[jboss-user] [EJB 3.0] - tx attributte - supports doesn't work as expected

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 View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4050744#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...