Entry

wb_cache::entry

Struct Entry 

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pub struct Entry<DC>
where
    DC: DataController,
{ /* private fields */ }
Expand description

This is a snapshot of a single entry in the cache. Note that as a snapshot, it doesn’t refer to the value in the cache, but holds a copy of it.

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impl<DC> Entry<DC>
where DC: DataController,

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pub fn builder() -> EntryBuilder<DC>

Creates a new builder for this struct.

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impl<DC> Entry<DC>
where DC: DataController,

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pub async fn value(&self) -> Result<&DC::Value, Arc<DC::Error>>

The snapshot value.

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pub fn key(&self) -> &DC::Key

The key of the entry.

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pub fn into_value(self) -> DC::Value

Consumes the entry and returns its stored value.

Trait Implementations§

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impl<DC> Child for Entry<DC>
where DC: DataController,

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type WeakParent = Weak<Cache<DC>>

Type of weak reference to the parent.
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type FXPParent = Arc<Cache<DC>>

For use of the child_build! and child_builder! macros.
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type RcParent = Arc<Cache<DC>>

Type of strong reference to the parent.
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fn parent(&self) -> Self::RcParent

Return a strong reference to the parent.
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fn parent_downgrade(&self) -> Self::WeakParent

Return a weak reference to the parent.
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fn __fxplus_parent(parent: Self::WeakParent) -> Self::FXPParent

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impl<DC> Debug for Entry<DC>
where DC: DataController,

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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<DC> FXStruct for Entry<DC>
where DC: DataController,

Auto Trait Implementations§

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impl<DC> Freeze for Entry<DC>
where <DC as DataController>::Key: Freeze, <DC as DataController>::Value: Freeze,

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impl<DC> !RefUnwindSafe for Entry<DC>

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impl<DC> Send for Entry<DC>

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impl<DC> Sync for Entry<DC>

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impl<DC> Unpin for Entry<DC>
where <DC as DataController>::Key: Unpin, <DC as DataController>::Value: Unpin,

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impl<DC> !UnwindSafe for Entry<DC>

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, U> FXInto<U> for T
where U: FXFrom<T>,

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fn fx_into(self) -> U

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impl<T, U> FXTryInto<U> for T
where U: FXTryFrom<T>,

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

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fn fx_try_into(self) -> Result<U, <T as FXTryInto<U>>::Error>

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impl<T> Fake for T

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fn fake<U>(&self) -> U
where Self: FakeBase<U>,

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fn fake_with_rng<U, R>(&self, rng: &mut R) -> U
where R: Rng + ?Sized, Self: FakeBase<U>,

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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> FutureExt for T

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fn with_context(self, otel_cx: Context) -> WithContext<Self>

Attaches the provided Context to this type, returning a WithContext wrapper. Read more
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fn with_current_context(self) -> WithContext<Self>

Attaches the current Context to this type, returning a WithContext wrapper. Read more
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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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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> IntoRequest<T> for T

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fn into_request(self) -> Request<T>

Wrap the input message T in a tonic::Request
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impl<L> LayerExt<L> for L

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fn named_layer<S>(&self, service: S) -> Layered<<L as Layer<S>>::Service, S>
where L: Layer<S>,

Applies the layer to a service and wraps it in Layered.
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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> PolicyExt for T
where T: ?Sized,

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fn and<P, B, E>(self, other: P) -> And<T, P>
where T: Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns Action::Follow only if self and other return Action::Follow. Read more
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fn or<P, B, E>(self, other: P) -> Or<T, P>
where T: Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns Action::Follow if either self or other returns Action::Follow. Read more
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impl<T> Same for T

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type Output = T

Should always be Self
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impl<SS, SP> SupersetOf<SS> for SP
where SS: SubsetOf<SP>,

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fn to_subset(&self) -> Option<SS>

The inverse inclusion map: attempts to construct self from the equivalent element of its superset. Read more
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fn is_in_subset(&self) -> bool

Checks if self is actually part of its subset T (and can be converted to it).
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fn to_subset_unchecked(&self) -> SS

Use with care! Same as self.to_subset but without any property checks. Always succeeds.
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fn from_subset(element: &SS) -> SP

The inclusion map: converts self to the equivalent element of its superset.
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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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fn vzip(self) -> V

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where S: Into<Dispatch>,

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impl<T> ErasedDestructor for T
where T: 'static,