Struct mz_persist_types::dyn_struct::DynStruct

pub struct DynStruct;

A “dynamic” columnar struct.

See DynStructCfg.

Trait Implementations

impl ColumnCfg<DynStruct> for DynStructCfg

fn as_type(&self) -> DataType

Returns the DataType for an instance of T with this configuration.

impl ColumnGet<DynStruct> for DynStructCol

fn get<'a>(&'a self, idx: usize) -> DynStructRef<'a>

Retrieves the value at index.

impl ColumnPush<DynStruct> for DynStructMut

fn push<'a>(&mut self, val: DynStructRef<'a>)

Pushes a new value into this column.

impl ColumnStats<DynStruct> for StructStats

fn lower<'a>(&'a self) -> Option<<DynStruct as Data>::Ref<'a>>

An inclusive lower bound on the data contained in the column, if known.

fn upper<'a>(&'a self) -> Option<<DynStruct as Data>::Ref<'a>>

Same as Self::lower but an (also inclusive) upper bound.

fn none_count(&self) -> usize

The number of Nones if this column is optional or 0 if it isn’t.

impl Data for DynStruct

type Cfg = DynStructCfg

If necessary, whatever information beyond the type of Self needed to produce a columnar schema for this type.

type Ref<'a> = DynStructRef<'a>

The associated reference type of Self used for reads and writes on columns of this type.

type Col = DynStructCol

The shared reference of columns of this type of data.

type Mut = DynStructMut

The exclusive builder of columns of this type of data.

type Stats = StructStats

The statistics type of columns of this type of data.

impl Debug for DynStruct

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

Formats the value using the given formatter.