Does anyone have recommendations using a rules system like ILog's JRules in a non ejb fashion? Specifically using an IOC framework like Spring. I am loathe to use ejbs and am looking for an integration solution that is a bit simpler. So I am curious to hear about any experiences regarding this lighter "J2EE" approach.
The Jess rule engine is very flexible about being embedded in a variety of different environments, from J2ME all the way up to J2EE, including standalone applications, servlet frameworks, and ad-hoc servers of all kinds. The book Jess in Action (see my sig) provides a cookbook for integrating Jess in all kinds of systems.