Struct bonsaidb::core::schema::AsyncList

pub struct AsyncList<'a, Cn, Cl, PrimaryKey>(_)
where
    Cl: Collection,
    PrimaryKey: KeyEncoding<<Cl as Collection>::PrimaryKey> + PartialEq<PrimaryKey> + ?Sized,
    <Cl as Collection>::PrimaryKey: Borrow<PrimaryKey> + PartialEq<PrimaryKey>;
Expand description

Retrieves a list of documents from a collection, when awaited. This structure also offers functions to customize the options for the operation.

Implementations§

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impl<'a, Cn, Cl, PrimaryKey> AsyncList<'a, Cn, Cl, PrimaryKey>where Cl: Collection, Cn: AsyncConnection, PrimaryKey: KeyEncoding<<Cl as Collection>::PrimaryKey> + PartialEq<PrimaryKey> + ?Sized, <Cl as Collection>::PrimaryKey: Borrow<PrimaryKey> + PartialEq<PrimaryKey>,

pub fn ascending(self) -> AsyncList<'a, Cn, Cl, PrimaryKey>

Lists documents by id in ascending order.

pub fn descending(self) -> AsyncList<'a, Cn, Cl, PrimaryKey>

Lists documents by id in descending order.

pub fn limit(self, maximum_results: u32) -> AsyncList<'a, Cn, Cl, PrimaryKey>

Sets the maximum number of results to return.

pub async fn count(self) -> impl Future<Output = Result<u64, Error>>

Returns the number of documents contained within the range.

Order and limit are ignored if they were set.

println!(
    "Number of documents with id 42 or larger: {}",
    MyCollection::list_async(42.., db).count().await?
);
println!(
    "Number of documents in MyCollection: {}",
    MyCollection::all_async(db).count().await?
);

pub async fn headers( self ) -> impl Future<Output = Result<Vec<Header, Global>, Error>>

Returns the list of document headers contained within the range.

println!(
    "Headers with id 42 or larger: {:?}",
    MyCollection::list_async(42.., db).headers().await?
);
println!(
    "Headers in MyCollection: {:?}",
    MyCollection::all_async(db).headers().await?
);

Trait Implementations§

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impl<'a, Cn, Cl, PrimaryKey> Future for AsyncList<'a, Cn, Cl, PrimaryKey>where Cl: SerializedCollection + Unpin, Cn: AsyncConnection, PrimaryKey: KeyEncoding<<Cl as Collection>::PrimaryKey> + PartialEq<PrimaryKey> + Unpin + 'a + ?Sized, <Cl as Collection>::PrimaryKey: Borrow<PrimaryKey> + PartialEq<PrimaryKey> + Unpin,

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type Output = Result<Vec<CollectionDocument<Cl>, Global>, Error>

The type of value produced on completion.
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fn poll( self: Pin<&mut AsyncList<'a, Cn, Cl, PrimaryKey>>, cx: &mut Context<'_> ) -> Poll<<AsyncList<'a, Cn, Cl, PrimaryKey> as Future>::Output>

Attempt to resolve the future to a final value, registering the current task for wakeup if the value is not yet available. Read more

Auto Trait Implementations§

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impl<'a, Cn, Cl, PrimaryKey> !RefUnwindSafe for AsyncList<'a, Cn, Cl, PrimaryKey>

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impl<'a, Cn, Cl, PrimaryKey: ?Sized> Send for AsyncList<'a, Cn, Cl, PrimaryKey>where Cn: Sync,

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impl<'a, Cn, Cl, PrimaryKey> !Sync for AsyncList<'a, Cn, Cl, PrimaryKey>

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impl<'a, Cn, Cl, PrimaryKey: ?Sized> Unpin for AsyncList<'a, Cn, Cl, PrimaryKey>where Cl: Unpin, <Cl as Collection>::PrimaryKey: Unpin,

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impl<'a, Cn, Cl, PrimaryKey> !UnwindSafe for AsyncList<'a, Cn, Cl, PrimaryKey>

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<'a, T, E> AsTaggedExplicit<'a, E> for Twhere T: 'a,

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fn explicit(self, class: Class, tag: u32) -> TaggedParser<'a, Explicit, Self, E>

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impl<'a, T, E> AsTaggedImplicit<'a, E> for Twhere T: 'a,

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fn implicit( self, class: Class, constructed: bool, tag: u32 ) -> TaggedParser<'a, Implicit, Self, E>

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impl<T> Borrow<T> for Twhere 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 Twhere 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> FutureExt for Twhere T: Future + ?Sized,

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fn map<U, F>(self, f: F) -> Map<Self, F>where F: FnOnce(Self::Output) -> U, Self: Sized,

Map this future’s output to a different type, returning a new future of the resulting type. Read more
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fn map_into<U>(self) -> MapInto<Self, U>where Self::Output: Into<U>, Self: Sized,

Map this future’s output to a different type, returning a new future of the resulting type. Read more
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fn then<Fut, F>(self, f: F) -> Then<Self, Fut, F>where F: FnOnce(Self::Output) -> Fut, Fut: Future, Self: Sized,

Chain on a computation for when a future finished, passing the result of the future to the provided closure f. Read more
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fn left_future<B>(self) -> Either<Self, B>where B: Future<Output = Self::Output>, Self: Sized,

Wrap this future in an Either future, making it the left-hand variant of that Either. Read more
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fn right_future<A>(self) -> Either<A, Self>where A: Future<Output = Self::Output>, Self: Sized,

Wrap this future in an Either future, making it the right-hand variant of that Either. Read more
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fn into_stream(self) -> IntoStream<Self>where Self: Sized,

Convert this future into a single element stream. Read more
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fn flatten(self) -> Flatten<Self>where Self::Output: Future, Self: Sized,

Flatten the execution of this future when the output of this future is itself another future. Read more
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fn flatten_stream(self) -> FlattenStream<Self>where Self::Output: Stream, Self: Sized,

Flatten the execution of this future when the successful result of this future is a stream. Read more
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fn fuse(self) -> Fuse<Self>where Self: Sized,

Fuse a future such that poll will never again be called once it has completed. This method can be used to turn any Future into a FusedFuture. Read more
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fn inspect<F>(self, f: F) -> Inspect<Self, F>where F: FnOnce(&Self::Output), Self: Sized,

Do something with the output of a future before passing it on. Read more
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fn catch_unwind(self) -> CatchUnwind<Self>where Self: Sized + UnwindSafe,

Catches unwinding panics while polling the future. Read more
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fn shared(self) -> Shared<Self>where Self: Sized, Self::Output: Clone,

Create a cloneable handle to this future where all handles will resolve to the same result. Read more
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fn remote_handle(self) -> (Remote<Self>, RemoteHandle<Self::Output>)where Self: Sized,

Turn this future into a future that yields () on completion and sends its output to another future on a separate task. Read more
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fn boxed<'a>( self ) -> Pin<Box<dyn Future<Output = Self::Output> + Send + 'a, Global>>where Self: Sized + Send + 'a,

Wrap the future in a Box, pinning it. Read more
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fn boxed_local<'a>( self ) -> Pin<Box<dyn Future<Output = Self::Output> + 'a, Global>>where Self: Sized + 'a,

Wrap the future in a Box, pinning it. Read more
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fn unit_error(self) -> UnitError<Self>where Self: Sized,

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fn never_error(self) -> NeverError<Self>where Self: Sized,

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fn poll_unpin(&mut self, cx: &mut Context<'_>) -> Poll<Self::Output>where Self: Unpin,

A convenience for calling Future::poll on Unpin future types.
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fn now_or_never(self) -> Option<Self::Output>where Self: Sized,

Evaluates and consumes the future, returning the resulting output if the future is ready after the first call to Future::poll. 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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impl<T, U> Into<U> for Twhere 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<F> IntoFuture for Fwhere F: Future,

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type Output = <F as Future>::Output

The output that the future will produce on completion.
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type IntoFuture = F

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fn into_future(self) -> <F as IntoFuture>::IntoFuture

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type Output = T

Should always be Self
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type Error = Infallible

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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<F, T, E> TryFuture for Fwhere F: Future<Output = Result<T, E>> + ?Sized,

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type Ok = T

The type of successful values yielded by this future
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type Error = E

The type of failures yielded by this future
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fn try_poll( self: Pin<&mut F>, cx: &mut Context<'_> ) -> Poll<<F as Future>::Output>

Poll this TryFuture as if it were a Future. Read more
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impl<Fut> TryFutureExt for Futwhere Fut: TryFuture + ?Sized,

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fn flatten_sink<Item>(self) -> FlattenSink<Self, Self::Ok>where Self::Ok: Sink<Item, Error = Self::Error>, Self: Sized,

Flattens the execution of this future when the successful result of this future is a [Sink]. Read more
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fn map_ok<T, F>(self, f: F) -> MapOk<Self, F>where F: FnOnce(Self::Ok) -> T, Self: Sized,

Maps this future’s success value to a different value. Read more
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Maps this future’s success value to a different value, and permits for error handling resulting in the same type. Read more
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Maps this future’s error value to a different value. Read more
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Maps this future’s Error to a new error type using the Into trait. Read more
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Executes another future if this one resolves to an error. The error value is passed to a closure to create this subsequent future. Read more
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Do something with the error value of a future before passing it on. Read more
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Flatten the execution of this future when the successful result of this future is another future. Read more
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fn unwrap_or_else<F>(self, f: F) -> UnwrapOrElse<Self, F>where Self: Sized, F: FnOnce(Self::Error) -> Self::Ok,

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fn try_poll_unpin( &mut self, cx: &mut Context<'_> ) -> Poll<Result<Self::Ok, Self::Error>>where Self: Unpin,

A convenience method for calling [TryFuture::try_poll] on Unpin future types.
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type Error = <U as TryFrom<T>>::Error

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Performs the conversion.
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