[rules-users] Fusion: Null pointer exception when using sliding windows

[Davide Sottara]

not sure it's related, but it should be window:length(24) - notice the ":" !
are you checking the KnowledgeBuilder.hasErrors() method?

Otherwise, could you please post a full failing test case, together with the
version you are using ?

Thanks!
Davide

On 04/18/2013 08:59 AM, burmanator wrote:
> I am getting a null pointer exception when I try and use a sliding window.
>
> The rule I'm trying to run is:
>
> $primary : Foo($name : Name) over window length(24)
>
> $prev : ArrayList(size<1) from collect ( Foo(Name == $name, this before
> $primary))
>
> I am trying to look at the last 24 Foo events and have the rule only trigger
> when an event with that name hasn't been seen before. I also get a null
> pointer when I try and do a time window and no Foo events happen within the
> window. Shouldn't the rule just not fire?
>
>
>
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