Struct LimitingSink

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pub struct LimitingSink { /* private fields */ }

Expand description

Limiting sink that stops after collecting N rows.

Enables early termination for LIMIT queries.

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impl LimitingSink

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pub fn new(limit: usize) -> Self

Create a new limiting sink.

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pub fn limit(&self) -> usize

Get the limit.

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pub fn is_full(&self) -> bool

Check if limit has been reached.

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pub fn chunks(&self) -> &[DataChunk]

Get collected chunks.

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pub fn into_chunks(self) -> Vec<DataChunk>

Take ownership of collected chunks.

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pub fn row_count(&self) -> usize

Get collected row count.

Trait Implementations§

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impl Sink for LimitingSink

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fn consume(&mut self, chunk: DataChunk) -> Result<bool, OperatorError>

Consume a chunk of data. Read more

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fn finalize(&mut self) -> Result<(), OperatorError>

Called when all input has been processed.

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

Name of this sink for debugging.

Auto Trait Implementations§

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impl UnwindSafe for LimitingSink

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, U> Into 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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