- EntityHome and optimistic transaction

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- EntityHome and optimistic transaction

- EntityHome and optimistic transaction

2007-07-11 - By azalea

Back
Hi,

Now I struggle with EntityHome :)

my environments:
JBoss AS 4.2.0.GA
Seam 2.0.0.BETA1(CVS)
Seam gen-generated project(ear)

I have a simple CRUD app using EntityHome.
The app needs the optimistic transaction.

Scenario:
1. In browser tab#1, display the person list.
2. In tab#1, select a person from the person list for editing.
(1)the selected person id is bound to EntityHome.setId().
(2)long-running conversation begins.
(3)the view for editing the person information is rendered.
3. In tab#2, display the person list.
4. In tab#2, select the same person from the person list for deleting.
(1)the selected person id is bound to EntityHome.setId().
(2)long-running conversation begins.
(3)the view for deleting is rendered.
5. In tab#2, click "delete" button.
(1)EntityHome.remove() is called.
(2)long-running conversation ends.
(3)now the person record doesn't exist in database table.

Now If I click "edit" button after editing any entity attributes in tab#1,
OptimisticLockException is thrown.
Because the person record was deleted by tab#2, this is OK.

But if I click "edit" button "without" editing any entity attributes in tab#1,
OptimisticLockException is not thrown.
And the following occur:
-Any update SQLs don't seem to be executed.
-However JSF message "successfully updated" added by EntityHome is displayed.

How can I detect this situation in my app?

Thanks in advance.

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