Re: [rules-users] Embedding Drools in Eclipse

Since my last post was so nicely hijacked I have started a new thread in the hopes that the Drools team can shed some light on this. My setup is as follows: 1) 2 plug-ins, one containing the drools libraries, and a second plugin containing the facts and the rule file. 2) The rules engine plugin has a buddy-policy of "registered" and the facts plugin has the rules engine plugin as a registered buddy. Here is the rule(although any fact that has field assignments fails) rule "Retrieve CID Presentation Model" ruleflow-group "RetrieveCID" when CIDPresentationModel($cidValue:cidValue,$cidExpirationDate:expirationDate) then boolean cidResult = cidService.verifyCIDIsValid($cidValue,$cidExpirationDate); CIDResult result = new CIDResult(cidResult); insert(result); System.out.println("Executing: Retrieve CID Presentation Model"); end Deep in the bowels of drools there is a call to ClassFieldAccessorFactory.getClassFieldReader where it attempts to create a class using the byte array classloader, i.e. final Class<?> newClass = byteArrayClassLoader.defineClass(className, bytes,PROTECTION_DOMAIN). Its at this point that a NoClassDefFoundError on the BaseObjectClassFieldReader. I am a little concerned when I see what appears to be a custom classloader since if you are going to embed the rules engine it should respect the classloader hierachy from the container, whether that be an app server like Websphere or client side container like Eclipse. I am wondering if the team has had success with this particular setup (the examples for Drools work cause they are all in the same plugin). I have made the example as simple as possible but still no luck. Seems like this is pretty basic functionality so I can't imagine this hasn't been tested. -- View this message in context: http://www.nabble.com/Embedding-Drools-in-Eclipse-tp20814423p20814423.html Sent from the drools - user mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users