Struct datafusion::common::arrow::ipc::BodyCompressionMethod

#[repr(transparent)]
pub struct BodyCompressionMethod(pub i8);

Provided for forward compatibility in case we need to support different strategies for compressing the IPC message body (like whole-body compression rather than buffer-level) in the future

Tuple Fields

0: i8

Implementations

impl BodyCompressionMethod

pub const BUFFER: BodyCompressionMethod = _

Each constituent buffer is first compressed with the indicated compressor, and then written with the uncompressed length in the first 8 bytes as a 64-bit little-endian signed integer followed by the compressed buffer bytes (and then padding as required by the protocol). The uncompressed length may be set to -1 to indicate that the data that follows is not compressed, which can be useful for cases where compression does not yield appreciable savings.

pub const ENUM_MIN: i8 = 0i8

pub const ENUM_MAX: i8 = 0i8

pub const ENUM_VALUES: &'static [BodyCompressionMethod] = _

pub fn variant_name(self) -> Option<&'static str>

Returns the variant’s name or “” if unknown.

Trait Implementations

impl Clone for BodyCompressionMethod

fn clone(&self) -> BodyCompressionMethod

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for BodyCompressionMethod

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

Formats the value using the given formatter.

impl Default for BodyCompressionMethod

fn default() -> BodyCompressionMethod

Returns the “default value” for a type.

impl EndianScalar for BodyCompressionMethod

type Scalar = i8

fn to_little_endian(self) -> i8

fn from_little_endian(v: i8) -> BodyCompressionMethod

impl<'a> Follow<'a> for BodyCompressionMethod

type Inner = BodyCompressionMethod

unsafe fn follow( buf: &'a [u8], loc: usize ) -> <BodyCompressionMethod as Follow<'a>>::Inner

Safety

impl Hash for BodyCompressionMethod

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

Feeds this value into the given Hasher.

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

Feeds a slice of this type into the given Hasher.

impl Ord for BodyCompressionMethod

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

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Selfwhere Self: Sized + PartialOrd,

Restrict a value to a certain interval.

impl PartialEq for BodyCompressionMethod

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

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

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for BodyCompressionMethod

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

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

fn lt(&self, other: &Rhs) -> bool

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

fn le(&self, other: &Rhs) -> bool

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

fn gt(&self, other: &Rhs) -> bool

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

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 Push for BodyCompressionMethod

type Output = BodyCompressionMethod

unsafe fn push(&self, dst: &mut [u8], _written_len: usize)

Safety

fn size() -> usize

fn alignment() -> PushAlignment

impl<'a> Verifiable for BodyCompressionMethod

fn run_verifier( v: &mut Verifier<'_, '_>, pos: usize ) -> Result<(), InvalidFlatbuffer>

Runs the verifier for this type, assuming its at position pos in the verifier’s buffer. Should not need to be called directly.

impl Copy for BodyCompressionMethod

impl Eq for BodyCompressionMethod

impl SimpleToVerifyInSlice for BodyCompressionMethod

impl StructuralEq for BodyCompressionMethod

impl StructuralPartialEq for BodyCompressionMethod