May be drool cannot support variable length arguments in methods.
But, seeing your rules, I think you should change the way you match
your events objects by exploiting drools syntax and RETE instead of
calling predicates.
If I understand well, you are creating a game, and this rule should
trigger when the player achives some goals to pass him to next
level.
So I guess that your GameStateController contains a set of Event
objects ?
If yes, I recommend inserting directly the event in the session, and
write a rule like this :
Event(id == "eventId") not Event(id == "otherEventId") exists Event(id == "param1" || "param2" ||
"param3" .... etc etc)
$gsc : GameStateController() // if you still need it,
consider adding it as a global
$response : Response() // if you can, set
it as global
then
... some business logic
end
Note that it is solving the problem of varaible length argument,
using the fact that you can add easily new terms to a boolean
expression.