Issue with Drools Fusion "during" temporal operator

Question

I've started to work with Drools Fusion and faced strange issue with during temporal operator. For a reason I cannot make it too work though for example after operator is working fine.

Here is declaration of my event - it just contains an intervals of particular type:

declare WorkingDayInterval
   @role(event)
   @timestamp(event_ts_local)
   @duration(duration_in_seconds)
end

Here is my rule:

rule "Idles in Processing period"
when
 $processing : WorkingDayInterval( subcategory == "processing")
 $longIdle : WorkingDayInterval(this during $processing, subcategory == "idle",duration_in_seconds > 600)
then
    System.out.println ("Bad Idle Event:");
    System.out.println ($processing.event_ts_local);
    System.out.println ($processing.duration_in_seconds);
    System.out.println ($longIdle.event_ts_local);
    System.out.println ($longIdle.duration_in_seconds);
end

When I run it nothing is fired.

However when I change during to after I get following results:

Bad Idle Event:
Mon Feb 25 05:19:00 MSK 2013
2350
Mon Feb 25 05:20:00 MSK 2013
901

and looking at the values I clearly see that based on start timestamps and durations second event is inside the first event and so duration should have been fired.

Is it a bug in the Drools Fusion or I am doing something wrong?

BTW - I am running in a Cloud mode

Answer 1

I think the problem is that you are assuming that @duration is measured in seconds when in reality Fusion expects it to be expressed in milliseconds. So, in your case, $processing event starts at 05:19:00.00 and ends at 05:19:02.35 and $longIdle starts at 05:20:00.00 and ends at 05:20:00.90. As you can see, $longIdle during $processing is false but $longIdle after $processing is true.

Hope it helps,