Re: [rules-users] How can we make the ‘over window:time’ parameter being configurable?

[moonbeam]

By 'configurable', I mean 'user defined' instead of 'programmer defined'.  I
know, I can write (and it will work):

rule Sound the alarm in case temperature rises above threshold 
when 
   TemperatureThreshold( $max : max ) 
   Number( doubleValue  $max ) from accumulate( 
   SensorReading( $temp : temperature ) over window:time( 30s ), 
   average( $temp ) ) 
then 
   // sound the alarm 
End

In this manner, the threshold ($max) is ‘user defined’.  Just need to inject
a TemperatureThreshold fact with user’s preferred 'max' value.
But the 'window:time' is hardcoded forever.

I would prefer injecting TemperatureThreshold fact containing a second
parameter (windowTime) that could be decide at 'inject time'.  That gives a
rule similar to the one I had posted originally.
But, unfortunately this way, the rule does not compile at all. Passing a
variable (like $windowTime) to 'window:time' does not seems to be syntax
acceptable.




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Re: [rules-users] drools-examples.zip location?

[moonbeam]

https://github.com/droolsjbpm/drools

Press the Download zip button on right side



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[rules-users] How can we make the ‘over window:time’ parameter being configurable?

[moonbeam]

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





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