FieldCursorStream

datafusion_physical_plan::sorts::stream

Struct FieldCursorStream 

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pub struct FieldCursorStream<T: CursorArray> {
    sort: PhysicalSortExpr,
    streams: FusedStreams,
    reservation: MemoryReservation,
    phantom: PhantomData<fn(T) -> T>,
}
Expand description

Specialized stream for sorts on single primitive columns

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§sort: PhysicalSortExpr

The physical expressions to sort by

§streams: FusedStreams

Input streams

§reservation: MemoryReservation

Create new reservations for each array

§phantom: PhantomData<fn(T) -> T>

Implementations§

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impl<T: CursorArray> FieldCursorStream<T>

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pub fn new( sort: PhysicalSortExpr, streams: Vec<SendableRecordBatchStream>, reservation: MemoryReservation, ) -> Self

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fn convert_batch( &mut self, batch: &RecordBatch, ) -> Result<ArrayValues<T::Values>>

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impl<T: CursorArray> Debug for FieldCursorStream<T>

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl<T: CursorArray> PartitionedStream for FieldCursorStream<T>

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type Output = Result<(ArrayValues<<T as CursorArray>::Values>, RecordBatch), DataFusionError>

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fn partitions(&self) -> usize

Returns the number of partitions
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fn poll_next( &mut self, cx: &mut Context<'_>, stream_idx: usize, ) -> Poll<Option<Self::Output>>

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