Hello, Please help me to implement following rule in drool. I could not find a way to iterate two collection using accumulate or collect in LHS. public Male{ int age; //other fields } public Female{ int age; //other fields } public City{ private List<Male> maleList; private List<Female> femaleList; } #Rule to get all Male whose age != any of female's rule "Get Unlucky Male" when city : City() maleList : ArrayList() from collect ( Male( his age = any of Female's age from city.femaleList ) from city.maleList) //consequence end -- View this message in context: http://www.nabble.com/Iterating-two-collection-in-LHS-tp21796713p21796713... 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

Thanks Edson. Is there way to find City() where if least one unlucky male is found using current object structure. Edson Tirelli-3 wrote: > > You should really insert your males and females into your working > memory > instead of having them as nested lists only. Anyway: > > rule "unlucky male" > where > $c : City() > $m : Male( $age : age ) from $c.maleList > not( Female( age ==$age ) from $c.femaleList ) > then > // $m is unlucky, no female with the same age > end > > []s > Edson > > > 2009/2/2 techy <techluver007(a)gmail.com&gt; > >> >> Hello, >> >> Please help me to implement following rule in drool. I could not find a >> way >> to iterate two collection using accumulate or collect in LHS. >> >> public Male{ >> int age; >> //other fields >> >> } >> >> public Female{ >> int age; >> //other fields >> >> } >> public City{ >> >> private List<Male> maleList; >> private List<Female> femaleList; >> >> } >> >> #Rule to get all Male whose age != any of female's >> rule "Get Unlucky Male" >> when >> city : City() >> maleList : ArrayList() from collect ( Male( his age = any of >> Female's age from city.femaleList ) from city.maleList) >> //consequence >> end >> -- >> View this message in context: >> http://www.nabble.com/Iterating-two-collection-in-LHS-tp21796713p21796713... >> 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 >> > > > > -- > Edson Tirelli > JBoss Drools Core Development > JBoss, a division of Red Hat @ www.jboss.com > > _______________________________________________ > 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/Iterating-two-collection-in-LHS-tp21796713p21801175... 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