Re: [rules-users] Drools Community Clinic Feb 4th 5PM GMT

Sounds like a very good idea. If you go forward with this, I'd love to see your method for solving the following type of problem: I need to update a particular object without causing the rule to re-fire. Say I have two classes, Stack and Board. I need to choose the Stack to put each Board, so one of these sorting rulles would look like this: when board : Board (thickness == 1) stack : Stack (location == "A") then board.setStack(stack); update(board); end The problem is the update statement puts the rule back in the Agenda to be fired again, thus an infinite loop. My solution in general has been to use a Collection to track boards that have been processed, but it seems to be alot of overhead. I'm not pleased by my solution. when board : Board (thickness == 1) stack : Stack (location == "A") processed : NamedCollection(name == "BoardsSorted", collection not contains board) then board.setStack(stack); update(board); processed.add(board); update(processed); end Also, the NamedCollection needs to be created, which I'm doing within the ruleset, which adds a somewhat meaningless to Business Analysts rule. Though I could create the NamedCollection in Java and add it to WorkingMemory prior to firing the rules, I'd like the rulesets to take care of themselves. My actual problem set is laced with many solutions that need to update objects. Even if the object is not directly related to the rule criteria, a map to the object needs to be created in the RHS so the LHS has a reference to the object being updated, thus posing the same problem as above. Your insights would be greatly appreciated. Mark Proctor wrote: > > I'm going to try an informal experiment for the 4th of February at 5PM > GMT (Date/Time subject to change), we will run an online Drools Clinic > in the form of a Webinar. So the idea here isn't of a 60 minute > presentation, but really more of a 60 minute interactive Q&A where we > will use the desktop to assist in some explanations talking through code > or examples. What do people think? > > Ideally we would have a set of pre-determined questions, with some adhoc > ones on the day too. Feel free to start listing your Qs here. I want to > avoid "What's WorkingMemory" type questions, but other than that, > anything is game. Also if anyone has anything cool they would like to > discuss about how they have used Drools, or just general interesting AI > ideas, then that's fine too - happy for this just to turn into a fun > geek chat too. > > Mark > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > > -- View this message in context: http://www.nabble.com/Drools-Community-Clinic-Feb-4th-5PM-GMT-tp21623144p... Sent from the drools - user mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users