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GenericQueryHandler

backbone_core::cqrs

Struct GenericQueryHandler 

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pub struct GenericQueryHandler<E, F, S>
where
    E: Clone + Send + Sync + 'static,
    F: Clone + Send + Sync + Default + 'static,
    S: Send + Sync + 'static,
{ /* private fields */ }
Expand description

Handles all standard CRUD queries for entity E.

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impl<E, F, S> GenericQueryHandler<E, F, S>
where E: Clone + Send + Sync + 'static, F: Clone + Send + Sync + Default + 'static, S: Send + Sync + 'static,

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pub fn new(service: Arc<S>) -> Self

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impl<E, F, S> QueryHandler<GenericGetQuery<E>> for GenericQueryHandler<E, F, S>
where E: Clone + Send + Sync + 'static, F: Clone + Send + Sync + Default + 'static, S: CqrsReadService<E>,

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type Error = ServiceError

Error type for query execution failures.
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fn handle<'life0, 'async_trait>( &'life0 self, query: GenericGetQuery<E>, ) -> Pin<Box<dyn Future<Output = Result<Option<E>, Self::Error>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Execute the query and return the result.

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impl<E, F, S> Freeze for GenericQueryHandler<E, F, S>
where Arc<S>: Freeze, PhantomData<(E, F)>: Freeze,

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impl<E, F, S> RefUnwindSafe for GenericQueryHandler<E, F, S>
where Arc<S>: RefUnwindSafe, PhantomData<(E, F)>: RefUnwindSafe,

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impl<E, F, S> Send for GenericQueryHandler<E, F, S>
where Arc<S>: Send, PhantomData<(E, F)>: Send,

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impl<E, F, S> Sync for GenericQueryHandler<E, F, S>
where Arc<S>: Sync, PhantomData<(E, F)>: Sync,

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impl<E, F, S> Unpin for GenericQueryHandler<E, F, S>
where Arc<S>: Unpin, PhantomData<(E, F)>: Unpin,

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impl<E, F, S> UnsafeUnpin for GenericQueryHandler<E, F, S>
where Arc<S>: UnsafeUnpin, PhantomData<(E, F)>: UnsafeUnpin,

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impl<E, F, S> UnwindSafe for GenericQueryHandler<E, F, S>
where Arc<S>: UnwindSafe, PhantomData<(E, F)>: UnwindSafe,

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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<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
where ST: ?Sized, DT: ?Sized,

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impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
where ST: ?Sized, DT: ?Sized,

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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> 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> Read<Exclusive, BecauseExclusive> for T
where T: ?Sized,

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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, U> TryFrom<U> for T
where U: Into<T>,

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type Error = !

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

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>,

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