Re: [rules-users] Collect and hibernate

Using Drools 5.0.1 I get the same results with the below rule. I leave the System.out.println in, and the rule executes the number of times for the number of items that should be loaded from the hibernate, but each time the $o is still null. the insert seems to be ignored, audit shows no record of it, but I assume insert(null) is ignored by drools Edson Tirelli-4 wrote: > > Did you tried this? > > when > $m : MessageAsEvent(uuid=="mesC:7") > $o : MessageAsEvent(uuid=="mesC:7", id!=$m.id) from > hibernateSession.createQuery("from MessageAsEvent where > serial=?").setParameter(0,$m.serial).list() > then > insert($o) > end > > In any case, collect should work too. Which version of drools are you > using? > > []s > Edson > > 2009/10/29 richarda <richard.ambridge(a)gmail.com&gt; > >> >> Hi again, >> >> I wish to have a rule that when an Event has a certain uuid then load >> into >> working memory all other events that have been received for this unit... >> >> So I write the rule: >> >> rule "Repeating" >> >> when >> $m : MessageAsEvent(uuid=="mesC:7") >> $others : LinkedList() from collect ( >> MessageAsEvent(uuid=="mesC:7", id!=$m.id) >> from hibernateSession.createQuery("from >> MessageAsEvent where >> serial=?").setParameter(0,$m.serial).list() >> ) >> then >> System.out.println("Gathering m="+$m+" data="+$others); >> end >> >> >> Audit log shows: (wish cut and paste would work from Eclipse audit view) >> >> <activationId>Repeating [131, 14]</activationId> >> <rule>Repeating FAN</rule> >> <declarations>$others=[MessageAsEvent:[124] uuid=mesC:7 serial=serial123 >> count=7, MessageAsEvent:[94] uuid=mesC:7 serial=serial123 count=7, >> MessageAsEvent:[64] uuid=mesC:7 serial=serial123 count=7, >> MessageAsEvent:[118] uuid=mesC:7 serial=serial123 count=7, >> MessageAsEvent:[112] uuid=mesC:7 serial=serial123 count=7, >> MessageAsEvent:[106] uuid=mesC:7 serial=serial123 count=7, >> MessageAsEvent:[100] uuid=mesC:7 serial=serial123 count=7, >> MessageAsEvent:[88] uuid=mesC:7 serial=serial123 count=7, >> MessageAsEvent:[82] uuid=mesC:7 serial=serial123 count=7, >> MessageAsEvent:[76] uuid=mesC:7 serial=serial123 count=7, >> MessageAsEvent:[70] uuid=mesC:7 serial=serial123 count=7, >> MessageAsEvent:[58] uuid=mesC:7 serial=serial123 count=7, >> MessageAsEvent:[52] uuid=mesC:7 serial=serial123 count=7, >> MessageAsEvent:[46] uuid=mesC:7 serial=serial123 count=7, >> MessageAsEvent:[40] uuid=mesC:7 serial=serial123 count=7, >> MessageAsEvent:[34] uuid=mesC:7 serial=serial123 count=7](131); >> $m=MessageAsEvent:[130] uuid=mesC:7 serial=serial123 >> count=7(14)</declarations> >> <ruleFlowGroup>Gathering</ruleFlowGroup> >> >> >> >> So, you can see that the rule fired with $others having all the data, >> and >> $m being the main uuid >> >> >> but the output of the rule is: >> Gathering m=MessageAsEvent:[130] uuid=mesC:7 serial=serial123 count=7 >> data=null >> >> so, the $others has been translated to a null. >> >> I'm trying to copy the Expert example: >> >> import java.util.LinkedList; >> >> rule "Send a message to all mothers" >> when >> $town : Town( name == 'Paris' ) >> $mothers : LinkedList() >> from collect( Person( gender == 'F', children > 0 ) >> from $town.getPeople() >> ) >> then >> # send a message to all mothers >> end >> >> which indicates that $mothers will be available in the RHS >> >> for reference, the audit log shows when the rule fires: >> >> >> <org.drools.audit.event.ActivationLogEvent> >> <type>6</type> >> <activationId>Repeating [-1, 14]</activationId> >> <rule>Repeating FAN</rule> >> <declarations>$m=MessageAsEvent:[130] uuid=mesC:7 serial=serial123 >> count=7(14)</declarations> >> <ruleFlowGroup>Gathering</ruleFlowGroup> >> >> >> What am I doing wrong? >> I basically want all the MessageAsEvent added to working memory, so later >> other rules will do work on all the events. >> >> Cheers >> Ric >> >> -- >> View this message in context: >> http://www.nabble.com/Collect-and-hibernate-tp26112042p26112042.html >> 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 by 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/Collect-and-hibernate-tp26112042p26113182.html 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