Struct kaspa_database::prelude::CachedDbItem

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pub struct CachedDbItem<T> { /* private fields */ }
Expand description

A cached DB item with concurrency support

Implementations§

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impl<T> CachedDbItem<T>

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pub fn new(db: Arc<DB>, key: Vec<u8>) -> Self

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pub fn read(&self) -> Result<T, StoreError>
where T: Clone + DeserializeOwned,

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pub fn write( &mut self, writer: impl DbWriter, item: &T ) -> Result<(), StoreError>
where T: Clone + Serialize,

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pub fn remove(&mut self, writer: impl DbWriter) -> Result<(), StoreError>

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pub fn update<F>( &mut self, writer: impl DbWriter, op: F ) -> Result<T, StoreError>
where T: Clone + Serialize + DeserializeOwned, F: Fn(T) -> T,

Trait Implementations§

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impl<T: Clone> Clone for CachedDbItem<T>

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fn clone(&self) -> CachedDbItem<T>

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

Auto Trait Implementations§

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impl<T> !RefUnwindSafe for CachedDbItem<T>

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impl<T> Send for CachedDbItem<T>
where T: Sync + Send,

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impl<T> Sync for CachedDbItem<T>
where T: Sync + Send,

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impl<T> Unpin for CachedDbItem<T>

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impl<T> !UnwindSafe for CachedDbItem<T>

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> Any for T
where T: Any,

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

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fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>

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fn type_name(&self) -> &'static str

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impl<T> AnySync for T
where T: Any + Send + Sync,

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fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Sync + Send>

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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> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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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> Same for T

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type Output = T

Should always be Self
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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<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a [WithDispatch] wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a [WithDispatch] wrapper. Read more