With KieHelper we can reduce the amount of code there.

Reqs:

• Use PropertySpecificOption.ALLOWED
• Any (normal) error in the DRL must come out (= wrapped) as a IlllegalStateException which has an error message that contains "scoreDrl", for example "The scoreDrl has errors.
  • Ideally, if the DRL has multiple errors, they are all reported there.
  • Compare an error in the DRL before and after this change: is the the DRL line still avaiable?

Optional:

• I think errors and warnings are currently double logged, so these changes might fix that.
• Warnings should still show up in drools logging WARN, if they don't show up in optaplanner warn log any more
  • This is an acceptable regression
• By avoiding kmodel.toXML(), we can probably exclude xstream and kie-soup-xstream from the dependency tree