Enum parquet_format::CompressionCodec

pub enum CompressionCodec {
    Uncompressed,
    Snappy,
    Gzip,
    Lzo,
    Brotli,
    Lz4,
    Zstd,
}

Supported compression algorithms.

Codecs added in 2.4 can be read by readers based on 2.4 and later. Codec support may vary between readers based on the format version and libraries available at runtime. Gzip, Snappy, and LZ4 codecs are widely available, while Zstd and Brotli require additional libraries.

Variants

Uncompressed

Snappy

Gzip

Lzo

Brotli

Lz4

Zstd

Implementations

impl CompressionCodec

pub fn write_to_out_protocol(
    &self,
    o_prot: &mut dyn TOutputProtocol
) -> Result<()>

pub fn read_from_in_protocol(
    i_prot: &mut dyn TInputProtocol
) -> Result<CompressionCodec>

Trait Implementations

impl Clone for CompressionCodec

pub fn clone(&self) -> CompressionCodec

Returns a copy of the value.

pub fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for CompressionCodec

impl Debug for CompressionCodec

pub fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for CompressionCodec

impl Hash for CompressionCodec

pub fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

pub fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given Hasher.

impl Ord for CompressionCodec

pub fn cmp(&self, other: &CompressionCodec) -> Ordering

This method returns an Ordering between self and other.

#[must_use]pub fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

#[must_use]pub fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

#[must_use]pub fn clamp(self, min: Self, max: Self) -> Self

Restrict a value to a certain interval.

impl PartialEq<CompressionCodec> for CompressionCodec

pub fn eq(&self, other: &CompressionCodec) -> bool

This method tests for self and other values to be equal, and is used by ==.

#[must_use]pub fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl PartialOrd<CompressionCodec> for CompressionCodec

pub fn partial_cmp(&self, other: &CompressionCodec) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

#[must_use]pub fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

#[must_use]pub fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

#[must_use]pub fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

#[must_use]pub fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralEq for CompressionCodec

impl StructuralPartialEq for CompressionCodec

impl TryFrom<i32> for CompressionCodec

type Error = Error

The type returned in the event of a conversion error.

pub fn try_from(i: i32) -> Result<Self, Self::Error>

Performs the conversion.