Struct Utf8Column 

pub struct Utf8Column;

A UTF-8 input element that yields Utf8View values.

Trait Implementations

impl InputElement for Utf8Column

const DENSE_SAFE: bool = true

Whether every dense decode and access path tolerates rows that are null in the input.

const DECODE_INFALLIBLE: bool = true

Whether decode is infallible for legal input data.

type Column = Utf8Values

The decoded column representation supporting O(1) row access.

type Constant = Utf8Values

The decoded representation of one non-null batch-constant input.

type View<'a> = Utf8ValuesView<'a>

The row-loop view of a decoded column.

type Elem<'a> = Utf8View<'a>

The borrowed element value handed to a row closure.

fn validate(dtype: &DType) -> VortexResult<()>

Validate that dtype is an acceptable input column dtype for this element type.

fn decode(array: ArrayRef, ctx: &mut ExecutionCtx) -> VortexResult<Self::Column>

Decode array into its column representation.

fn decode_constant( array: ArrayRef, _ctx: &mut ExecutionCtx, ) -> VortexResult<Self::Constant>

Decode one non-null batch-constant input.

fn can_decode_null_tolerant(_array: &ArrayRef) -> VortexResult<bool>

Whether decode_null_tolerant can decode this array.

fn get(column: &Self::Column, index: usize) -> Self::Elem<'_>

Read one row without repeating batch-constant work from decode.

fn get_constant(constant: &Self::Constant) -> Self::Elem<'_>

Read the element stored in a decoded batch constant.

fn view(column: &Self::Column) -> Self::View<'_>

Borrow the representation used inside the row loop.

fn get_from_view<'a>(view: &Self::View<'a>, index: usize) -> Self::Elem<'a>

where Self: 'a,

Read one row from a View.

unsafe fn get_from_view_unchecked<'a>( view: &Self::View<'a>, index: usize, ) -> Self::Elem<'a>

where Self: 'a,

Read one row without checking that index is in bounds.

fn decode_null_tolerant( array: ArrayRef, ctx: &mut ExecutionCtx, ) -> VortexResult<Option<Self::Column>>

Decode array without assuming every row is valid, or return Ok(None) when this element cannot decode this particular array.