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(a)juniper.net&gt;: > > 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(a)juniper.net > _____________________________________________ > Juniper Networks Inc., Computer Geek > Tel: 408.745.3182 Fax: 408.745.8905 > > _______________________________________________ > rules-users mailing list > rules-users(a)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