diesel::pg::data_types

Struct PgLsn

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pub struct PgLsn(pub u64);
Available on crate feature postgres_backend only.
Expand description

A type encoding a position in the PostgreSQL Write Ahead Log (WAL). In Postgres, it is represented as an unsigned 64 bit integer.

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§0: u64

Trait Implementations§

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impl<'__expr> AsExpression<Nullable<PgLsn>> for &'__expr PgLsn

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type Expression = Bound<Nullable<PgLsn>, &'__expr PgLsn>

The expression being returned
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fn as_expression(self) -> <Self as AsExpression<Nullable<PgLsn>>>::Expression

Perform the conversion
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impl AsExpression<Nullable<PgLsn>> for PgLsn

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type Expression = Bound<Nullable<PgLsn>, PgLsn>

The expression being returned
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fn as_expression(self) -> <Self as AsExpression<Nullable<PgLsn>>>::Expression

Perform the conversion
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impl<'__expr> AsExpression<PgLsn> for &'__expr PgLsn

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type Expression = Bound<PgLsn, &'__expr PgLsn>

The expression being returned
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fn as_expression(self) -> <Self as AsExpression<PgLsn>>::Expression

Perform the conversion
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impl AsExpression<PgLsn> for PgLsn

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type Expression = Bound<PgLsn, PgLsn>

The expression being returned
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fn as_expression(self) -> <Self as AsExpression<PgLsn>>::Expression

Perform the conversion
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impl Clone for PgLsn

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fn clone(&self) -> PgLsn

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for PgLsn

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

Formats the value using the given formatter. Read more
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impl Default for PgLsn

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fn default() -> PgLsn

Returns the “default value” for a type. Read more
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impl FromSql<PgLsn, Pg> for PgLsn

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fn from_sql(value: PgValue<'_>) -> Result<Self>

See the trait documentation.
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fn from_nullable_sql(bytes: Option<DB::RawValue<'_>>) -> Result<Self>

A specialized variant of from_sql for handling null values. Read more
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impl PartialEq for PgLsn

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

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<__DB, __ST> Queryable<__ST, __DB> for PgLsn
where __DB: Backend, __ST: SingleValue, Self: FromSql<__ST, __DB>,

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type Row = PgLsn

The Rust type you’d like to map from. Read more
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fn build(row: Self) -> Result<Self>

Construct an instance of this type
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impl<__DB> ToSql<Nullable<PgLsn>, __DB> for PgLsn
where __DB: Backend, Self: ToSql<PgLsn, __DB>,

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fn to_sql<'__b>(&'__b self, out: &mut Output<'__b, '_, __DB>) -> Result

See the trait documentation.
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impl ToSql<PgLsn, Pg> for PgLsn

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fn to_sql<'b>(&'b self, out: &mut Output<'b, '_, Pg>) -> Result

See the trait documentation.
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impl Copy for PgLsn

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impl Eq for PgLsn

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impl StructuralPartialEq for PgLsn

Auto Trait Implementations§

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impl Freeze for PgLsn

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impl RefUnwindSafe for PgLsn

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impl Send for PgLsn

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impl Sync for PgLsn

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impl Unpin for PgLsn

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impl UnwindSafe for PgLsn

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> Downcast for T
where T: Any,

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fn into_any(self: Box<T>) -> Box<dyn Any>

Converts Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>, which can then be downcast into Box<dyn ConcreteType> where ConcreteType implements Trait.
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fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>

Converts Rc<Trait> (where Trait: Downcast) to Rc<Any>, which can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait.
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fn as_any(&self) -> &(dyn Any + 'static)

Converts &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s.
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fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Converts &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &mut Any’s vtable from &mut Trait’s.
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impl<T> DowncastSend for T
where T: Any + Send,

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fn into_any_send(self: Box<T>) -> Box<dyn Any + Send>

Converts Box<Trait> (where Trait: DowncastSend) to Box<dyn Any + Send>, which can then be downcast into Box<ConcreteType> where ConcreteType implements Trait.
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impl<T> DowncastSync for T
where T: Any + Send + Sync,

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fn into_any_sync(self: Box<T>) -> Box<dyn Any + Sync + Send>

Converts Box<Trait> (where Trait: DowncastSync) to Box<dyn Any + Send + Sync>, which can then be downcast into Box<ConcreteType> where ConcreteType implements Trait.
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fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Sync + Send>

Converts Arc<Trait> (where Trait: DowncastSync) to Arc<Any>, which can then be downcast into Arc<ConcreteType> where ConcreteType implements Trait.
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, ST, DB> FromSqlRow<ST, DB> for T
where T: Queryable<ST, DB>, ST: SqlTypeOrSelectable, DB: Backend, <T as Queryable<ST, DB>>::Row: FromStaticSqlRow<ST, DB>,

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fn build_from_row<'a>( row: &impl Row<'a, DB>, ) -> Result<T, Box<dyn Error + Sync + Send>>

See the trait documentation.
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impl<T, ST, DB> FromStaticSqlRow<ST, DB> for T
where DB: Backend, T: FromSql<ST, DB>, ST: SingleValue,

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fn build_from_row<'a>( row: &impl Row<'a, DB>, ) -> Result<T, Box<dyn Error + Sync + Send>>

See the trait documentation
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoSql for T

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fn into_sql<T>(self) -> AsExprOf<Self, T>
where Self: AsExpression<T> + Sized, T: SqlType + TypedExpressionType,

Convert self to an expression for Diesel’s query builder. Read more
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fn as_sql<'a, T>(&'a self) -> AsExprOf<&'a Self, T>
where &'a Self: AsExpression<T>, T: SqlType + TypedExpressionType,

Convert &self to an expression for Diesel’s query builder. Read more
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impl<T, ST, DB> StaticallySizedRow<ST, DB> for T
where ST: SqlTypeOrSelectable + TupleSize, T: Queryable<ST, DB>, DB: Backend,

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const FIELD_COUNT: usize = const FIELD_COUNT: usize = <ST as crate::util::TupleSize>::SIZE;

The number of fields that this type will consume.
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> ErasedDestructor for T
where T: 'static,

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impl<T> MaybeSendSync for T