Struct UniqueArc 

pub struct UniqueArc<T> { /* private fields */ }

A smart pointer which has exactly one strong reference to the inner type, but may have several weak references.

This type is intentionally !Clone so that we know for a fact that it can be safely unpacked.

Implementations

impl UniqueArc<Transaction>

pub async fn commit(self) -> Result<(), CryptoKeystoreError>

Persists all the operations in the database.

pub async fn rollback(self) -> CryptoKeystoreResult<()>

Roll back this transaction in the database.

There are two differences between manual rollback and implicit:

• manual rollback clears the database’s weak transaction ref
• manual rollback permits propagation of db-level errors

impl<T> UniqueArc<T>

pub async fn into_inner(this: Self) -> T

Unpack this UniqueArc, returning the inner value.

This waits for any in-flight UniqueWeak::upgrade / UniqueWeak::upgrade_sync guard to drop before unpacking, so that the sole remaining strong reference is the one held by this UniqueArc.

pub fn downgrade(this: &Self) -> UniqueWeak<T>

Produce a weak reference to this item

Trait Implementations

impl<T: Debug> Debug for UniqueArc<T>

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

Formats the value using the given formatter.

impl<T> Deref for UniqueArc<T>

where Arc<T>: Deref,

type Target = <Arc<T> as Deref>::Target

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<T> FetchFromDatabase for UniqueArc<T>

where T: FetchFromDatabase,

fn get<'life0, 'life1, 'async_trait, E>( &'life0 self, id: &'life1 E::PrimaryKey, ) -> Pin<Box<dyn Future<Output = CryptoKeystoreResult<Option<Arc<E>>>> + Send + 'async_trait>>

where E: 'static + Entity + Clone + Send + Sync + 'async_trait, Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Get an instance of E from the database by its primary key.

fn count<'life0, 'async_trait, E>( &'life0 self, ) -> Pin<Box<dyn Future<Output = CryptoKeystoreResult<u32>> + Send + 'async_trait>>

where E: 'static + Entity + Clone + Send + Sync + 'async_trait, Self: 'async_trait, 'life0: 'async_trait,

Count the number of Es in the database.

fn load_all<'life0, 'async_trait, E>( &'life0 self, ) -> Pin<Box<dyn Future<Output = CryptoKeystoreResult<Vec<Arc<E>>>> + Send + 'async_trait>>

where E: 'static + Entity + Clone + Send + Sync + 'async_trait, Self: 'async_trait, 'life0: 'async_trait,

Load all Es from the database.

fn get_borrowed<'life0, 'life1, 'async_trait, E>( &'life0 self, id: <E as BorrowPrimaryKey>::BorrowedPrimaryKey<'life1>, ) -> Pin<Box<dyn Future<Output = CryptoKeystoreResult<Option<Arc<E>>>> + Send + 'async_trait>>

where E: 'static + EntityGetBorrowed + Clone + Send + Sync + 'async_trait, Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Get an instance of E from the database by the borrowed form of its primary key.

fn get_unique<'a, 'life0, 'async_trait, U>( &'life0 self, ) -> Pin<Box<dyn Future<Output = CryptoKeystoreResult<Option<Arc<U>>>> + Send + 'async_trait>>

where U: 'static + UniqueEntityExt + Entity + Clone + Send + Sync + 'async_trait, Self: 'async_trait, 'a: 'async_trait, 'life0: 'async_trait,

Get the requested unique entity from the database.

fn exists<'a, 'life0, 'async_trait, U>( &'life0 self, ) -> Pin<Box<dyn Future<Output = CryptoKeystoreResult<bool>> + Send + 'async_trait>>

where U: 'static + UniqueEntityExt + Entity + Clone + Send + Sync + 'async_trait, Self: 'async_trait, 'a: 'async_trait, 'life0: 'async_trait,

Determine whether a unique entity is present in the database.

fn search<'life0, 'life1, 'async_trait, E, SearchKey>( &'life0 self, search_key: &'life1 SearchKey, ) -> Pin<Box<dyn Future<Output = CryptoKeystoreResult<Vec<Arc<E>>>> + Send + 'async_trait>>

where E: 'static + Entity + SearchableEntity<SearchKey> + Clone + Send + Sync + 'async_trait, SearchKey: Send + Sync + ?Sized + 'async_trait, Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Search for relevant instances of E given a search key.

impl<T> From<T> for UniqueArc<T>

fn from(value: T) -> Self

Converts to this type from the input type.