[rules-users] Events facts in process constraints

[Edson Tirelli]

   It is definitively possible to use events in process constraints. Your
exception, though, implies that you are using a sliding time window on a
fact type that is not declared as an event. In later versions I improved the
error handling to raise a compile time error when this is detected, but I
guess you are using 5.0.1, where it still throws a runtime exception:

java.lang.ClassCastException: org.drools.common.DefaultFactHandle cannot be
cast to org.drools.common.EventFactHandle        at
org.drools.rule.SlidingTimeWindow.updateNextExpiration(SlidingTimeWindow.java:192)

   Can you double check your rules to make sure you are not doing that?

   Edson




2010/2/10 paulB <paul.borlin at sironahealth.com>

>
> I'm not sure if I had stumped everyone, or my previous post a really dumb
> thing for me to ask.  If it's something where I should have read the
> manual,
> can anyone give me a hint?  Thanks!
> --
> View this message in context:
> http://n3.nabble.com/Events-facts-in-process-constraints-tp187826p198442.html
> Sent from the Drools - User mailing list archive at Nabble.com.
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-- 
 Edson Tirelli
 JBoss Drools Core Development
 JBoss by Red Hat @ www.jboss.com
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