Re: [rules-users] ArrayIndexOutOfBounds exception when predicate parameter is varArgs
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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