VortexFile

Struct VortexFile 

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

Represents a Vortex file, providing access to its metadata and content.

A VortexFile is created by opening a Vortex file using VortexOpenOptions. It provides methods for accessing file metadata (such as row count, data type, and statistics) and for initiating scans to read the file’s contents.

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impl VortexFile

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pub fn footer(&self) -> &Footer

Returns a reference to the file’s footer, which contains metadata and layout information.

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pub fn row_count(&self) -> u64

Returns the number of rows in the file.

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pub fn dtype(&self) -> &DType

Returns the data type of the file’s contents.

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pub fn file_stats(&self) -> Option<&Arc<[StatsSet]>>

Returns the file’s statistics, if available.

Statistics can be used for query optimization and data exploration.

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pub fn metrics(&self) -> &VortexMetrics

Returns a reference to the file’s metrics.

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pub fn segment_source(&self) -> Arc<dyn SegmentSource>

Create a new segment source for reading from the file.

This may spawn a background I/O driver that will exit when the returned segment source is dropped.

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pub fn layout_reader(&self) -> VortexResult<Arc<dyn LayoutReader>>

Create a new layout reader for the file.

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pub fn scan(&self) -> VortexResult<ScanBuilder<ArrayRef>>

Initiate a scan of the file, returning a builder for configuring the scan.

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pub fn can_prune(&self, filter: &ExprRef) -> VortexResult<bool>

Returns true if the expression will never match any rows in the file.

Trait Implementations§

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impl Clone for VortexFile

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fn clone(&self) -> VortexFile

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

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