[rules-dev] setGlobal issue in StatefulSession

[tellkb]

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*****
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