org.uqbarproject.jpa.java8.extras.transaction

Interface TransactionalOps

All Superinterfaces:

WithEntityManager

All Known Implementing Classes:

AbstractPersistenceTest

public interface TransactionalOps
extends WithEntityManager

Author:

flbulgarelli, gprieto

Method Summary

Modifier and Type	Method and Description
default javax.persistence.EntityTransaction	beginTransaction() Begins a transaction if there is no active current transaction yet.
default void	commitTransaction()
default javax.persistence.EntityTransaction	getTransaction()
default void	rollbackTransaction()
default void	withTransaction(Runnable action)
default <A> A	withTransaction(java.util.function.Supplier<A> action) Runs an action within a transaction, commiting it if action succeeds, or rollbacking it otherwise

Methods inherited from interface org.uqbarproject.jpa.java8.extras.WithEntityManager

entityManager

Method Detail

withTransaction

default void withTransaction(Runnable action)

withTransaction

default <A> A withTransaction(java.util.function.Supplier<A> action)

Runs an action within a transaction, commiting it if action succeeds, or rollbacking it otherwise

Parameters:

action - the action to execute

Returns:

the suppliers result

Throws:

RuntimeException - if actions fails with a RuntimeException

getTransaction

default javax.persistence.EntityTransaction getTransaction()

beginTransaction

default javax.persistence.EntityTransaction beginTransaction()

Begins a transaction if there is no active current transaction yet. Unlike EntityTransaction.begin(), this method never fails with IllegalStateException

Returns:

the current active transaction

See Also:

EntityTransaction.begin()

commitTransaction

default void commitTransaction()

rollbackTransaction

default void rollbackTransaction()