[jboss-user] [JBoss Seam] - DataModel, Factory and Stale Data

[smutchler]

Is it possible to use a SSB with a DataModel.  It's funny that the examples in the books and the JBoss web site use a SFSB and then say it's not a good idea to use SFSB with Seam.  The problem I have with SSB is that the data is often stale.  If you modify it in another SB (or even the same SB) and then return to the page it is showing the stale data.  There has to be a way to do this without using SFSB or resorting to using a conversation.  I can do this with straight JSF easily.

Your help is GREATLY appreciated!

Here is my SFSB:

@Stateful
@Scope(ScopeType.SESSION)
@Name("inventoryAction")
public class InventoryActionImpl implements Serializable, InventoryAction {

	Logger log = Logger.getLogger(InventoryActionImpl.class);

	@DataModel
	private List inventory;

	@DataModelSelection
	@Out(required = false)
	private Car car;

	@PersistenceContext(type = PersistenceContextType.EXTENDED)
	private EntityManager em;

	@Factory(value = "inventory")
	public void fetchInventory() {
		CarDAO carDAO = new JPACarDAO(em);
		inventory = carDAO.filterByStatus(Car.STATUS_AVAILABLE);
	}

	public String buy() {
		return "buy_car_admin";
	}

	public String edit() {
		return "edit_car_info";
	}

	public String createNew() {
		car = new Car();
		return "add_car";
	}

	public String deleteInventory() {

		List toBeDeleted = new ArrayList();

		for (Car car : inventory) {
			if (car.isSelected()) {
				toBeDeleted.add(car);
			}
		}

		// delete from database
		CarDAO carDAO = new JPACarDAO(em);
		carDAO.delete(toBeDeleted);

		// refresh cached inventory (seems to work) 
                // but I'm screwed if another SB updates the data
		fetchInventory();

		return null;
	}

	@Remove
	@Destroy
	public void destroy() {
	}

}


Thanks,

Scott



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