Re: [rules-users] Can Drools be Used for this application?

Hello, have you looked at the cep part of drools ? (drools-fusion) it is exactly doing what you want with event. You add an event caracteristic on an existing fact you insert in a statefull session and you can have rules using time constraint regards Nicolas Heron 2009/4/22 cyphr <hrishikesh.varma(a)wipro.com&gt; > > Hi, > > I have a scenario where i have: > - A listener that listens to a port and collects datapackets(Logs of > Events) as they come and dumps to a DB. > - consider the data that goes into my table is parsed, processed > (meaningful, not raw anymore). > > > Can Drools sit in between this listener and my DataBase to achieve the > following : > > 1. Monitor the frequency of occurrence? Say if/when event 'X' occurs 'n' > times in a 'z' time window? > 2. ignore event 'X' until it occurs n times. > 3. track a sequence of events - event X followed by event y within a > fixed > time window. > > (the RHS for any of these is, at the moment, not very consequential. i > might > just raise a flag or something to indicate something has happened...) > > My query is primarily to understand if this can be achieved. > i may have around a million logs a day, but - only one event at a time is > passed from the listener to Drools. Can drools hold the knowledge of > previous facts(like count) into its working session? or does it require > to > store all these facts also? > > Should i be firing the rules whenever each log/event enters my system? or > should i accumulate the day's facts ? (but i might have rules that need > to > catch conditions spreading over a few days ...) > > Some pointers or suggestions on this would be great! > Thanks! > > -- > View this message in context: > http://www.nabble.com/Can-Drools-be-Used-for-this-application--tp23170278... > 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 > _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users