Struct EnumTypeMapping 

pub struct EnumTypeMapping;

Available on crate feature i-implement-a-third-party-backend-and-opt-into-breaking-changes only.

Map enum variants to matching database enum variants

Trait Implementations

impl Clone for EnumTypeMapping

fn clone(&self) -> EnumTypeMapping

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for EnumTypeMapping

impl Debug for EnumTypeMapping

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

Formats the value using the given formatter.

impl EnumMapping<Mysql> for EnumTypeMapping

Available on crate feature mysql_backend only.

fn map_to_database_value<'b>( output: &mut Output<'b, '_, Mysql>, variant: &'static EnumVariant, ) -> Result

Map an enum variant to the database representation

fn map_from_database_value( raw: <Mysql as Backend>::RawValue<'_>, type_name: &'static str, variants: &'static [EnumVariant], ) -> Result<usize>

Construct an enum variant from the database representation

impl EnumMapping<Pg> for EnumTypeMapping

Available on crate feature postgres_backend only.

fn map_to_database_value<'b>( output: &mut Output<'b, '_, Pg>, variant: &'static EnumVariant, ) -> Result

Map an enum variant to the database representation

fn map_from_database_value( raw: PgValue<'_>, type_name: &'static str, variants: &'static [EnumVariant], ) -> Result<usize>

Construct an enum variant from the database representation