Re: [rules-users] Large number of rules in Drools

I can look into the solution of writing my own Java application for this solution. But I would still like to understand, if the problem is just because of the 3 values being checked in the rules ? Do complex rules dont have more than 1 checks ? If yes then this case should be supported no matter how simple the rule is right ? Also for the UI issue I mentioned. Assume some other complex rules. Is copying the thousands of lines in the text area not a problem in guvnor ? On Tue, Jan 10, 2012 at 12:38 PM, laune [via Drools] <[hidden email]<http://user/SendEmail.jtp?type=node&node=3649201&i=0> > wrote: > Assuming that the remaining 19998 rules are of the same kind, there is a > lot of data in these rules, and only very little logic. Ignoring the issue > of "Olympia" being one of the cities not being "Seattle", we have the > problem of matching a triplet of <field,state,city> from a Student fact so > that we can store one or more Subjects in Student.subjects. > > Imagine that you have objects of type Inscribe containing a triplet of > field, state, city and the pertaining List<Subject>. Then you could write a > single (!) rule > > rule register > when > $stu: Student ( $f: field, $s: state, $c: city ) > $ins: Inscribe( field==$f, state==$s, city==$c ) > then > $stu.setSubjects( $ins.getSubjects() ); > end > > BTW: Why do you use equals with state? Using "==" should be possible > here, too. > > And, of course, matching ~20000 different triplets to facts of a single > type isn't really RBS fodder. You can design a simple Java program that > achieves this goal, assuming you can come up with a straightforward > representation of the <field,state,city;subject+> mapping. > > -W > > > 2012/1/10 Shweta1986 <[hidden email]<http://user/SendEmail.jtp?type=node&node=3648792&i=0> > > > > My rules are as follows. >> >> rule "rule1" >> salience -2 >> dialect "mvel" >> when >> stud : Student ( field == "ARTS", state.equals("WA")) >> then >> java.util.List subList = new java.util.ArrayList(); >> Subject subject = new Subject(); >> subject.setName("ABC"); >> subject.setFees(33454); >> subject.duration(4); >> subList.add(subject); >> >> subject = new Subject(); >> subject.setName("XYZ"); >> subject.setFees(33454); >> subject.duration(4); >> subList.add(subject); >> >> stud.setSubjects(subList); >> end >> rule "rule2" >> salience -100 >> dialect "mvel" >> when >> stud : Student ( field == "ARTS", state.equals("WA") , city == >> "SEATTLE")) >> then >> java.util.List subList = new java.util.ArrayList(); >> Subject subject = new Subject(); >> subject.setName("ABC"); >> subject.setFees(33454); >> subject.duration(4); >> subList.add(subject); >> >> subject = new Subject(); >> subject.setName("XYZ"); >> subject.setFees(33454); >> subject.duration(4); >> subList.add(subject); >> >> stud.setSubjects(subList); >> end >> >> >> >> Student is the main object and it contains List of Subjects. here the >> way I am using the salience because >> if the input us shweta, ARTS, WA,Olympia it matched rule1 >> but if the input is shweta, ARTS, WA, Seattle it matches 1 and 2 but i >> want the rule 2 to be executed so salience. >> >> I am using StatelessKnowledge Session and also the resource change >> scanner. >> I execute one rule at a time and the scanner poll interval is 1 hour. >> When I started with 100 rules I was using "PK" as my source in >> changeSet.xml but when the rules grew to 20K I was not able to build the >> rules in Guvnor UI and hence I started using "DRL" as source. >> >> The way I generate drl is using a script which converts the csv to drl >> format. >> I copy the drl to the text area in techincal rules and save it. ( this >> copy is also paiful so I asked that if there is an upload drl file unlike >> the import drl file) >> In changeset I give the path to the url in webdav >> /guvnor/org.drools.guvnor.Guvnor/webdav/packages/StudentRules/StudentRules.drl >> >> I am not sure if I am doing it the right way. Please suggest. >> >> Thanks, >> Shweta >> >> On Mon, Jan 9, 2012 at 11:58 PM, laune [via Drools] <[hidden email]<http://user/SendEmail.jtp?type=node&node=3648661&i=0> >> > wrote: >> >>> Salience is just one way to force the evaluation of a condition before >>> others. In fact, using salience throughout is just a way of re-creating a >>> sequence of plain old if statements using a rules engine. >>> >>> I'm not going to waste my time and yours by elaborating on possible >>> alternatives unless you come up with a detailed description of your rules, >>> and how you run your rules engine: fact insertion, calls to fire, etc. >>> >>> -W >>> >>> 2012/1/10 Shweta1986 <[hidden email]<http://user/SendEmail.jtp?type=node&node=3647015&i=0> >>> > >>> >>>> I am not sure I understand that. What is the other option for this >>>> case. Why would simple rules not work for 20 K rules. Am I missing >>>> something. I cannot use database to store my rules. Drools also gives me >>>> salience which I need for my usecase. >>>> >>>> On Thu, Jan 5, 2012 at 11:29 PM, laune [via Drools] <[hidden email]<http://user/SendEmail.jtp?type=node&node=3646449&i=0> >>>> > wrote: >>>> >>>>> 2012/1/6 Shweta1986 <[hidden email]<http://user/SendEmail.jtp?type=node&node=3637255&i=0> >>>>> > >>>>> >>>>>> And my rules are very simple it is like if string comparison then >>>>>> set that's it.. >>>>>> >>>>> This doesn't really warrant the use of a rule based system. If >>>>> keeping this logic out of the application or an easy maintenance of these >>>>> if-then's are your main goals, there are other ways. I've already hinted at >>>>> this, with the idea of providing the information embedded in similar rules >>>>> as data. >>>>> -W >>>>> >>>>> >>>>> >>>>> _______________________________________________ >>>>> rules-users mailing list >>>>> [hidden email] <http://user/SendEmail.jtp?type=node&node=3637255&i=1> >>>>> https://lists.jboss.org/mailman/listinfo/rules-users >>>>> >>>>> >>>>> ------------------------------ >>>>> If you reply to this email, your message will be added to the >>>>> discussion below: >>>>> >>>>> http://drools.46999.n3.nabble.com/Large-number-of-rules-in-Drools-tp36303... >>>>> To start a new topic under Drools: User forum, email [hidden email]<http://user/SendEmail.jtp?type=node&node=3646449&i=1> >>>>> To unsubscribe from Drools: User forum, click here. >>>>> NAML<http://drools.46999.n3.nabble.com/template/NamlServlet.jtp?macro=... >>>>> >>>> >>>> >>>> ------------------------------ >>>> View this message in context: Re: [rules-users] Large number of rules >>>> in Drools<http://drools.46999.n3.nabble.com/Large-number-of-rules-in-Droo... >>>> >>>> Sent from the Drools: User forum mailing list archive<http://drools.46999.n3.nabble.com/Drools-User-forum-f47000.htm... Nabble.com. >>>> >>>> _______________________________________________ >>>> rules-users mailing list >>>> [hidden email] <http://user/SendEmail.jtp?type=node&node=3647015&i=1> >>>> https://lists.jboss.org/mailman/listinfo/rules-users >>>> >>>> >>> >>> _______________________________________________ >>> rules-users mailing list >>> [hidden email] <http://user/SendEmail.jtp?type=node&node=3647015&i=2> >>> https://lists.jboss.org/mailman/listinfo/rules-users >>> >>> >>> ------------------------------ >>> If you reply to this email, your message will be added to the >>> discussion below: >>> >>> http://drools.46999.n3.nabble.com/Large-number-of-rules-in-Drools-tp36303... >>> To start a new topic under Drools: User forum, email [hidden email]<http://user/SendEmail.jtp?type=node&node=3648661&i=1> >>> To unsubscribe from Drools: User forum, click here. >>> NAML<http://drools.46999.n3.nabble.com/template/NamlServlet.jtp?macro=... >>> >> >> >> ------------------------------ >> View this message in context: Re: [rules-users] Large number of rules >> in Drools<http://drools.46999.n3.nabble.com/Large-number-of-rules-in-Droo... >> Sent from the Drools: User forum mailing list archive<http://drools.46999.n3.nabble.com/Drools-User-forum-f47000.htm... Nabble.com. >> >> _______________________________________________ >> rules-users mailing list >> [hidden email] <http://user/SendEmail.jtp?type=node&node=3648792&i=1> >> https://lists.jboss.org/mailman/listinfo/rules-users >> >> > > _______________________________________________ > rules-users mailing list > [hidden email] <http://user/SendEmail.jtp?type=node&node=3648792&i=2> > https://lists.jboss.org/mailman/listinfo/rules-users > > > ------------------------------ > If you reply to this email, your message will be added to the > discussion below: > > http://drools.46999.n3.nabble.com/Large-number-of-rules-in-Drools-tp36303... > To start a new topic under Drools: User forum, email [hidden email]<http://user/SendEmail.jtp?type=node&node=3649201&i=1> > To unsubscribe from Drools: User forum, click here. > NAML<http://drools.46999.n3.nabble.com/template/NamlServlet.jtp?macro=... > ------------------------------ View this message in context: Re: [rules-users] Large number of rules in Drools<http://drools.46999.n3.nabble.com/Large-number-of-rules-in-Droo... Sent from the Drools: User forum mailing list archive<http://drools.46999.n3.nabble.com/Drools-User-forum-f47000.htm... Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users