Hi everybody,
I have a class based on the "Seam APplication Framework" defined as
| @Name("machineHome")
| class MachineHome extends EntityHome<Machine>
|
I submit a form whose fields are bound to variables of type
| #{machineHome.instance.fieldName}
|
calling the action (I overrid the method just to play with exceptions)
| @Override
| @Transactional
| public String update()
| {
| try {
| getEntityManager().joinTransaction();
| getEntityManager().flush();
| updatedMessage();
| return "updated";
| } catch (Exception e) {
| e.printStackTrace();
| return "";
| }
| }
|
When I submit the form I see the following log message
| 00:32:57,454 INFO [STDOUT] Hibernate: update public.machines set
version=?, start_date=?, status=?, id_unit=?, machine_code=?, purchase_date=?,
last_maintenance_date=?, dismission_date=?, expected_life=?, id_machine_type=?,
maintenance_category=? where id_machine=?
|
I see it as many times as the number of fields I modified before submitting the
form.
This happens if in faces-config.xml I set
| <lifecycle>
| <phase-listener>
| org.jboss.seam.jsf.SeamPhaseListener
| </phase-listener>
| </lifecycle>
|
while it does not happen if I set
| <lifecycle>
| <phase-listener>
| org.jboss.seam.jsf.TransactionalSeamPhaseListener
| </phase-listener>
| </lifecycle>
|
In both cases the entity manager get flushed (and the changes saved) even if I
do not call flush() explicitely and when I call a method that is not tagged as
@Transactional.
Can anybody help me to understand why that happens and how to flush the entity
manager only when I call flush explicitely? Should I use a @Stateful session
bean ?
Thanks to anybody for help.
Ciao Francesco
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