Struct async_txn::AsyncTm

pub struct AsyncTm<K, V, C, P, S> { /* private fields */ }

A multi-writer multi-reader MVCC, ACID, Serializable Snapshot Isolation transaction manager.

Implementations

impl<K, V, C, P, S> AsyncTm<K, V, C, P, S>

where C: Cm<Key = K>, P: Pwm<Key = K, Value = V>, S: AsyncSpawner,

pub async fn write_with_blocking_cm_and_pwm( &self, pending_manager_opts: P::Options, conflict_manager_opts: Option<C::Options> ) -> Result<AsyncWtm<K, V, C, P, S>, TransactionError<C::Error, P::Error>>

Create a new writable transaction with the default pending writes manager to store the pending writes.

impl<K, V, C, P, S> AsyncTm<K, V, C, P, S>

where C: AsyncCm<Key = K>, P: AsyncPwm<Key = K, Value = V>, S: AsyncSpawner,

pub async fn write( &self, pending_manager_opts: P::Options, conflict_manager_opts: Option<C::Options> ) -> Result<AsyncWtm<K, V, C, P, S>, TransactionError<C::Error, P::Error>>

Create a new writable transaction with the default pending writes manager to store the pending writes.

impl<K, V, C, P, S> AsyncTm<K, V, C, P, S>

where S: AsyncSpawner,

pub async fn new(name: &str, current_version: u64) -> Self

Create a new transaction manager with the given name (just for logging or debugging, use your crate name is enough) and the current version (provided by the database).

pub async fn version(&self) -> u64

Returns the current read version of the database.

pub async fn close(&self)

Close the transaction manager.

impl<K, V, C, P, S> AsyncTm<K, V, C, P, S>

where S: AsyncSpawner,

pub fn discard_hint(&self) -> u64

Returns a timestamp which hints that any versions under this timestamp can be discard. This is useful when users want to implement compaction/merge functionality.

pub async fn read(&self) -> AsyncRtm<K, V, C, P, S>

Create a new writable transaction.

Trait Implementations

impl<K, V, C, P, S> Clone for AsyncTm<K, V, C, P, S>

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.