Enum AggregateKey 

pub enum AggregateKey {
    Direct(ColumnName),
    Through(Through),
}

How an aggregate’s related rows tie back to the parent — a direct FK on the aggregated table, or a junction table. (Joins carry their key inside JoinKind; aggregates are inherently over-many, so belongs_to has no aggregate counterpart.)

Variants

Direct(ColumnName)

Through(Through)

Trait Implementations

impl Clone for AggregateKey

fn clone(&self) -> AggregateKey

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AggregateKey

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for AggregateKey

fn deserialize<__D>( __deserializer: __D, ) -> Result<AggregateKey, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Hash for AggregateKey

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Serialize for AggregateKey

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.