[Springframework-developer] Restricted visibility of beans in app context

[<Jon...@o2...>]

All,

I'm thinking about not making lowlevel spring beans like "dataSource", 
"hibernateSessionFactory" etc. visible to /any/ application code. Of 
course, they should be accessible by my DAOs via <ref bean..> but right 
now, one can always access every single bean using 
MyAppContext.getBean(..)

This is also an issue for my DAOs, which in turn should not just be usable 
by "anybody" but rather only by my BusinessLogicBeans etc.
The goal is to ensure some kind of proper design and layers just by 
keeping an eye on my (ideally visualized) application context descriptors 
and how <ref bean..> constructs are used.

This topic is somehow related also it goes one step further: 
http://forum.springframework.org/viewtopic.php?t=891

Any thoughts?
Jonas