Skip to main content

CodecSelector

grafeo_core::storage::codec

Struct CodecSelector 

Source 
pub struct CodecSelector;
Expand description

Analyzes your data and picks the best compression codec.

Don’t want to think about compression? Call select_for_integers() or select_for_strings() and we’ll examine your data to pick the codec with the best compression ratio.

Implementations§

Source§

impl CodecSelector

Source

pub fn select_for_integers(values: &[u64]) -> CompressionCodec

Selects the best codec for a slice of u64 values.

Considers multiple codecs and picks the one with the best estimated compression ratio:

  • RunLength: Best for highly repetitive data (avg run length > 2)
  • DeltaBitPacked: Best for sorted/sequential integers
  • BitPacked: Best for small integers with limited range
Source

pub fn select_for_strings(values: &[&str]) -> CompressionCodec

Selects the best codec for a slice of strings.

Source

pub fn select_for_booleans(_values: &[bool]) -> CompressionCodec

Selects the best codec for boolean values.

Auto Trait Implementations§

Blanket Implementations§

Source§

impl<T> Any for T
where T: 'static + ?Sized,

Source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
Source§

impl<T> Borrow<T> for T
where T: ?Sized,

Source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
Source§

impl<T> BorrowMut<T> for T
where T: ?Sized,

Source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
Source§

impl<T> From<T> for T

Source§

fn from(t: T) -> T

Returns the argument unchanged.

Source§

impl<T, U> Into<U> for T
where U: From<T>,

Source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

Source§

impl<T> Pointable for T

Source§

const ALIGN: usize

The alignment of pointer.
Source§

type Init = T

The type for initializers.
Source§

unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
Source§

unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
Source§

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
Source§

unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
Source§

impl<T, U> TryFrom<U> for T
where U: Into<T>,

Source§

type Error = Infallible

The type returned in the event of a conversion error.
Source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
Source§

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

Source§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
Source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.