Struct CompressionParams 

pub struct CompressionParams {
    pub columns: HashMap<String, CompressionFieldParams>,
    pub types: HashMap<String, CompressionFieldParams>,
}

Compression parameter configuration

Fields

columns: HashMap<String, CompressionFieldParams>

Column-level parameters: column name/pattern -> parameters

types: HashMap<String, CompressionFieldParams>

Type-level parameters: data type name -> parameters

Implementations

impl CompressionParams

pub fn new() -> Self

Create empty compression parameters

pub fn get_field_params( &self, field_name: &str, data_type: &DataType, ) -> CompressionFieldParams

Get effective parameters for a field (merging type params and column params)

Trait Implementations

impl Clone for CompressionParams

fn clone(&self) -> CompressionParams

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CompressionParams

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

Formats the value using the given formatter.

impl Default for CompressionParams

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for CompressionParams

fn eq(&self, other: &CompressionParams) -> 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 StructuralPartialEq for CompressionParams