flarrow_api::prelude

Struct Query

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pub struct Query<T: ArrowMessage, F: ArrowMessage> {
    pub raw: RawQuery,
    /* private fields */
}
Expand description

Typed Query to query data from the dataflow

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§raw: RawQuery

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impl<T: ArrowMessage, F: ArrowMessage> Query<T, F>

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pub fn new( tx: MessageSender, rx: MessageReceiver, clock: Arc<HLC>, source: NodeLayout, layout: QueryLayout, ) -> Self

Create a new typed Query

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pub fn blocking_query(&mut self, data: T) -> Result<(Header, F)>

Query a message from the channel and converting it from Arrow format, blocking until one is available, don’t use it in async context

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pub async fn query(&mut self, data: T) -> Result<(Header, F)>

Query a message from the channel and converting it from Arrow format, asynchronously

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impl<T, F> Freeze for Query<T, F>

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impl<T, F> !RefUnwindSafe for Query<T, F>

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impl<T, F> Send for Query<T, F>
where T: Send, F: Send,

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impl<T, F> Sync for Query<T, F>
where T: Sync, F: Sync,

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impl<T, F> Unpin for Query<T, F>
where T: Unpin, F: Unpin,

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impl<T, F> !UnwindSafe for Query<T, F>

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> 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, 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<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