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

Hello You can set any attribute as the time clock You have to add an annotation It is in the fusion doc Sorry for my late answer but I am on holidays :) Regards Nicolas 2009/4/27 cyphr <hrishikesh.varma(a)wipro.com&gt; > > Thanks Nicolas, > I looked into Drools-fusion over the weekend - interesting! > i noticed that the events are wound around the clock in the example > provided > - is that so always? > i would want my correlation to work with the time from timestamp that is > already there as part of the fact. > > Any pointers on where i can get some more reading done on drools-fusion, > with some more examples? > > Thanks again! > Rishi > > > Nicolas Héron wrote: > > > > 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 > > > > > > -- > 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