Hi
I've got an EJB:
@Stateless
@TransactionAttribute(TransactionAttributeType.SUPPORTS)
public class AirportDaoBean implements AirportDaoLocal, AirportDaoRemote {
@PersistenceContext
private EntityManager manager;
@Override
public void createAirport(Airport airport) {
manager.persist(airport);
}
@Override
public Airport getAirportById(int id) {
return manager.find(Airport.class, id);
}
@Override
public List<Airport> getAll() {
return manager.createQuery("from Airport order by city.country.name").getResultList();
}
}
As you can see I configured it with SUPPORTS transaction attribute, so when there is a transaction all methods in my bean will use it, when there is no transaction context then bean wouldn't begin a new one. So my question is: why i get the exception:
Caused by: javax.persistence.TransactionRequiredException: EntityManager must be access within a transaction
at org.jboss.ejb3.entity.ManagedEntityManagerFactory.verifyInTx(ManagedEntityManagerFactory.java:150)
at org.jboss.ejb3.entity.TransactionScopedEntityManager.persist(TransactionScopedEntityManager.java:174)
at master.airport.logic.impl.AirportDaoBean.createAirport(AirportDaoBean.java:24)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:112)
at org.jboss.ejb3.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:166)
at org.jboss.ejb3.interceptor.EJB3InterceptorsInterceptor.invoke(EJB3InterceptorsInterceptor.java:63)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.entity.TransactionScopedEntityManagerInterceptor.invoke(TransactionScopedEntityManagerIntercepto
Regards
Adam
