The JSF Pages from Entity Classes wizard generates code that is not in 
accordance with the usage of the Java Persistence API. More specifically, 
application-managed persistence context are not properly synchronized with JTA 
transactions. This causes for example silent failures when inserting data.

Steps:
1. Create a new wep application on SJSAS/GF
2. Create an entity class and a persistence unit using JTA
3. Create JSF pages from the entity => in the created controller class the 
following code is generated:

    public String create() {
        EntityManager em = getEntityManager();
        try {
            utx.begin();
            em.persist(entity);
            utx.commit();
    ....

The problem with this is that the entity manager is created outside of the 
active transaction scope and therefore it is not synchronized with the 
transaction. Because of this the persistence context is not flushed before the 
transaction commits and hence nothing is inserted into the database.

This can be fixed either by creating the entity manager within the transaction 
scope or by invoking em.joinTransaction() inside the scope.