Trait mz_persist_types::codec_impls::SimpleColumnarData

pub trait SimpleColumnarData {
    type ArrowBuilder: ArrayBuilder + Default;
    type ArrowColumn: Array + Clone + 'static;

    // Required methods
    fn goodbytes(builder: &Self::ArrowBuilder) -> usize;
    fn push(&self, builder: &mut Self::ArrowBuilder);
    fn push_null(builder: &mut Self::ArrowBuilder);
    fn read(&mut self, idx: usize, column: &Self::ArrowColumn);
}

Simple type of data that can be columnar encoded.

Required Associated Types

type ArrowBuilder: ArrayBuilder + Default

Type of arrow builder that we encode data into.

type ArrowColumn: Array + Clone + 'static

Type of arrow array the we decode data from.

Required Methods

fn goodbytes(builder: &Self::ArrowBuilder) -> usize

The number of actual data bytes this item represents.

fn push(&self, builder: &mut Self::ArrowBuilder)

Encode self into builder.

fn push_null(builder: &mut Self::ArrowBuilder)

Encode a null value into builder.

fn read(&mut self, idx: usize, column: &Self::ArrowColumn)

Decode an instance of self from column.

Object Safety

This trait is not object safe.

Implementations on Foreign Types

impl SimpleColumnarData for Bytes

type ArrowBuilder = GenericByteBuilder<GenericBinaryType<i32>>

type ArrowColumn = GenericByteArray<GenericBinaryType<i32>>

fn goodbytes(builder: &Self::ArrowBuilder) -> usize

fn push(&self, builder: &mut Self::ArrowBuilder)

fn push_null(builder: &mut Self::ArrowBuilder)

fn read(&mut self, idx: usize, column: &Self::ArrowColumn)

impl SimpleColumnarData for String

type ArrowBuilder = GenericByteBuilder<GenericStringType<i32>>

type ArrowColumn = GenericByteArray<GenericStringType<i32>>

fn goodbytes(builder: &Self::ArrowBuilder) -> usize

fn push(&self, builder: &mut Self::ArrowBuilder)

fn push_null(builder: &mut Self::ArrowBuilder)

fn read(&mut self, idx: usize, column: &Self::ArrowColumn)

impl SimpleColumnarData for Vec<u8>

type ArrowBuilder = GenericByteBuilder<GenericBinaryType<i32>>

type ArrowColumn = GenericByteArray<GenericBinaryType<i32>>

fn goodbytes(builder: &Self::ArrowBuilder) -> usize

fn push(&self, builder: &mut Self::ArrowBuilder)

fn push_null(builder: &mut Self::ArrowBuilder)

fn read(&mut self, idx: usize, column: &Self::ArrowColumn)

Implementors

impl SimpleColumnarData for ShardId

type ArrowBuilder = GenericByteBuilder<GenericStringType<i32>>

type ArrowColumn = GenericByteArray<GenericStringType<i32>>