Hi, I'm quite intrigued by this question also myself, I would like to know more about what you mean by "configurable" ? For instance you can have the window 'declared' declare window SensorReading30s SensorReading() over window:time(30s) from entry-point DEFAULT end and also use this custom window name in the accumulate rule. Do you mean by "configurable" , known at runtime and varying? A solution I can think of in that case, a specific rule with the housekeeping style; but I'm quite worried about performance issues may arise. Just my 2c, hope maybe helps? On Tue, Jun 10, 2014 at 4:18 AM, moonbeam <jplaberge(a)magenta.ca&gt; wrote: > How can we make the 'over window:time' parameter being configurable? > > Something similar to the following rule (that does not compile at all). > See > the $windowTime variable. > > > declare TemperatureThreshold > windowTime : String = "30s" > max : long = 70 > end > > declare SensorReading > @role( event ) > temperature : String = "40" > end > > rule "Sound the alarm in case temperature rises above threshold" > when > TemperatureThreshold( $max : max, $windowTime : windowTime ) > Number( doubleValue > $max ) from accumulate( > SensorReading( $temp : temperature ) over window:time( $windowTime ), > average( $temp ) ) > then > // sound the alarm > end > > > > > > -- > View this message in context: > http://drools.46999.n3.nabble.com/How-can-we-make-the-over-window-time-pa... > Sent from the Drools: User forum mailing list archive at Nabble.com. > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users