Trait 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.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

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>>