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FileByteSource

polars_io::utils::byte_source

Struct FileByteSource 

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pub struct FileByteSource { /* private fields */ }
Available on crate feature async only.
Expand description

Byte source backed by a File.

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impl FileByteSource

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pub fn try_new_from_std( file: File, read_context: FileReadContext, io_metrics: Option<Arc<IOMetrics>>, ) -> PolarsResult<Self>

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pub fn set_io_metrics( &mut self, io_metrics: Option<Arc<IOMetrics>>, ) -> &mut Self

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pub fn io_metrics(&self) -> &OptIOMetrics

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impl ByteSource for FileByteSource

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async fn get_size(&self) -> PolarsResult<usize>

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async fn get_range(&self, range: Range<usize>) -> PolarsResult<Buffer<u8>>

Panics Read more
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async fn get_ranges( &self, ranges: &mut [Range<usize>], ) -> PolarsResult<PlHashMap<usize, Buffer<u8>>>

Note: This will mutably sort ranges for coalescing.
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impl From<FileByteSource> for DynByteSource

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fn from(value: FileByteSource) -> Self

Converts to this type from the input type.

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