J Michael Dean wrote: I think I was not clear in my note. I used dynamic facts with Drools 4.07 but am migrating to Drools 5, where there is no longer a second argument to the insert method. My POJOs do have property change listeners. We have deprecated the insert method in favour of an attribute of a type declaration for propertychangesupport, this will be in the CR. Mark Here is an example rule that activates but never apparently fires: rule "Detect insulin on" dialect "java" when decision : GlucoseDecision(currentInsulinDripRate > 0) decisionState : GlucoseDecisionState( insulinOn == false ) then decisionState.setInsulinOn(true); end The relevant method that is called on the RHS: public void setInsulinOn(boolean insulinOn) { boolean oldValue = this.isInsulinOn(); this.insulinOn = insulinOn; firePropertyChange("insulinOn", oldValue, insulinOn); } The eventual call is to fireRules which then calls executeRules in a callback. Previously, I had a Boolean argument to the insert statements and all the code worked with the old RuleBase, RuleAgent objects. But since changing to KnowledgeSession, the rules do not appear to fire. Here are the relevant methods: public void executeRules(WorkingEnvironmentCallback callback) { StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession(); callback.initEnvironment(ksession); ksession.fireAllRules(); ksession.dispose(); } public void fireRules(final GlucoseDecision glucoseDecision, finalGlucoseDecisionState decisionState) { rulesEngine.executeRules(new WorkingEnvironmentCallback() { public void initEnvironment(StatefulKnowledgeSession workingMemory) { workingMemory.insert(glucoseDecision); workingMemory.insert(decisionState); } }); } Message: 2 Date: Wed, 11 Feb 2009 10:26:06 -0500 From: Edson Tirelli <tirelli(a)post.com&gt; Subject: Re: [rules-users] Shadow facts To: Rules Users List <rules-users(a)lists.jboss.org&gt; Message-ID: <e6dd5ba30902110726t2b09ee9dtdc7e85ed4217f80a(a)mail.gmail.com&gt; Content-Type: text/plain; charset="iso-8859-1" Dean, There are two unrelated things in here... the boolean flag for dynamic facts means your fact supports the property change listeners and you don't need to call modify() when you change an attribute. ShadowFacts are a complete different thing that should be mostly transparent to users. If you can provide an example, it will be easier to help you. []s Edson 2009/2/11 J Michael Dean <mdean77(a)comcast.net&gt; I am migrating from 4.07 to 5 and my previous DRL file does not function correctly; I previousliy inserted facts with the dynamic Boolean set true. I understand that this is no longer done because shadow facts are "not needed" in Drools 5, but is it necessary to do anything different in the RHS when modifying facts? My fact POJOs have a method for adding text to themselves. I believe my rules are not working properly because nothing is being modified - only the initial activation set fires and then nothing happens. Restated, the documentation talks about how to "avoid" shadow facts in Drools 4.07 - are the restrictions in this part of the docs necessary in Drools 5? Thanks. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ------------------------------ _______________________________________________ rules-users mailing listrules-users@lists.jboss.orghttps://lists.jboss.org/mailman/listinfo/rules-users _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

Sorry to be dense. The JIRA indicates: Add a tag for facts with property change support: declare MyFact @propertyChangeSupport end Where does this go? Is this a Java annotation or an annotation that should go into the rules? - Mike Dean, I just committed the changes into trunk to allow support for that. Revision #25246 in trunk. https://jira.jboss.org/jira/browse/JBRULES-1969 So instead of using a parameter in the insert method, just annotate the types for which you want to use property change support. []s Edson 2009/2/11 Mark Proctor <mproctor(a)codehaus.org&gt; > J Michael Dean wrote: > > I think I was not clear in my note. I used dynamic facts with Drools 4.07 > but am migrating to Drools 5, where there is no longer a second argument > to > the insert method. My POJOs do have property change listeners. > > We have deprecated the insert method in favour of an attribute of a type > declaration for propertychangesupport, this will be in the CR. > > Mark > > > Here is an example rule that activates but never apparently fires: -- View this message in context: http://www.nabble.com/Shadow-facts-tp21955953p21988081.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

Using snapshot from yesterday so presume I have the revision. The following DRL file dies a horrible death, being unable to be compiled. If I comment out the tags then it works. In the rules editor, the word "declare" is not highlighted either. I must be misunderstanding something simple. package glucose.decision.rules import glucose.decision.object.GlucoseDecision; import glucose.decision.object.GlucoseDecisionState; declare GlucoseDecision @propertyChangeSupport end declare GlucoseDecisionState @propertyChangeSupport end > > Add a tag for facts with property change support: > > declare MyFact > @propertyChangeSupport > end > > Dean, > > I just committed the changes into trunk to allow support for that. > Revision #25246 in trunk. > > https://jira.jboss.org/jira/browse/JBRULES-1969 > > So instead of using a parameter in the insert method, just annotate the > types for which you want to use property change support. > > []s > Edson -- View this message in context: http://www.nabble.com/Shadow-facts-tp21955953p22018705.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

I have two classes, ClassA and ClassB. ClassB inherits from ClassA. I have a need to write a rule that only matches instances of ClassA without matching instances of ClassB. How I can I do that? Thanks Kent Symanzik _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users