[jboss-user] [JBoss Seam] - Re: DataModel

[tony.herstell@gmail.com]

I had a similar problem.

My "Find" Session Sateful bean had a liost of users.

My Controller Stateful conversational fiddled with the store of users.

When my Controller  update the database; this was "behind" the back of the "Find" bean; so it didnt get reflected to the "find" beans "em" cache.

My solution is below (Gavin may have a better way to do it; but this works for me)

(need to inject the "Find" bean into the crud Controller bean naturally)


  | 	@End
  | 	@TransactionAttribute(TransactionAttributeType.REQUIRED)
  | 	public String update() {
  | 		log.info("> update");
  | 		user.setPassword(encryptionController.encrypt(user.getPassword()));
  | 		em.merge(user);
  | 		em.flush();
  | 		facesMessages.addFromResourceBundle("user_update_successful");
  | 
  | 		/*
  | 		 * We need to update this user in the list of users in the session scoped FindUserController
  | 		 */
  | 		if (findUserController != null) {
  | 			log.info("User sent to database => " + user);
  | 			findUserController.updateUserInExistingList(user);
  | 		}
  | 		
  | 		log.info("< update");
  | 		return "findUser";
  | 	}
  | 


  | 	public void updateUserInExistingList(User updatedUser) {
  | 		log.info("> updateUserInExistingList");
  | 		List<User> usersList = new ArrayList<User>();
  | 		for (User eachUser : users) {
  | 			if (updatedUser.getId() != eachUser.getId()) {
  | 				usersList.add(eachUser);
  | 			} else {
  | 				em.refresh(eachUser); // Force the update of the user in the em cache.
  | 				log.info("User from the DBase (refreshed) => " + eachUser);
  | 				usersList.add(eachUser);
  | 			}
  | 		}
  | 		users = usersList.toArray(new User[0]);
  | 		applyCurrentQuery();
  | 		log.info("< updateUserInExistingList");
  | 	}
  | 

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