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 :

rule "quest_reach_level_1_in_any_category_accomplished"

when

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.

Le 17/01/2012 19:23, Martin A a écrit :

Hello, guys,

I've got a rule which states:

rule "quest_reach_level_1_in_any_category_accomplished"

when

$gsc : GameStateController(hasEventOccurred("eventId") && !hasEventOccurred("otherEventId") && hasAnyEventOccurred("param1", "param2", "param3", "param4", "param5", "param6", "param7", "param8", "param9", "param10", "param11", "param12"))

$response : Response()

then

... some business logic

end

which ends up with:

Caused by: org.drools.RuntimeDroolsException: Exception executing predicate hasA

nyEventOccurred("level1_love", "level1_friendship", "level1_prosperity", "level1

_charisma", "level1_willpower", "level1_wisdom", "level1_entertainment", "level1

_adventure", "level1_inspiration", "level1_harmony", "level1_lightheartedness",

"level1_confidence")

at org.drools.rule.PredicateConstraint.isAllowed(PredicateConstraint.java:298)

I'm using Drools 5.3.0.Final and it fails when it comes to evaluating the predicate hasAnyEventOccurred(String... varArgs).

Thanks,

Martin
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