trait Transactions extends AnyRef
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- abstract def transaction[T](f: (Client) => Future[T]): Future[T]
Execute
fin a transaction.Execute
fin a transaction.If
fthrows an exception, the transaction is rolled back. Otherwise, the transaction is committed.client.transaction[Foo] { c => for { r0 <- c.query(q0) r1 <- c.query(q1) response: Foo <- buildResponse(r1, r2) } yield response }- Note
we use a ServiceFactory that returns the same Service repeatedly to the client. This is to assure that a new MySQL connection (i.e. Service) from the connection pool (i.e., ServiceFactory) will be used for each new transaction. Only upon completion of the transaction is the connection returned to the pool for re-use.
Example: - abstract def transactionWithIsolation[T](isolationLevel: IsolationLevel)(f: (Client) => Future[T]): Future[T]
Execute
fin a transaction using the given Isolation Level for this transaction only.Execute
fin a transaction using the given Isolation Level for this transaction only. This Isolation Level overrides the session and global database settings for the transaction.If
fthrows an exception, the transaction is rolled back. Otherwise, the transaction is committed.client.transaction[Foo](IsolationLevel.RepeatableRead) { c => for { r0 <- c.query(q0) r1 <- c.query(q1) response: Foo <- buildResponse(r1, r2) } yield response }- Note
we use a ServiceFactory that returns the same Service repeatedly to the client. This is to assure that a new MySQL connection (i.e. Service) from the connection pool (i.e., ServiceFactory) will be used for each new transaction. Only upon completion of the transaction is the connection returned to the pool for re-use.
Example:
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