Re: [rules-users] Pattern aggregation

Doing s.th. like $t1 : Trans( $id : id, $pc : pc, $tt : tt ) $t2 : Trans( this != $t1, id == $id, pc == $pc, tt < ($tt + 3600) ) is bound to produce poor performanc. Divide and conquer! You might start with a Consumer record Consumer( $id : id ) $t1 : Trans( id == $id: , $pc : pc, $tt : tt ) $t2 : Trans( this != $t1, id == $id, pc == $pc, tt < ($tt + 3600) ) You might run an (external) sort on the Transaction records and process it in batches of identical id+pc. If transaction times don't go around the clock, you might sort by date, and process day by day. You may have to create a Domain Specific Language for the non-programmers, putting a firm rein on how they combine the basic facts. Processing large batches is bound to require skills they just dont have. -W On 18 October 2010 16:14, Greg Barton <greg_barton(a)yahoo.com&gt; wrote: > It would be nice if we had an example of some rules. That way we can rule out obvious performance killers like cartesian products and multiple "from" clauses in one rule. > > GreG > > On Oct 18, 2010, at 5:19, Tim 4076 <tm4076(a)gmail.com&gt; wrote: > > Hi, > I'm trying to use drools to do grouping of data according to patterns defined in my rules, but I'm having issues creating something that works in a reasonable amount of time (seconds). I've tried all sorts of permutations without much luck and would like to hear how others would do the same thing. > > To give an example: I've got a big batch of transaction records and I want to aggregate all the records where the consumer id and product category are the same and the purchases were made within an hour of each other. > > The fact that its matching the same values between facts, rather than against constants seems to scupper it somewhat. > > I would go down the ETL route, but the idea is for non-techies to define their own aggregations using rules. > > -Cheers. Tim > > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > > > > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users