Using an @Embeddable class as seam component problem

[sinergy.simply_ice_star.yahoo.com]

I have an @Embeddable class called Comment. This is also a seam component. I am setting the properties of the component using a form in the interface. Then i inject the specified component into an action class and try to persist it to the database adding the comment to the collection of comments for a product. The Product class is an entity. I don't know why but when hibernate persists the comment to the database it inserts null values for all the fields even if thy are set from the interface. So the insert fails displaying this message:

WARN  [JDBCExceptionReporter] SQL Error: 1048, SQLState: 23000||
ERROR [JDBCExceptionReporter] Column 'COMMENT_USERNAME' cannot be null
ERROR [AbstractFlushingEventListener] Could not synchronize database state with session
org.hibernate.exception.ConstraintViolationException: Could not execute JDBC batch update


Please help me!

[asookazian]

show pertinent code

[sinergy.simply_ice_star.yahoo.com]

@In
private EntityManager entityManager;
@In
private ProductComment productComment;


public void add()
{
        productComment.setProductComment_date(new Date());
        Product product=entityManager.find(Product.class,productId);
        product.addProductComment(productComment);
}

[serkan.s.eskici.online.nl]

I'm having the same problem, did you already solve this ?

See also my post here