Hi, Temporal Reasoning with Accumulate - (like 3- rule "Customer login from more than 5 locations in the last one month") What if I want to reset my count for accumulate within the time specified sliding window.So that I can have the RHS triggered for every 10times the event occurs in the same window. For Example: when $customer : Customer( $id : id ) Number( intValue > 10 ) from accumulate( CustomerLogin( loginStatus=="Failed", customerId == $id,$cusId:customerId) over window:time( 30s ), count( $ cusId) ) then // do something as the customer had abnormal number of failed violations in last 30 secs. end Right now am doing something similar, but using a manual approach -of explicitly counting. Any Light on this? Regards Rishi ---------------------------------------------------------------------- Message: 1 Date: Tue, 19 May 2009 11:17:41 -0400 From: Edson Tirelli <tirelli(a)post.com&gt; Subject: Re: [rules-users] can drools support complex rules To: Rules Users List <rules-users(a)lists.jboss.org&gt; Message-ID: <e6dd5ba30905190817q33d15b9er5efee64bc74cdb0e(a)mail.gmail.com&gt; Content-Type: text/plain; charset="windows-1252" Your question is funny. First you ask if Drools is capable of managing complex rules and then you mention examples of extremely simple rules? :) Drools is FOL complete and so can represent any well formed First Order Logic expression. Anyway, I will use this message to advertise some of the temporal reasoning features that we have on Drools 5 for the benefit of anyone interested. There are several ways of authoring such rules, depending on how you model your problem domain. One possible way of doing them is: #1: rule "If a customer login within 5 minutes from two different locations, mark the user invalid." when $l1 : CustomerLogin( ) $l2 : CustomerLogin( userId == l1.$id, location != $l1.id, timestamp after[0s, 5m] $l1.timestamp ) then // mark user as invalid end In the previous example I assumed both login objects would be in working memory, but you can easily query for the previous login in an external datasource, pulling the data from the previous login on-demand for the reasoning cycle. #2: rule "If the customer location is not on a list of valid locations, mark the user invalid" when $l : CustomerLogin( location not memberOf $validLocations ) then // mark the user invalid end In the above rule, I assume the valid locations list is a global list, but you can as easily model locations as being facts on your working memory or a service end point that you can call to validate the location. #3: rule "Customer login from more than 5 locations in the last one month" when $customer : Customer( $id : id ) $locations : Set( size > 5 ) from accumulate( CustomerLogin( customerId == $id, $loc : location ) over window:time( 30d ), collectSet( $loc ) ) then // do something as the customer logged in from more than 5 locations in the last 30 days end In the previous rule I decided to use sliding windows, just to show how that feature can be used to simplify rules, but again, there are several ways of doing it. I strongly recommend you read Drools manual. http://www.jboss.org/drools/documentation.html Cheers, Edson 2009/5/19 Bhushan Bhangale <bhushan_bhangale(a)kaleconsultants.com&gt; > Hi, > > > > I recently came across Drools. I gone through the documentation and the > examples provide are quite simple. I want to know if it can be really > applied to complex real world problems. > > > > Take for example, > > > > If a customer login within 5 minutes from two different locations, mark the > user invalid. > > How can I write the above rule in drools? I have the data when the user > last logged in and the data of current login. You can say two objects. > > > > May be my understanding is wrong but looks like based on rule I have to > pass all the required data. How can then at real time new rules can be > added? > > > > For example, > > > > If the customer location is not on a list of valid locations, mark the user > invalid. > > > > For the above rule I need to pass a list of valid locations as well. > > > > Now how about "Customer login from more than 5 locations in the last one > month"? > > > > Thanks > > *Mr. Bhangale Bhushan* > *Associate Manager* > *Kale Consultants Ltd.* > bhushan_bhangale(a)kaleconsultants.com > tel: +91 (0)206 608 3777<http://www.plaxo.com/click_to_call?lang=en&src=jj_signature&a... 1+%280%29206+608+3777&Email=bhushan_bhangale@kaleconsultants.com<http://www.plaxo.com/click_to_call?lang=en&src=jj_signature&To=%2B9%0A1+%280%29206+608+3777&Email=bhushan_bhangale@kaleconsultants.com> > > http://www.kaleconsultants.com > > > > > > > > > > Disclaimer: This email (including any attachments) is intended for the sole > use of the recipient/s and may contain material that is CONFIDENTIAL. Any > unauthorized disclosure / copying / distribution or forwarding of this message > or part is STRICTLY PROHIBITED. If you have erroneously received this message, > please delete it immediately and notify the sender. No liability is assumed for > any errors and/or omissions in the contents of this message. Information in > this message that does not relate to the official business of this Company > shall be understood as neither given nor endorsed by it. If verification is > required please request a hard-copy version. > > To know more about Kale Consultants, visit www.kaleconsultants.com > > ---------- > > > > > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > > -- Edson Tirelli JBoss Drools Core Development JBoss, a division of Red Hat @ www.jboss.com -------------- next part -------------- An HTML attachment was scrubbed... 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