At this moment, there is no support for jumping (or tumbling, as it is also known) windows. It is planned for future versions.
The way to do it now, if you need is to use a helper window fact. Regarding perf, you would need to check if it would be fast enough for your use case.
Edson
2010/1/11 Ahmed Hafsi
<hafsi@fzi.de>
Hi Guys,
I see that there is support of sliding windows in drools fusion , my
question is that is it possible to get jumping windows support ? i.e. the
interval gets from (0,10) to (10,20) and so on. instead of (0,10) to (1,11).
If not do you recommand implementing it using rules ? i.e will the
performance hits be too big compared with the builtin support ?
Thanks
k-
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Edson Tirelli
JBoss Drools Core Development
JBoss by Red Hat @ www.jboss.com