Struct ColumnMetadata 

pub struct ColumnMetadata { /* private fields */ }

Column metadata.

Implementations

impl ColumnMetadata

pub const fn new(reference: ColumnRef) -> ColumnMetadata

Creates column metadata.

pub fn with_type_label(self, type_label: ColumnTypeLabel) -> ColumnMetadata

Sets the type label.

pub fn with_default(self, default: ColumnDefault) -> ColumnMetadata

Sets the default label.

pub const fn with_nullability(self, nullability: Nullability) -> ColumnMetadata

Sets nullability metadata.

pub const fn with_ordinal(self, ordinal: ColumnOrdinal) -> ColumnMetadata

Sets the column ordinal.

pub const fn reference(&self) -> &ColumnRef

Returns the column reference.

pub const fn type_label(&self) -> Option<&ColumnTypeLabel>

Returns the type label.

pub const fn nullability(&self) -> Nullability

Returns nullability metadata.

Trait Implementations

impl Clone for ColumnMetadata

fn clone(&self) -> ColumnMetadata

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ColumnMetadata

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

Formats the value using the given formatter.

impl PartialEq for ColumnMetadata

fn eq(&self, other: &ColumnMetadata) -> 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 Eq for ColumnMetadata

impl StructuralPartialEq for ColumnMetadata