[rules-users] Casting an Object value in the LHS

Suppose I have a "Measurement" class, with a getName() method that returns a String and with a getValue() method that returns an Object. Sometimes the Object is a String, sometimes a Integer, sometimes a Double. I know that a "Foo" Measurement must be an integer, so I could cast (or otherwise coerce) into a form that can be compared with a constant integer (or other "Foo" Measurement). How do I handle this type of value in the LHS of the rule? when $m : Measurement(name == "Foo", value < 10) then System.out.println("It's less than ten!"); end I'd also like to be able to test for the Objects type (instanceof). I'm using java as my dialect, if that makes a difference. For other reasons I'd like to avoid having to either subclass Measurement or add type-specific value accessors. -Russ