# Struct flechasdb::asyncdb::stored::query::Query

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    pub struct Query<'db, 'v, T, FS, V, EV>where
        T: Send,
        FS: Send,
        V: Send + ?Sized,{ /* private fields */ }

Expand description

Future that asynchronously runs a query.

## Implementations§

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### impl<'db, 'v, T, FS, V, EV> Query<'db, 'v, T, FS, V, EV>where T: Send, FS: Send, V: Send + ?Sized,

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#### pub fn new( db: &'db Database<T, FS>, v: &'v V, k: NonZeroUsize, nprobe: NonZeroUsize, event_handler: EV ) -> Self

Creates a new query.

## Trait Implementations§

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### impl<'db, 'v, T, FS, V, EV> Future for Query<'db, 'v, T, FS, V, EV>where T: Scalar + Send, FS: Send, V: AsSlice<T> + Send + ?Sized, EV: FnMut(QueryEvent), Database<T, FS>: LoadPartitionCentroids<'db, T> + LoadCodebook<T> + LoadPartition<'db, T>,

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#### type Output = Result<Vec<QueryResult<'db, T, FS>, Global>, Error>

The type of value produced on completion.
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#### fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::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
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### impl<'__pin, 'db, 'v, T, FS, V, EV> Unpin for Query<'db, 'v, T, FS, V, EV>where __Origin<'__pin, 'db, 'v, T, FS, V, EV>: Unpin, T: Send, FS: Send, V: Send + ?Sized,

## Auto Trait Implementations§

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### impl<'db, 'v, T, FS, V, EV> !RefUnwindSafe for Query<'db, 'v, T, FS, V, EV>

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### impl<'db, 'v, T, FS, V, EV> !Send for Query<'db, 'v, T, FS, V, EV>

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### impl<'db, 'v, T, FS, V, EV> !Sync for Query<'db, 'v, T, FS, V, EV>

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### impl<'db, 'v, T, FS, V, EV> !UnwindSafe for Query<'db, 'v, T, FS, V, EV>

## 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<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,

Turns a `Future<Output = T>` into a `TryFuture<Ok = T, Error = ()`>.
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#### fn never_error(self) -> NeverError<Self>where Self: Sized,

Turns a `Future<Output = T>` into a `TryFuture<Ok = T, Error = Never`>.
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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, 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

Which kind of future are we turning this into?
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#### fn into_future(self) -> <F as IntoFuture>::IntoFuture

Creates a future from a value. Read more
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### impl<T, U> TryFrom<U> for Twhere 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<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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#### fn map_ok_or_else<T, E, F>(self, e: E, f: F) -> MapOkOrElse<Self, F, E>where F: FnOnce(Self::Ok) -> T, E: FnOnce(Self::Error) -> T, Self: Sized,

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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#### fn map_err<E, F>(self, f: F) -> MapErr<Self, F>where F: FnOnce(Self::Error) -> E, Self: Sized,

Maps this future’s error value to a different value. Read more
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#### fn err_into<E>(self) -> ErrInto<Self, E>where Self: Sized, Self::Error: Into<E>,

Maps this future’s `Error` to a new error type using the `Into` trait. Read more
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#### fn ok_into<U>(self) -> OkInto<Self, U>where Self: Sized, Self::Ok: Into<U>,

Maps this future’s `Ok` to a new type using the `Into` trait.
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#### fn and_then<Fut, F>(self, f: F) -> AndThen<Self, Fut, F>where F: FnOnce(Self::Ok) -> Fut, Fut: TryFuture<Error = Self::Error>, Self: Sized,

Executes another future after this one resolves successfully. The success value is passed to a closure to create this subsequent future. Read more
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#### fn or_else<Fut, F>(self, f: F) -> OrElse<Self, Fut, F>where F: FnOnce(Self::Error) -> Fut, Fut: TryFuture<Ok = Self::Ok>, Self: Sized,

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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#### fn inspect_ok<F>(self, f: F) -> InspectOk<Self, F>where F: FnOnce(&Self::Ok), Self: Sized,

Do something with the success value of a future before passing it on. Read more
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#### fn inspect_err<F>(self, f: F) -> InspectErr<Self, F>where F: FnOnce(&Self::Error), Self: Sized,

Do something with the error value of a future before passing it on. Read more
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#### fn try_flatten(self) -> TryFlatten<Self, Self::Ok>where Self::Ok: TryFuture<Error = Self::Error>, Self: Sized,

Flatten the execution of this future when the successful result of this future is another future. Read more
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#### fn try_flatten_stream(self) -> TryFlattenStream<Self>where Self::Ok: TryStream<Error = Self::Error>, 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 unwrap_or_else<F>(self, f: F) -> UnwrapOrElse<Self, F>where Self: Sized, F: FnOnce(Self::Error) -> Self::Ok,

Unwraps this future’s output, producing a future with this future’s `Ok` type as its `Output` type. Read more
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#### fn into_future(self) -> IntoFuture<Self>where Self: Sized,

Wraps a [`TryFuture`] into a type that implements `Future`. Read more
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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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### impl<T, U> TryInto<U> for Twhere 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 Twhere V: MultiLane<T>,

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#### fn vzip(self) -> V