Each (not the) Recommendation with the maximum recommValue can be found using

   $recMax: Recommendation( slot == 1, $recommValue: recommValue)
   not Recommendation( slot == 1, recommValue > $recommValue )

with $recMax being bound to one of the Recommendations with the maximum,
and the maximum value being bound to $recommValue.

-W

On 24 November 2012 13:18, raffi <christian.koehler@s2008.tu-chemnitz.de> wrote:
Hello,

I have a problem with using the /from accumulate/ statement. It is because
I'd like to optmize my code a liitle bit. There are two rules that I like to
merge.

/query "max recomm value for slot 1"
        accumulate (Recommendation(slot == 1, $recomm_value : recommValue),
                                max     : max($recomm_value))
end/

and

/query "recomms for slot 1"
        recomm  : Recommendation(slot == 1)
end/

So with the first rule I get the maximum of the variable recommValue. The
second rule is for searching exactly this Recommendation-fact with this
value. Now I tried to merge them in the following way:
/
query "recomm for slot 1"
        $recomm : Recommendation() from
                                        accumulate(Recommendation(
                                                slot == 1, $recomm_value : recommValue),
                                                max($recomm_value)
                                        )
end/

But the returned value always is a double one. Is it because of the usage of
the maximum function? Is it possible to solve this problem with only one
query (getting that Recommendation-fact with the highest recommValue)?

Regards...



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