[rules-users] absent features in JSR-94 compliant drools

Hi All, I would like to know the features in drools that can't be used when using the JSR-94 compliant jars. Any pointers would be much appreciated. *The context:* I am developing a rule engine for JCAPS/OpenESB. I need to figure out the drools features that can't be used through the JAR-94 API. Based on this finding, I can decide whether I have to develop a drools specific rule engine or a JSR-94 compliant one. Thanks Prem