I don't know If I understood well, but did you try this? when $xs : ArrayList() from collect(X()) $total : Number() from accumulate(X($c: count), sum($c))
The accumulate will iterate over all the X and calculate the sum. Best, On Fri, May 21, 2010 at 2:12 PM, ljnelson <ljnel...@gmail.com> wrote: > > I have a rule that needs to make use of the accumulate() function. > > It also needs the value of the first argument to the accumulate() function. > > Suppose there are 5 Xs in working memory, each with "count" fields. > > I need--in my consequence--access to (a) the list of 5 Xs, and (b) the > result of the accumulate function having worked on them (in my case it's > really just a simple sum, so accumulate(X($count : count), sum($count))). > > Naively, I tried this, having a strong and accurate supposition that it > wasn't going to work: > > when > $xs : ArrayList() from collect(X()) > $total : Number() from accumulate($xs, sum(count)) > > At any rate, I hope that helps convey what I need. My consequence needs > the > list of Xs the accumulate function worked on, as well as the result of the > accumulate function (the Number). What's the best way to accomplish this? > > Thanks in advance, > Laird > -- > View this message in context: > http://drools-java-rules-engine.46999.n3.nabble.com/from-accumulate-somevar-tp834882p834882.html > Sent from the Drools - User mailing list archive at Nabble.com. > _______________________________________________ > rules-users mailing list > rules-users@lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > -- XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX Esteban Aliverti
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