100o blessing points to Leigh Dodds for writing a little showcase of the Jena 2 inference engine.
This one helped me today to get grip of the inference engine and some thoughts about forward chainer I had. At the moment I have to drill the engine up so that I can decide if it queries the local model or a SPARQL source, nasty work.
Extending this thing looks easy, but when you want to create more than one variable binding in a BuiltinRule… whatever, I hope I can blog the solution soon.