BorrowPrimaryKey

core_crypto_keystore::traits

Trait BorrowPrimaryKey 

Source 
pub trait BorrowPrimaryKey: Entity {
    type BorrowedPrimaryKey: ?Sized + ToOwned<Owned = Self::PrimaryKey>;

    // Required methods
    fn borrow_primary_key(&self) -> &Self::BorrowedPrimaryKey;
    fn get_borrowed<'life0, 'life1, 'async_trait, Q>(
        conn: &'life0 mut Self::ConnectionType,
        key: &'life1 Q,
    ) -> Pin<Box<dyn Future<Output = CryptoKeystoreResult<Option<Self>>> + Send + 'async_trait>>
       where Self::PrimaryKey: Borrow<Q>,
             Q: KeyType + 'async_trait,
             Self: 'async_trait,
             'life0: 'async_trait,
             'life1: 'async_trait;
}
Expand description

An extension trait which should be implemented for all entities whose primary key has a distinct borrowed form.

i.e. String, Vec<u8>, etc.

Required Associated Types§

Source

type BorrowedPrimaryKey: ?Sized + ToOwned<Owned = Self::PrimaryKey>

Required Methods§

Source

fn borrow_primary_key(&self) -> &Self::BorrowedPrimaryKey

Borrow this entity’s primary key without copying any data.

This borrowed key has a lifetime tied to that of this entity.

Source

fn get_borrowed<'life0, 'life1, 'async_trait, Q>( conn: &'life0 mut Self::ConnectionType, key: &'life1 Q, ) -> Pin<Box<dyn Future<Output = CryptoKeystoreResult<Option<Self>>> + Send + 'async_trait>>
where Self::PrimaryKey: Borrow<Q>, Q: KeyType + 'async_trait, Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Get an entity by a borrowed form of its primary key.

The type signature here is somewhat complicated, but it breaks down simply: if our primary key is something like Vec<u8>, we want to be able to use this method even if what we have on hand is &[u8].

Dyn Compatibility§

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors§