Last few days I was thinking about transactions which can be manipulated by the
client. But till now I've no good solution. I want to have a bean which
transactions can be started, rollback and commit by the client. I want to have
a solution, where client can rollback only last transaction (not everything).
I've created simple stateful bean:
| @TransactionManagement(TransactionManagementType.CONTAINER)
| @FlushMode(FlushModeType.NEVER)
| @Stateful
| public class TransactionsStateful implements TransactionsStatefulLocal {
|
| @PersistenceContext(unitName = "ksiegi", type =
PersistenceContextType.TRANSACTION)
| protected EntityManager em;
|
| @Resource
| protected SessionContext ctx;
|
|
| public void commit() {
| em.flush();
| }
|
| @TransactionAttribute(TransactionAttributeType.REQUIRED)
| public void rollback() {
| throw new RamzesException("Rollback");
| }
|
|
| private short tmpId = 0;
|
| @TransactionAttribute(TransactionAttributeType.REQUIRES_NEW)
| public void a() {
| TypDzial typ = new TypDzial();
| typ.setNazwa("zooo32");
| em.persist(typ);
| tmpId = typ.getId();
| }
| }
|
I run this code using:
| local.a();
| try {
|
| local.rollback();
| } catch (RamzesException e) {
| }
| local.commit();
|
But the data was stored, even though I've thrown an exception using rollback
method :( Yes, I know that I've catched the exception but client will be
executing methods this way - he can rollback only last transaction, not all.
Is there any chance to rollback only last transaction?
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http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3912037#3912037
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