ArrowOpener

datafusion::datasource::physical_plan::arrow

Struct ArrowOpener 

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pub struct ArrowOpener {
    pub object_store: Arc<dyn ObjectStore>,
    pub projection: Option<Vec<usize>>,
}
Expand description

The struct arrow that implements [FileOpener] trait

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§object_store: Arc<dyn ObjectStore>§projection: Option<Vec<usize>>

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impl FileOpener for ArrowOpener

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fn open( &self, partitioned_file: PartitionedFile, ) -> Result<Pin<Box<dyn Future<Output = Result<Pin<Box<dyn Stream<Item = Result<RecordBatch, DataFusionError>> + Send>>, DataFusionError>> + Send>>, DataFusionError>

Asynchronously open the specified file and return a stream of RecordBatch

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