Trait diesel::connection::TransactionManager [] [src]

pub trait TransactionManager<Conn: Connection> {
    fn begin_transaction(&self, conn: &Conn) -> QueryResult<()>;
    fn rollback_transaction(&self, conn: &Conn) -> QueryResult<()>;
    fn commit_transaction(&self, conn: &Conn) -> QueryResult<()>;
    fn get_transaction_depth(&self) -> u32;
}

Manages the internal transaction state for a connection. You should not interface with this trait unless you are implementing a new connection adapter. You should use [Connection::transaction][transaction], [Connection::test_transaction][test_transaction], or [Connection::begin_test_transaction][begin_test_transaction] instead.

Required Methods

Begin a new transaction. If the transaction depth is greater than 0, this should create a savepoint instead. This function is expected to increment the transaction depth by 1.

Rollback the inner-most transcation. If the transaction depth is greater than 1, this should rollback to the most recent savepoint. This function is expected to decrement the transaction depth by 1.

Commit the inner-most transcation. If the transaction depth is greater than 1, this should release the most recent savepoint. This function is expected to decrement the transaction depth by 1.

Fetch the current transaction depth. Used to ensure that begin_test_transaction is not called when already inside of a transaction.

Implementors