Hi all !
I have allrwdy postet this question to the Oreilly's book forum, but can not
figure out how construct the following:
I have multiple Entities (Entity1, Entity2, ..., EntityN) and have put on top
of each entity a session bean (Entity1Dao, Entity2Dao, ..., EntityNDao). What I
want to do is to hadle an update of entity1, entity2, entityn within one single
transaction.
Any exception during entity management should mark the just running transaction
for rollback, so when an exception occured within Entity2Dao no data from
Entity1 should persist. After the command flow has end, I would like to commit
all changes (transaction commit).
Is there any public example or some nice lad who can give me any source code
how to manage this? If possible, I would like avoid to use stateful beans . The
base code for my entity DAOs is like this:
| public abstract class GenericDaoImpl<T extends GenericDatabaseObject, PK
extends Serializable> implements GenericDao<T, PK> {
|
| /** EntityManager */
| @PersistenceContext(type=PersistenceContextType.TRANSACTION)
| EntityManager manager;
|
| @TransactionAttribute(TransactionAttributeType.REQUIRED )
| public void save(T instance) {
| System.out.println(manager);
| manager.persist(instance);
| }
|
| @TransactionAttribute(TransactionAttributeType.REQUIRED )
| public void delete(T persistentObject) {
| manager.remove(persistentObject);
| }
|
|
|
|
|
| and the sub class for two specific session beans is as in following example:
|
| @Stateless(name = "AddressDao")
| @Remote(AddressDao.class)
| @Local(AddressDao.class)
| public class AddressDaoImpl extends GenericDaoImpl<Address, Long>
implements AddressDao {
| // ...
| }
|
| @Stateless(name = "BookDao")
| @Remote(BookDao.class)
| @Local(BookDao.class)
| public class BookDaoImpl extends GenericDaoImpl<Book, Long> implements
BookDao {
| // ...
| }
|
I am using the latest JBOSS 4.0.5 and EJB3R9 and
PersistenceContextType.TRANSACTION for the EntityManager.
Thank you very much,
Maciej A. Bednarz
View the original post :
http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4002397#4002397
Reply to the post :
http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4002397
_______________________________________________
jboss-user mailing list
[email protected]
https://lists.jboss.org/mailman/listinfo/jboss-user
