pub struct SerializedRowGroupReader<'a, R: ChunkReader> { /* private fields */ }
Expand description

A serialized implementation for Parquet RowGroupReader.

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impl<'a, R: ChunkReader> SerializedRowGroupReader<'a, R>

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pub fn new( chunk_reader: Arc<R>, metadata: &'a RowGroupMetaData, page_locations: Option<&'a [Vec<PageLocation>]>, props: ReaderPropertiesPtr, ) -> Result<Self>

Creates new row group reader from a file, row group metadata and custom config.

Trait Implementations§

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impl<'a, R: 'static + ChunkReader> RowGroupReader for SerializedRowGroupReader<'a, R>

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fn get_column_bloom_filter(&self, i: usize) -> Option<&Sbbf>

get bloom filter for the ith column

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fn metadata(&self) -> &RowGroupMetaData

Get metadata information about this row group.
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fn num_columns(&self) -> usize

Get the total number of column chunks in this row group.
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fn get_column_page_reader(&self, i: usize) -> Result<Box<dyn PageReader>>

Get page reader for the ith column chunk.
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fn get_row_iter(&self, projection: Option<SchemaType>) -> Result<RowIter<'_>>

Get an iterator over the row in this file, see RowIter for caveats. Read more
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fn get_column_reader(&self, i: usize) -> Result<ColumnReader>

Get value reader for the ith column chunk.

Auto Trait Implementations§

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impl<'a, R> Freeze for SerializedRowGroupReader<'a, R>

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impl<'a, R> RefUnwindSafe for SerializedRowGroupReader<'a, R>
where R: RefUnwindSafe,

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impl<'a, R> Send for SerializedRowGroupReader<'a, R>

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impl<'a, R> Sync for SerializedRowGroupReader<'a, R>

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impl<'a, R> Unpin for SerializedRowGroupReader<'a, R>

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impl<'a, R> UnwindSafe for SerializedRowGroupReader<'a, R>
where R: RefUnwindSafe,

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> Allocation for T
where T: RefUnwindSafe + Send + Sync,