spring module for drools

[paskos]

Hi,

I'm new to drools and I would like to use the spring module for drools.
I have a question when I created my defaultRuleSource.

If I have a CartService that provides basic services for a ShoppingCart.
And I want this service to use drools rule engine.

How should I wire the rule engine to the service ?
How can we specify if we want a StatefullRuleSession versus a StatelessRuleSession ?

thanks

paskos