why transaction is rollbacked? @CreateProcess @Stateless EntityManager

[yakamax]

Hello,

I have a stateless bean with an EntityManager and one method annoted with @CreateProcess

@Stateless
@Name("createMyObject")
public class CreateMyObjectBean implements CreateMyObject
{
    @Logger private Log log;
    
    @In
    EntityManager entityManager;
    
    @In
    User currentUser;
 
    @In(create=true)
    MyObject myObject;

    @CreateProcess(definition="MyWorkflow", processKey="#{myObject.id}")
    public String createMyObject(String name){
        
                try{
                        myObject.setName(name);
                        entityManager.persist(myObject);

                }catch (Exception e) {
                        log.error("Exception...");
                        e.printStackTrace();
                        return null;
                }               
    
                return "success";
                        
    }

    
}

In Server log, CreateProcess is intercepted and processed.

In database log I see insert for MyObject BUT directly after I see a rollback and no trace of jbpm insert.

I don't understand why transaction is rollbacked.

I work on Seam 2.1.1.GA and JBoss 5.0.0.GA.

Do have any idea?
Thank you.

[yakamax]

Let me know if it's possible to use @CreateProcess in @Stateless Bean which persist an Entity.

I'm little bit confused about that.

[yakamax]

I found solution :

It's definitly possible to @CreateProcess and persist Object with same transaction in a Stateless bean.

What I did :

Add in components.xml

<transaction:ejb-transaction/>

Get entityManager this way in you Stateless Bean :

@PersistenceContext
    EntityManager entityManager;

I supposed problem was about EJB transaction. Please if someone (Gavin ;) ?) can explain me more...

Thank you.

[yakamax]

More information : I'm don't know if it can be source of problem but I forgot to tell you that my method createMyObject(String name) is exposed and called by remoting @WebRemote (javascript client).

[yakamax]

To persist it works but if in the same bean I would like to request database, I always get no result...

For the first post this is my exception received in my callback :

...
java.lang.IllegalStateException 
 Transaction begin not detected
 try installing transaction
 ejb-transaction in components.xml
...

[yakamax]

Nevermind,

with

<transaction:ejb-transaction/> 

in components.xml and

@In
EntityManager entityManager;

it's works pretty well calling by WebRemote.