Transaction annotation in SpringBoot does not work - spring-boot

Question

The Transaction annotation does not seem to work for me.
This code works (manually opening a transaction):
#Repository
public class PeoplePropertiesDaoHibernate implements PeoplePropertiesDao {
private static final Logger LOGGER = LoggerFactory.getLogger(PeoplePropertiesDaoHibernate.class);
private String lastQuery;
private EntityManager em;
#PersistenceContext(unitName="timesheetPersistence")
public void setEntityManager(EntityManager em) {
this.em = em;
}
#Qualifier("entityManager")
#Autowired
EntityManagerFactory emf;
#Override
public EntityManager getPersistenceContext()
{
return em;
}
public boolean isHoursManager(String peopleId) {
EntityManager em = emf.createEntityManager();
EntityTransaction tx = em.getTransaction();
String query =
"select count(*) " +
"from supervisor " +
"where people_id = :manager ";
tx.begin();
Session s = (Session) em.getDelegate();
Integer count = 0;
count = (Integer) s.createSQLQuery(query)
.setParameter("manager", peopleId)
.uniqueResult();
tx.commit();
em.close();
LOGGER.debug("Count = " + count + " return " + (count > 0));
return count > 0;
}
}
This code also works (type = PersistenceContextType.EXTENDED:
#Repository
public class PeoplePropertiesDaoHibernate implements PeoplePropertiesDao {
private static final Logger LOGGER = LoggerFactory.getLogger(PeoplePropertiesDaoHibernate.class);
private String lastQuery;
private EntityManager em;
#PersistenceContext(unitName="timesheetPersistence", type = PersistenceContextType.EXTENDED)
public void setEntityManager(EntityManager em) {
this.em = em;
}
#Override
public EntityManager getPersistenceContext()
{
return em;
}
public boolean isHoursManager(String peopleId) {
String query =
"select count(*) " +
"from supervisor " +
"where people_id = :manager ";
Session s = (Session) em.getDelegate();
Integer count = 0;
count = (Integer) s.createSQLQuery(query)
.setParameter("manager", peopleId)
.uniqueResult();
LOGGER.debug("Count = " + count + " return " + (count > 0));
return count > 0;
}
This code with #Transactional gives the error: Session/EntityManager is closed; nested exception is java.lang.IllegalStateException: Session/EntityManager is closed
#Transactional
#Repository
public class PeoplePropertiesDaoHibernate implements PeoplePropertiesDao {
private static final Logger LOGGER = LoggerFactory.getLogger(PeoplePropertiesDaoHibernate.class);
private String lastQuery;
private EntityManager em;
#PersistenceContext(unitName="timesheetPersistence")
public void setEntityManager(EntityManager em) {
this.em = em;
}
#Override
public EntityManager getPersistenceContext()
{
return em;
}
public boolean isHoursManager(String peopleId) {
String query =
"select count(*) " +
"from supervisor " +
"where people_id = :manager ";
Session s = (Session) em.getDelegate();
Integer count = 0;
count = (Integer) s.createSQLQuery(query)
.setParameter("manager", peopleId)
.uniqueResult();
LOGGER.debug("Count = " + count + " return " + (count > 0));
return count > 0;
}
What is the cause of this?
EDIT: THIS WORKS!! Why would the session from the getDelegate() not use the transaction?
String query =
"select count(*) " +
"from Supervisor " +
"where people_id = :manager ";
Session s = (Session) em.getDelegate();
Integer count = 0;
count = ((Long)em.createQuery(query)
.setParameter("manager", peopleId)
.getSingleResult()).intValue()
;
LOGGER.debug("Count = " + count + " return " + (count > 0));
return count > 0;