Struct StructStructuralEncoder

pub struct StructStructuralEncoder { /* private fields */ }

A structural encoder for struct fields

The struct’s validity is added to the rep/def builder and the builder is cloned to all children.

Implementations

impl StructStructuralEncoder

pub fn new(children: Vec<Box<dyn FieldEncoder>>) -> Self

Trait Implementations

impl FieldEncoder for StructStructuralEncoder

fn maybe_encode( &mut self, array: ArrayRef, external_buffers: &mut OutOfLineBuffers, repdef: RepDefBuilder, row_number: u64, num_rows: u64, ) -> Result<Vec<EncodeTask>>

Buffer the data and, if there is enough data in the buffer to form a page, return an encoding task to encode the data.

fn flush( &mut self, external_buffers: &mut OutOfLineBuffers, ) -> Result<Vec<EncodeTask>>

Flush any remaining data from the buffers into encoding tasks

fn num_columns(&self) -> u32

The number of output columns this encoding will create

fn finish( &mut self, external_buffers: &mut OutOfLineBuffers, ) -> BoxFuture<'_, Result<Vec<EncodedColumn>>>

Finish encoding and return column metadata