Drools & Scala usage example

$ sbt test
$ sbt run
$ sbt universal:packageBin
# -- packaged artifact is placed in target/universal directory

Some advices :

• don't use fat jar with drools, switch to sbt-native-packager
• Scala case classes are perfect for your rules
• Use only java collections within the classes used by your rules. Avoid the scala collections in that precise case but rely on collection.JavaConversions._ implicits to hide that restriction.
• In knowledge bases only use declarative classes (declare) for internal usage, such as intermediary reasoning state.