> TransactionId

pub const fn into_inner(self) -> u32

Trait Implementations

impl<'fcx> ArgAbi<'fcx> for TransactionId

unsafe fn unbox_arg_unchecked(arg: Arg<'_, 'fcx>) -> Self

Unbox an argument with a matching type.

unsafe fn unbox_nullable_arg(arg: Arg<'_, 'fcx>) -> Nullable<Self>

Unbox a nullable arg

fn is_virtual_arg() -> bool

Virtual args do not affect Datum arg iteration

impl BoxRet for TransactionId

unsafe fn box_into<'fcx>(self, fcinfo: &mut FcInfo<'fcx>) -> Datum<'fcx>

Safety

impl Clone for TransactionId

fn clone(&self) -> TransactionId

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for TransactionId

impl Debug for TransactionId

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

Formats the value using the given formatter.

impl Default for TransactionId

fn default() -> TransactionId

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for TransactionId

fn deserialize<__D>( __deserializer: __D, ) -> Result<TransactionId, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for TransactionId

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

Formats the value using the given formatter.

impl Eq for TransactionId

impl From<TransactionId> for Datum

fn from(xid: TransactionId) -> Datum

Converts to this type from the input type.

impl From<u32> for TransactionId

fn from(xid: u32) -> TransactionId

Converts to this type from the input type.

impl FromDatum for TransactionId

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

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>

Safety

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

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: 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: IntoDatum,

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

impl Hash for TransactionId

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl IntoDatum for TransactionId

fn into_datum(self) -> Option<Datum>

fn type_oid() -> Oid

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

fn is_compatible_with(other: Oid) -> bool

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

impl Ord for TransactionId

fn cmp(&self, other: &TransactionId) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for TransactionId

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for TransactionId

fn partial_cmp(&self, other: &TransactionId) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for TransactionId

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl SqlTranslatable for TransactionId

const TYPE_IDENT: &'static str = "pgrx_pg_sys::submodules::transaction_id::TransactionId"

const TYPE_ORIGIN: TypeOrigin = TypeOrigin::External

const ARGUMENT_SQL: Result<SqlMappingRef, ArgumentError>

const RETURN_SQL: Result<ReturnsRef, ReturnsError>

fn type_name() -> &'static str

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

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

fn entity() -> FunctionMetadataTypeEntity<'static>

impl StructuralPartialEq for TransactionId