5 Replies Latest reply on Jun 10, 2011 5:09 AM by Joshua Davis

    JBoss AS 6 and JPA. Feature or bug ??

    mark boletti Newbie

      Hi all,

      I have a Java EE 6 application packed in a .war file which is running on JBoss AS 6.0.0. The application contains EJB 3.1 which are packed into the Web application. In particular I have a method which insert some inserts using the EntityManager Api:

       

      @Stateless

      public class SaveKpi {

         

          @PersistenceContext(unitName = "userLocalDatabase")

          private EntityManager em;

         

          public void insert() {

              try {

       

                  MetricTemp temp = new MetricTemp();

                  temp.setContentObjectSid("22345");

                  temp.setObjectNm("test");

                  em.persist(temp);

              } catch (Exception e) {

                  // TODO Auto-generated catch block

                  e.printStackTrace();

              }

             

          }

      }

       

      However this results in a

       

      12:18:32,859 ERROR [STDERR] javax.persistence.TransactionRequiredException: EntityManager must be access within a transaction

      12:18:32,859 ERROR [STDERR]     at org.jboss.jpa.deployment.ManagedEntityManagerFactory.verifyInTx(ManagedEntityManagerFactory.java:157)

      12:18:32,859 ERROR [STDERR]     at org.jboss.jpa.deployment.PersistenceUnitDeployment.verifyInTx(PersistenceUnitDeployment.java:318)

      12:18:32,859 ERROR [STDERR]     at org.jboss.jpa.impl.tx.TransactionScopedEntityManager.verifyInTx(TransactionScopedEntityManager.java:105)

      12:18:32,859 ERROR [STDERR]     at org.jboss.jpa.impl.tx.TransactionScopedEntityManager.persist(TransactionScopedEntityManager.java:205)

      12:18:32,859 ERROR [STDERR]     at kpi.action.SaveKpi.insert(SaveKpi.java:66)

       

      When trying from within a Bean Managed Transaction, insert is performed successfully.

       

      @TransactionManagement(TransactionManagementType.BEAN)

      public class SaveKpi {

         

          @PersistenceContext(unitName = "userLocalDatabase")

          private EntityManager em;

         

          @Resource

          public UserTransaction utx;

         

          public void insert() {

              try {

                  utx.begin();

                  MetricTemp temp = new MetricTemp();

                  temp.setContentObjectSid("22345");

                  temp.setObjectNm("test");

                  em.persist(temp);

                  em.flush(); 

                  utx.commit();

              } catch (Exception e) {

                  // TODO Auto-generated catch block

                  e.printStackTrace();

              }

             

          }

      }

       

      Is it a bug or simply I cannot initiate an EJB CMT transaction from within the Web context....maybe I should pack the EJB in a .jar file and assemble all the application in a .ear package ?

      Thanks a lot in advance

      Mark