[jboss-user] [EJB 3.0] - Re: SerializationException when attempting to activate a sta

[grdzeli_kaci]

hi redyz,

i did it,
the problem is that in statefull session bean i had define Query class object and this class is not a serializable.

you must define this class as transient or use it only method scope.....
my programm example 





  | @Stateful
  | @Remote(CountFasade.class)
  | public class CountFasadeBean implements CountFasade {
  | 
  |         @PersistenceContext(unitName = "srvProvOracle")
  | 	private EntityManager oracleManager;
  | 
  | 	Query _query = null;
  | 
  | 	public void addCount() throws Exception {
  | 		try {
  | 			_query = oracleManager.createNativeQuery("some query");
  | 		} catch (Exception e) {
  | 			e.printStackTrace();
  | 			throw e;
  | 		}
  | 	}
  | }
  | 
  | 


must be like this :


  | @Stateful
  | @Remote(CountFasade.class)
  | public class CountFasadeBean implements CountFasade {
  | 
  |         @PersistenceContext(unitName = "srvProvOracle")
  | 	private EntityManager oracleManager;
  | 
  |         @Transient
  | 	Query _query = null;
  | 
  | 	public void addCount() throws Exception {
  | 		try {
  | 			_query = oracleManager.createNativeQuery("some query");
  | 		} catch (Exception e) {
  | 			e.printStackTrace();
  | 			throw e;
  | 		}
  | 	}
  | }
  | 

or like this :


  | @Stateful
  | @Remote(CountFasade.class)
  | public class CountFasadeBean implements CountFasade {
  | 
  |         @PersistenceContext(unitName = "srvProvOracle")
  | 	private EntityManager oracleManager;
  | 
  | 	public void addCount() throws Exception {
  | 		try {
  | 			Query _query =  oracleManager.createNativeQuery("some query");
  | 		} catch (Exception e) {
  | 			e.printStackTrace();
  | 			throw e;
  | 		}
  | 	}
  | }
  | 
  | 


good luck

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