Struct parquet::decoding::RleValueDecoder

pub struct RleValueDecoder<T: DataType> { /* fields omitted */ }

RLE/Bit-Packing hybrid decoding for values. Currently is used only for data pages v2 and supports boolean types. See RleValueEncoder for more information.

Methods

impl<T: DataType> RleValueDecoder<T>

pub fn new() -> Self

Trait Implementations

impl<T: DataType> Decoder<T> for RleValueDecoder<T>

fn set_data(&mut self, _data: ByteBufferPtr, _num_values: usize) -> Result<()>

Sets the data to decode to be data, which should contain num_values of values to decode.

fn values_left(&self) -> usize

Returns the number of values left in this decoder stream.

fn encoding(&self) -> Encoding

Returns the encoding for this decoder.

fn get(&mut self, buffer: &mut [T::T]) -> Result<usize>

Consumes values from this decoder and write the results to buffer. This will try to fill up buffer.

impl Decoder<BoolType> for RleValueDecoder<BoolType>

fn set_data(&mut self, data: ByteBufferPtr, num_values: usize) -> Result<()>

Sets the data to decode to be data, which should contain num_values of values to decode.

fn get(&mut self, buffer: &mut [T::T]) -> Result<usize>

Consumes values from this decoder and write the results to buffer. This will try to fill up buffer.

fn values_left(&self) -> usize

Returns the number of values left in this decoder stream.

fn encoding(&self) -> Encoding

Returns the encoding for this decoder.