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LayoutReaderDataSource

vortex_scan::layout

Struct LayoutReaderDataSource 

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pub struct LayoutReaderDataSource { /* private fields */ }
Expand description

An implementation of a DataSource that reads data from a LayoutReaderRef.

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impl DataSource for LayoutReaderDataSource

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fn dtype(&self) -> &DType

Returns the dtype of the source.
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fn row_count_estimate(&self) -> Estimate<u64>

Returns an estimate of the row count of the source.
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fn scan<'life0, 'async_trait>( &'life0 self, scan_request: ScanRequest, ) -> Pin<Box<dyn Future<Output = VortexResult<DataSourceScanRef>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Returns a scan over the source.
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fn serialize_split(&self, _split: &dyn Split) -> VortexResult<Vec<u8>>

Serialize a split from this data source.
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fn deserialize_split(&self, _split: &[u8]) -> VortexResult<SplitRef>

Deserialize a split that was previously serialized from a compatible data source.

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impl<T> Any for T
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where Self: UpperExp,

Causes self to use its UpperExp implementation when Debug-formatted.
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where Self: UpperHex,

Causes self to use its UpperHex implementation when Debug-formatted.
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const ALIGN: usize

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