Hi,
I am not sure whether this is a MyFaces problem. I changed the annotations a
little bit. Then it works:
@Stateful
@Name("userservice")
@Interceptor(SeamInterceptor.class)
@Conversational(ifNotBegunOutcome="success")
I added the Conversational-Annotation and start a transation with the @BEGIN
Annotation before readAll. I end the transaction after the delete-Method with
@END:
|
|
| @Stateful
| @Name("userservice")
| @Interceptor(SeamInterceptor.class)
| @Conversational(ifNotBegunOutcome="success")
| public class UserServiceImpl implements UserService {
|
| @PersistenceContext (unitName="merlix")
| protected EntityManager em;
| private static final Logger log = Logger.getLogger(UserService.class);
|
| @DataModel
| private List <User> userlist;
| @DataModelSelectionIndex
| private int userIndex;
|
| @In(required=false)
| @Out(required=false)
| private User user;
|
| public UserServiceImpl() {
| super();
| log.debug("Constructor called");
| }
|
| private void setUser()
| {
| user = userlist.get(userIndex);
| log.info( userIndex + "=>" + user);
| }
|
| @Begin @End
| public String add() {
| em.persist (user);
| return "success";
| }
|
|
| public String update() {
| em.merge(user);
| return "success";
| }
|
|
| public String load() {
| //return (User)em.createQuery("from User where
uid='"+user.getUid()+"'").getSingleResult();
| user=em.find(User.class,user);
| return "success";
| }
|
| @End
| public String delete(){
| if (userlist==null) return "success";
| setUser();
| em.remove(user);
| userlist=null;
| return "success";
| }
|
| public String refresh() {
| em.refresh(user);
| return "success";
| }
|
|
| @SuppressWarnings("unchecked")
| @Begin
| public String readAll() {
| userlist=em.createQuery("from User").getResultList();
| return "success";
| }
|
| @Destroy @Remove
| public void destroy() {
| log.info("destroyed");
| }
| }
|
But normally I would not use long running transactions in this case. Do I have
to? Or is there a better way?
What happens if I start the transaction before readAll() and the don`t delte
anything but leave the page by clicking on link in my menu. Will the
transaction be closed automatically?
Bye
Claus
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