[jboss-user] [JBoss Seam] - Re: Some doubts about Seam

[magoicochea]

Thanks for your answers, I have another questions:

1.- When I developed applications with JSF I used a JSF/Spring/Hibernate architecure using Managed Beans/Services/DAOs, the managed beans had the presentation logic, the Services had the business logic and the DAOs had the data access logic, it was there were I performed my hibernate queries. 

On the examples I've seen the entity beans would be the object that I manipulated on with the DAOs, but I have also seen that the session bean contains data, business and presentation logic. The jsp is being managed from there, business rules are being applied on its methods and it is also making queries to the database. I suppose this is just for the simplicity of the event, but how can I separate efficiently this three layers? What's the closest thing you can do to the Service/DAO pattern on JBoss Seam?

2.- When database queries were done on the example I didn't see any transaction being open, does JBoss Seam manage them transparently like Spring or were they omitted on the example?

Thanks again

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