Struct mz_repr::row::encoding::NullableProtoDatumToPersistNoStats

pub struct NullableProtoDatumToPersistNoStats;

An implementation of DatumToPersist that maps to/from all nullable Datum types using the ProtoDatum representation and doesn’t collect any stats.

Note: This and the other ProtoDatumToPersist* exist as temporary placeholders while we work to nail down the best Arrow representations for Datum.

Trait Implementations

impl DatumToPersist for NullableProtoDatumToPersistNoStats

type Data = Option<OpaqueData>

The persist columnar type we’re mapping to/from.

type Cfg = ()

Any information, in addition to the type of Self::Data, that is necessary to derive the columnar schema of this type. E.g. for ScalarType::Record, this will be the schema of the record.

const CFG: Self::Cfg = ()

const STATS_FN: StatsFn = StatsFn::Default

Which logic to use for computing aggregate stats.

fn encode(col: &mut <Self::Data as Data>::Mut, datum: Datum<'_>)

Encodes and pushes the given Datum into the persist column.

fn decode(val: <Self::Data as Data>::Ref<'_>, row: &mut RowPacker<'_>)

Decodes the data with the given reference into a Datum. This Datum is returned by pushing it in to the given RowPacker.

fn encode_default(col: &mut <Self::Data as Data>::Mut)

Pushes the default value for this type into the column.

impl Debug for NullableProtoDatumToPersistNoStats

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

Formats the value using the given formatter.