Actually there is a $h in the code… sorry for the omission in the email.

 

Just checked it again today – it gives me same result as yesterday :

 

rule …

    when

            o : Date from accumulate (  

Parent( $h : height  ) ,

init(;),

action(;),

reverse(),

result( $h )

)

            then …

end

 

 

-Sergey

 

 

 

you didn't have a dollar on the field binding:
Parent( h : height  )

$ is optional, but you must use the same in all places.

Mark
Manukyan, Sergey wrote:

Folks,

 

Using 4.0. Think I found a bug in accumulate. The variables defined inside <source pattern> cannot be recognized inside of other parts of accumulate (action, result)

 

f.e.

 

rule …

    when

            o : Date from accumulate (  

Parent( h : height  ) ,

init(;),

action(;),

reverse(),

result( $h )

)

            then …

end

 

 

Produces : $h cannot be resolved

 

 

Stack trace:

 

 

      at org.drools.rule.Package.checkValidity(Package.java:408)

      at org.drools.common.AbstractRuleBase.addPackage(AbstractRuleBase.java:288)

      at com.lear.rules.RuleBaseFacade.getRuleBase(RuleBaseFacade.java:46)

 

 

 

-Sergey

 

 

 

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