[rules-users] Bug and/or confusion with collect and new rules

[Edson Tirelli]

   Dirk,

   Fixed:

http://jira.jboss.com/jira/browse/JBRULES-1410

   Fix will be included in 4.0.4 to be released in the next few days.

   Thanks for reporting and providing test case.

    []s
    Edson

2008/1/9, Edson Tirelli <tirelli at post.com>:
>
>
>     Dirk,
>
>     It is a bug that affects collect and accumulate. Working on that.
>     Firing rules is the default behavior when dynamically adding packages.
> I think mark created a configuration to change this behavior...
>
>     []s
>     Edson
>
> 2008/1/9, Dirk Bergstrom <dirk at juniper.net>:
> >
> > I have modified my application to allow adding/removing/updating rules
> > during
> > runtime.  However, when I add a new rule to the rulebase, I don't get
> > the
> > behavior I expect.
> >
> > First, as soon as I call RuleBase.addPackage (), the new rules fire (the
> > RHS code
> > runs).  Shouldn't that happen only when I call fireAllRules()?
> >
> > Second, newly added collect() rules don't collect already asserted
> > objects. New
> > non-collect rules can see the objects just fine.
> >
> > Attached is a testcase, and below is the output it produces.  Am I doing
> > something wrong, or is this a bug?  I'm running Drools 4.0.3 on JDK
> > 1.5.0.13.
> >
> > Start
> > RuleBase created
> > Adding rules about 'tom':
> > package rules;
> > import java.util.ArrayList;
> > import test.Tester.Record;
> > import test.Tester;
> > rule "Collect tom"
> > when
> > $list : ArrayList(size > 0) from collect( Record(field1 == "tom") )
> > then
> > Tester.show($list, "Collect tom");
> > end
> >
> > rule "Non collect tom"
> > when
> > $rec : Record( field1 == "tom" )
> > then
> > System.out.println("Find 'tom' " + $rec.dump());
> > end
> >
> > inserting record 1:"tom",
> > inserting record 2:"fred",
> > inserting record 3:"harry",
> > inserting record 4:"fred",
> > inserting record 5:"ed",
> > inserting record 6:"tom",
> > inserting record 7:"sreeni",
> > inserting record 8:"jill",
> > inserting record 9:"ralph",
> > inserting record 10:"tom",
> >
> > fireAllRules()
> > Find 'tom' 10:"tom",
> > 'Collect tom' collected 3 records => 1:"tom", 6:"tom", 10:"tom",
> > Find 'tom' 6:"tom",
> > Find 'tom' 1:"tom",
> >
> > adding rules about 'fred':
> > package morerules;
> > import java.util.ArrayList;
> > import test.Tester.Record;
> > import test.Tester;
> > rule "Collect fred"
> > when
> > $list : ArrayList(size > 0) from collect( Record(field1 == "fred") )
> > then
> > Tester.show($list, "Collect fred");
> > end
> >
> > rule "Non collect fred"
> > when
> > $rec : Record( field1 == "fred" )
> > then
> > System.out.println("Find 'fred' " + $rec.dump());
> > end
> >
> > ==> Why do the new rules fire when added?
> > Find 'fred' 4:"fred",
> > Find 'fred' 2:"fred",
> > 'Collect fred' collected 0 records =>
> > ==> Why doesn't the collect rule collect? The non-collect rule works.
> > fireAllRules()
> >
> > Changing record 3 to 'fred'
> > fireAllRules()
> > Find 'fred' 3:"fred",
> > 'Collect fred' collected 1 records => 3:"fred",
> > ==> Why does the collect rule not see the other two 'fred' records?
> >
> > --
> > Dirk Bergstrom               dirk at juniper.net
> > _____________________________________________
> > Juniper Networks Inc.,          Computer Geek
> > Tel: 408.745.3182           Fax: 408.745.8905
> >
> > _______________________________________________
> > rules-users mailing list
> > rules-users at lists.jboss.org
> > https://lists.jboss.org/mailman/listinfo/rules-users
> >
> >
> >
>
>
> --
>   Edson Tirelli
>   JBoss Drools Core Development
>   Office: +55 11 3529-6000
>   Mobile: +55 11 9287-5646
>   JBoss, a division of Red Hat @ www.jboss.com




-- 
  Edson Tirelli
  JBoss Drools Core Development
  Office: +55 11 3529-6000
  Mobile: +55 11 9287-5646
  JBoss, a division of Red Hat @ www.jboss.com
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