Struct TodoSchema

pub struct TodoSchema<T>(PhantomData<T>);

A placeholder for a Codec impl that hasn’t yet gotten a real Schema2.

Tuple Fields

0: PhantomData<T>

Trait Implementations

impl<T: Debug> Debug for TodoSchema<T>

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

Formats the value using the given formatter.

impl<T> Default for TodoSchema<T>

fn default() -> Self

Returns the “default value” for a type.

impl<T> PartialEq for TodoSchema<T>

fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<T: Debug + Send + Sync> Schema2<T> for TodoSchema<T>

type ArrowColumn = StructArray

The type of column we decode from, and encoder will finish into.

type Statistics = NoneStats

Statistics we collect for a schema of this type.

type Decoder = TodoColumnarDecoder<T>

Type that is able to decode values of T from Self::ArrowColumn.

type Encoder = TodoColumnarEncoder<T>

Type that is able to encoder values of T.

fn decoder(&self, _col: Self::ArrowColumn) -> Result<Self::Decoder, Error>

Returns a type that is able to decode instances of T from the provider column.

fn encoder(&self) -> Result<Self::Encoder, Error>

Returns a type that can encode values of T.

fn decoder_any(&self, col: &dyn Array) -> Result<Self::Decoder, Error>

Returns a type that is able to decode instances of T from a type erased arrow::array::Array, erroring if the provided array is not Self::ArrowColumn.