Enum CodecType

#[repr(u8)]
pub enum CodecType {
    Bitpacked = 0,
    Linear = 1,
    BlockwiseLinear = 2,
}

Available codecs to use to encode the u64 (via MonotonicallyMappableToU64) converted data.

Variants

Bitpacked = 0

Bitpack all values in the value range. The number of bits is defined by the amplitude column.max_value() - column.min_value()

Linear = 1

Linear interpolation puts a line between the first and last value and then bitpacks the values by the offset from the line. The number of bits is defined by the max deviation from the line.

BlockwiseLinear = 2

Same as CodecType::Linear, but encodes in blocks of 512 elements.

Implementations

impl CodecType

pub fn estimator(&self) -> Box<dyn ColumnCodecEstimator>

Returns a boxed codec estimator associated to a given CodecType.

Trait Implementations

impl Clone for CodecType

fn clone(&self) -> CodecType

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for CodecType

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

Formats the value using the given formatter.

impl Ord for CodecType

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

This method returns an Ordering between self and other.

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

where Self: Sized,

Compares and returns the maximum of two values.

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

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for CodecType

fn eq(&self, other: &CodecType) -> 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 PartialOrd for CodecType

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

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

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

Tests less than (for self and other) and is used by the < operator.

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

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

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

Tests greater than (for self and other) and is used by the > operator.

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

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

impl Copy for CodecType

impl Eq for CodecType

impl StructuralPartialEq for CodecType