I also needed access to the Configuration object (for a different reason), and 
I worked around it by extending HibernateSessionFactory, overriding its 
createSessionFactory method, and putting the original code of the method in 
there along with my modifications:


  | @Scope(ScopeType.APPLICATION)
  | @BypassInterceptors
  | @Startup
  | public class SmartHibernateSessionFactory extends HibernateSessionFactory {
  |     
  |     @SuppressWarnings("unchecked")
  |     protected SessionFactory createSessionFactory() throws 
ClassNotFoundException {
  |             ...
  |             configuration.setInterceptor(...)
  |             ...
  |     }
  | }
  | 

Now, this is definitely a hack: there's code duplication involved, and if a new 
version of Seam changes anything in createSessionFactory you'll need to 
remember to carry over the changes. My suggestion to the Seam team would be to 
add an empty method (maybe called furtherConfiguration) into 
HibernateSessionFactory and then change the last line in createSessionFactory to
return furtherConfiguration(configuration.buildSessionFactory());. That way one 
could easily change the configuration object without all the maintenance 
headaches.

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