Enum CompressionCodec 

pub enum CompressionCodec {
    None,
    Delta,
    BitPacked {
        bits: u8,
    },
    DeltaBitPacked {
        bits: u8,
    },
    Dictionary,
    BitVector,
    RunLength,
}

Compression codec identifier.

Variants

None

No compression (raw values).

Delta

Delta encoding for integers.

BitPacked

Bit packing for small integers.

Fields

bits: u8

Number of bits per value.

DeltaBitPacked

Delta + bit packing for sorted integers.

Fields

bits: u8

Number of bits per delta.

Dictionary

Dictionary encoding for strings.

BitVector

Bit vector for booleans.

RunLength

Run-length encoding for repeated values.

Implementations

impl CompressionCodec

pub fn name(&self) -> &'static str

Returns a human-readable name for the codec.

pub fn is_lossless(&self) -> bool

Returns whether this codec is lossless.

Trait Implementations

impl Clone for CompressionCodec

fn clone(&self) -> CompressionCodec

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CompressionCodec

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

Formats the value using the given formatter.

impl Hash for CompressionCodec

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

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 PartialEq for CompressionCodec

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl Copy for CompressionCodec

impl Eq for CompressionCodec

impl StructuralPartialEq for CompressionCodec