```
@Inherited
@InterceptorBinding
@Retention(RUNTIME)
@Target({METHOD,TYPE})
public @interface JpaTransactional
```
Runs a method as a unit of work in a JPA transaction of the system database, the same way JpaTransactionRunner.inTransaction(JpaWork) does: the transaction of the calling thread is taken part in if there is one and a new one is opened otherwise, it is committed when the method returns and rolled back when the method throws.
Within such a method, an injected EntityManager is the entity manager of that transaction, so a DAO needs nothing but the entity manager to work with. Outside a transaction, using an injected entity manager fails.
Return DTOs, never entities or lazy proxies. Entities are detached once the transaction is over and an unresolved lazy association then fails on access.
On a class, every method of that class is run as a unit of work. Only calls that go through the bean's CDI reference are covered: a method invoked on this from within the same bean is not.

Since:

8.5.6

Author:

Norman Lorenz

Annotation Type JpaTransactional