The usage case of the EM is, that I call a PersistenceService.getEntityManager() method in every method of my SLSB's, the SLSBs all have the "Required" attribute set for TXs, so every time I call the getEM() method, there should be an already running JTA TX.
This is the code:
logger.log(Level.FINEST,
"creating a fresh, clean EntityManager from
JNDI EMF.");
// EntityManagerFactory emf = OpenJPAPersistence
// .createEntityManagerFactory(EMF_JNDI_LOCATION, (Context)
null);
final EntityManagerFactory emf = getEMF();
final BrokerFactory bf =
OpenJPAPersistence.toBrokerFactory(emf);
final Broker b = bf.newBroker(bf.getConfiguration()
.getConnectionUserName(), bf.getConfiguration()
.getConnectionPassword(), true, // the broker
is part of a JTA
managed tx
bf.getConfiguration().getConnectionRetainModeConstant(), true); //
look for an existing Broker on the tx
// do some JPA configuration setup. Logic stolen from
// EntityManagerFactoryImpl.
b.setAutoDetach(AutoDetach.DETACH_CLOSE, true);
b.setAutoDetach(AutoDetach.DETACH_ROLLBACK, true);
b.setDetachedNew(false);
return OpenJPAPersistence.toEntityManager(b);
And here you have the persistence.xml:
<persistence-unit name="lbsims" transaction-type="JTA">
<provider>
org.apache.openjpa.persistence.PersistenceProviderImpl
</provider>
<jta-data-source>jdbc_lbsims</jta-data-source>
<properties>
<property name="openjpa.ConnectionFactoryMode"
value="managed" />
<property name="openjpa.ManagedRuntime"
value="jndi(TransactionManagerName=java:comp/UserTransaction)" />
<property name="openjpa.DataCache" value="true"/>
<property name="openjpa.RemoteCommitProvider"
value="sjvm"/>
</properties>
</persistence-unit>
hth,
HANS
Am Mittwoch, den 28.03.2007, 11:54 -0700 schrieb Patrick Linskey:
> Also, how are you integrating it with the JTA transaction? Are you
> calling EM.joinTransaction(), or ensuring that the transaction is in
> progress before creating the EM, or something else?
>
> -Patrick
>
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