[rules-users] Any form of "groub by" or "distinct" in accumulate/collect ?

[Jan Šťastný]

Hi,
maybe I misunderstood you, but what about a set collection. Just 
implementd equals method of A properly and use accumulate function 
collectList
when
     accumulate(
         C(
             $a:b.a
         )
         , $uniqueASet:collectSet($a)
     )
then
     do whatever you want

Hope that helped.
Jan

Dne 10.5.2014 11:36, Ephemeris Lappis napsal(a):
> Hello.
>
> Perhaps that my question has few sense or none...
>
> I've an object graph with say A, B and C.
> A has one or many B, that has one or many C.
>
> I can navigate through the relations between my objects in both direction.
> For example, I can do fo any instance of C : c.b.a (or c.getB().getA())...
>
> My initial input facts or only C objects, and I'd like to identify all the
> distinct A instances, and insert them into my working memory, as they
> participate to global rules.
>
> I've been looking for some forms of accumulate or collect, but I've not
> found a correct way to do it.
>
> Some help ?
>
> Thanks
>
> Regards.
>
>
>
> --
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