Re: [rules-users] Evaluation of the of rules with 'window:length' event windows

Seems that there is a confusion here ... window:length(X) is constraining the events timestamps to be in a time-windows of length X (in seconds). To contrain the number of accumulated facts, it must be done by adding a constraint in the resulting list : $list : ArrayList(size > Nb) from accumulate(Class1($a:a) over window:length(X) from entry-point "Point" ... @wolfgang : if you use an internal counter in the accumulate, how can you test it internaly ? return empty (or null) list if max not reached ? $list : ArrayList() from accumulate($obj : Class1($a:a) over window:length(X) from entry-point "Point" init ( ArrayList list = new ArrayList(); ), action ( list.add($obj); ), return ( if (list.size() < Nb {return null;} else {return list;} )) ----- Mail original ----- De: "Wolfgang Laun" <wolfgang.laun(a)gmail.com&gt; À: "Rules Users List" <rules-users(a)lists.jboss.org&gt; Envoyé: Mercredi 16 Mai 2012 13:02:46 Objet: Re: [rules-users] Evaluation of the of rules with 'window:length' event windows Accumulate the count of elements (in addition to whatever you accumulate) and test the result as being == X. As of (IIRC) 5.3.0, you can write multi-function accumulates. -W On 16/05/2012, senyatur <senya.touretski(a)emc.com&gt; wrote: _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users