Struct Column 

pub struct Column { /* private fields */ }

One column of a table.

Implementations

impl Column

pub fn new(name: impl Into<String>, column_type: ColumnType) -> Self

A column that may be missing or #.

pub fn required(self) -> Self

Marks the column as one every row must have.

A required column is what i64 means and an optional one is what Option<i64> means: the cluster rejects a row that leaves a required column out.

pub fn key(self) -> Self

Makes this an ascending key column.

Key columns must be the first columns of the schema, in order: the cluster refuses a schema whose keys are not a prefix with Key columns must form a prefix of schema.

pub fn sorted(self, order: SortOrder) -> Self

Makes this a key column, sorted the given way.

See SortOrder::Descending before reaching for anything but ascending.

pub fn name(&self) -> &str

The column’s name.

pub fn column_type(&self) -> ColumnType

The column’s type.

pub fn is_required(&self) -> bool

Whether every row must carry it.

pub fn sort_order(&self) -> Option<SortOrder>

Its sort order, if it is a key column.

Trait Implementations

impl Clone for Column

fn clone(&self) -> Column

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Column

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

Formats the value using the given formatter.

impl Eq for Column

impl PartialEq for Column

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Column