Struct mz_persist_types::columnar::DataType

pub struct DataType {
    pub optional: bool,
    pub format: ColumnFormat,
}

A description of a type understood by persist.

There is a 1:1 mapping between implementors of Data and variants of the DataType enum. The parallel hierarchy exists so that Data can be ergonomic while DataType is object-safe and has exhaustiveness checking. A Data impl can be mapped to its corresponding DataType via ColumnCfg::as_type and back via DataType::data_fn.

Fields

optional: bool

Whether this type is optional.

format: ColumnFormat

The in-memory rust type of a column of data.

Implementations

impl DataType

fn data_fn<R, F: DataFn<R>>(&self, logic: F) -> R

Trait Implementations

impl Clone for DataType

fn clone(&self) -> DataType

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for DataType

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

Formats the value using the given formatter.

impl PartialEq for DataType

fn eq(&self, other: &DataType) -> 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 StructuralPartialEq for DataType