Is there a working example on integrating Drools Flow with Spring?

I can see an attempt in the trunk: http://anonsvn.jboss.org/repos/labs/labs/jbossrules/trunk/drools-container/drools-spring/src/test/resources/org/drools/container/spring/beans/persistence/beans.xml

but it is rather a sketch...

I am looking to create a stateful JPA KnowledgeService, DB Logger and register Variable Persisters via Spring.

Thank you,
/Anatoly