Struct MemoryColumnBackend 

pub struct MemoryColumnBackend { /* private fields */ }

Implementations

impl MemoryColumnBackend

pub fn new() -> Self

pub fn insert( &self, version: CommitVersion, columns: Vec<CompressedColumn>, ) -> Result<()>

pub fn scan( &self, version: CommitVersion, _column_indices: &[usize], ) -> Result<Vec<ColumnData>>

pub fn statistics(&self, column_index: usize) -> Option<ColumnStatistics>

pub fn partition_count(&self) -> usize

pub fn compressed_size(&self) -> usize

pub fn uncompressed_size(&self) -> usize

pub fn name(&self) -> &str

pub fn is_available(&self) -> bool

Trait Implementations

impl Clone for MemoryColumnBackend

fn clone(&self) -> MemoryColumnBackend

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl ColumnBackend for MemoryColumnBackend

fn insert( &self, version: CommitVersion, columns: Vec<CompressedColumn>, ) -> Result<()>

fn scan( &self, version: CommitVersion, column_indices: &[usize], ) -> Result<Vec<ColumnData>>

fn statistics(&self, column_index: usize) -> Option<ColumnStatistics>

fn partition_count(&self) -> usize

fn compressed_size(&self) -> usize

fn uncompressed_size(&self) -> usize

fn name(&self) -> &str

fn is_available(&self) -> bool

impl Default for MemoryColumnBackend

fn default() -> Self

Returns the “default value” for a type.