From: tellkb <tellkb(a)gmail.com&gt; Subject: [rules-users] setGlobal issue in StatefulSession To: rules-users(a)lists.jboss.org Date: Monday, May 4, 2009, 12:35 PM Hi there, I want to set setGlobal in working memory at run time based on derived class, e.g. DerivedOne or DerivedTwo. But it throws following error: Illegal class for global. Expected [org.comp.app.bean.Base], found [org.comp.app.bean.DerivedOne]. It should automatically resolve the derived class. Please let me know if I'm doing something wrong. I'd appreciate your help. Thanks, -KB Here are the classed I'm using in my test project: class abstract Base () { public void init( StatefulSession workingMemory ) { this.workingMemory = workingMemory; workingMemory.setGlobal("app", this); } public void logMe() { System.out.println("From Derived BASE..."); } } class DerivedOne() extends Base{ public void runRules( Object obj) { ObjOne obj1 = (ObjOne)obj workingMemory.insert(obj1); workingMemory.fireAllRules(); workingMemory.dispose(); } public void logMe() { System.out.println("From Derived ONE..."); } } class DerivedTwo() extends Base{ public void runRules( Object obj) { ObjTwo obj2 = (ObjTwo)obj workingMemory.insert(obj2); workingMemory.fireAllRules(); workingMemory.dispose(); } public void logMe() { System.out.println("From Derived ONE..."); } } class Caller() { RuleBase ruleBase = ruleBaseFactory.open(docRules); workingMemory = ruleBase.newStatefulSession(); if (sub==1) { der1 = new DerivedOne(); der1.init(workingMemory); der1.runRules(); } else if (sub==1) { der2 = new DerivedTwo(); der2.init(workingMemory); der2.runRules(); } } //********DRL FILE***** package com.sample import com.sample.app.RuleCaller.Message; global com.sample.app.Base app; rule "using a static function" when eval( true ) then System.out.println( "Message from Rule." ); app.logMe(); end //********DRL FILE***** -- View this message in context: http://www.nabble.com/setGlobal-issue-in-StatefulSession-tp23373008p23373... 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

From: Mere Huzoor <tellkb(a)gmail.com&gt; Subject: Re: [rules-users] setGlobal issue in StatefulSession To: greg_barton(a)yahoo.com, "Rules Users List" <rules-users(a)lists.jboss.org&gt; Date: Monday, May 4, 2009, 1:39 PM Please ignore the syntax in this posting. Yes, it is suppose to be like this: public abstract class Base { } I would appreciate if you can explain how I can achieve the polymorphism behavior in drools (explained in my example). FYI I'm using version 4.0.7. Thanks! On Mon, May 4, 2009 at 10:57 AM, Greg Barton <greg_barton(a)yahoo.com&gt; wrote: > > Well, we can start out with the fact that this is improper java syntax: > > class abstract Base () {} > > The () is not in a class declaration. Does this code compile for you? :) > > --- On Mon, 5/4/09, tellkb <tellkb(a)gmail.com&gt; wrote: > > > From: tellkb <tellkb(a)gmail.com&gt; > > Subject: [rules-users] setGlobal issue in StatefulSession > > To: rules-users(a)lists.jboss.org > > Date: Monday, May 4, 2009, 12:35 PM > > Hi there, > > > > I want to set setGlobal in working memory at run time based > > on derived > > class, e.g. DerivedOne or DerivedTwo. But it throws > > following error: > > > > Illegal class for global. Expected > > [org.comp.app.bean.Base], found > > [org.comp.app.bean.DerivedOne]. > > > > > > It should automatically resolve the derived class. Please > > let me know if I'm > > doing something wrong. I'd appreciate your help. > > > > > > Thanks, > > -KB > > > > Here are the classed I'm using in my test project: > > > > > > class abstract Base () { > > > > public void init( StatefulSession workingMemory ) { > > this.workingMemory = workingMemory; > > workingMemory.setGlobal("app", this); > > } > > public void logMe() { > > System.out.println("From Derived BASE..."); > > } > > } > > > > class DerivedOne() extends Base{ > > public void runRules( Object obj) { > > ObjOne obj1 = (ObjOne)obj > > workingMemory.insert(obj1); > > workingMemory.fireAllRules(); > > workingMemory.dispose(); > > } > > public void logMe() { > > System.out.println("From Derived ONE..."); > > } > > } > > > > class DerivedTwo() extends Base{ > > public void runRules( Object obj) { > > ObjTwo obj2 = (ObjTwo)obj > > workingMemory.insert(obj2); > > workingMemory.fireAllRules(); > > workingMemory.dispose(); > > } > > public void logMe() { > > System.out.println("From Derived ONE..."); > > } > > } > > > > > > class Caller() { > > > > RuleBase ruleBase = ruleBaseFactory.open(docRules); > > workingMemory = ruleBase.newStatefulSession(); > > > > if (sub==1) { > > der1 = new DerivedOne(); > > der1.init(workingMemory); > > der1.runRules(); > > } > > else if (sub==1) { > > der2 = new DerivedTwo(); > > der2.init(workingMemory); > > der2.runRules(); > > } > > } > > > > //********DRL FILE***** > > package com.sample > > > > import com.sample.app.RuleCaller.Message; > > > > global com.sample.app.Base app; > > > > rule "using a static function" > > when > > eval( true ) > > then > > System.out.println( "Message from Rule." ); > > app.logMe(); > > end > > //********DRL FILE***** > > -- > > View this message in context: > > > http://www.nabble.com/setGlobal-issue-in-StatefulSession-tp23373008p23373... > > 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 > > > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users >