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RowLockOrigin

Struct RowLockOrigin 

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pub struct RowLockOrigin {
    pub qualifier: Arc<str>,
    pub scan_qualifier: Arc<str>,
    pub storage_name: Arc<str>,
    pub doc_id: DocId,
}
Expand description

Base-table identity carried on a composite physical row for FOR UPDATE.

Origins ride beside value fragments. Joins concatenate them; projections and schema remaps keep them. They are not SQL-visible columns and must not be rebuilt from named maps.

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§qualifier: Arc<str>

Visible qualifier of the row source that currently owns the origin. Views, CTEs, and derived tables rebind it to their own alias.

§scan_qualifier: Arc<str>

Qualifier of the base scan that produced the origin. Rebinding at a derived-table boundary leaves it untouched, so a tuple recheck can pin each base scan inside a view or subquery to its own tuples.

§storage_name: Arc<str>§doc_id: DocId

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impl RowLockOrigin

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pub fn new( qualifier: impl Into<String>, storage_name: impl Into<String>, doc_id: DocId, ) -> Self

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pub fn from_shared( qualifier: Arc<str>, storage_name: Arc<str>, doc_id: DocId, ) -> Self

Build an origin from source names shared by every row in one scan.

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impl Clone for RowLockOrigin

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fn clone(&self) -> RowLockOrigin

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

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

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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 Eq for RowLockOrigin

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impl PartialEq for RowLockOrigin

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

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

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

Inequality operator !=. Read more
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impl StructuralPartialEq for RowLockOrigin

Auto Trait Implementations§

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> ErasedDestructor for T
where T: 'static,

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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, 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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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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.