Struct ColumnBatch 

pub struct ColumnBatch {
    pub schema: Arc<Schema>,
    pub columns: Vec<ColumnVector>,
    pub len: usize,
}

Fields

schema: Arc<Schema>

columns: Vec<ColumnVector>

len: usize

Implementations

impl ColumnBatch

pub fn new(schema: Arc<Schema>, columns: Vec<ColumnVector>) -> ColumnBatch

pub fn empty(schema: Arc<Schema>) -> ColumnBatch

pub fn len(&self) -> usize

pub fn is_empty(&self) -> bool

pub fn value(&self, row: usize, column: usize) -> ValueRef<'_>

Fetch a single cell. Used by predicates that aren’t SIMD-able.

pub fn take(&self, indices: &[usize]) -> ColumnBatch

Build a new batch keeping only the rows at indices.

pub fn project(&self, indices: &[usize]) -> ColumnBatch

Project a subset of columns (by index) into a narrower batch.

Trait Implementations

impl Clone for ColumnBatch

fn clone(&self) -> ColumnBatch

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ColumnBatch

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

Formats the value using the given formatter.