[rules-users] Interface implementation not working..
Vijay K Pandey
VPandey at mdes.ms.gov
Thu Dec 3 00:43:02 EST 2009
Problem is with your interface modifier declaration. Your modifier is "default" , convert that to "public" and it should be fine.
Change interface Generalized
TO
public interface Generalized
You don't have to set "public" modifier to the "Display" method - by default interface method visibility is "public".
Vijay
________________________________
From: rules-users-bounces at lists.jboss.org [mailto:rules-users-bounces at lists.jboss.org] On Behalf Of Deepak Jambhekar
Sent: Wednesday, December 02, 2009 9:10 PM
To: Rules Users List
Subject: Re: [rules-users] Interface implementation not working..
I am still getting the same error even after making that method as public... ??
Thanks
Deepak Jambhekar
-----rules-users-bounces at lists.jboss.org wrote: -----
To: Rules Users List <rules-users at lists.jboss.org>
From: CK <chrisckc at gmail.com>
Sent by: rules-users-bounces at lists.jboss.org
Date: 12/02/2009 10:28PM
Subject: Re: [rules-users] Interface implementation not working..
Try changing your BOM_TRANSACTION_DETAILS Display() method access to public and see if it works.
Currently, you have it as "void Display()" in your BOM_TRANSACTION_DETAILS method declaration. Change it to "public void Display()". It might solve your problem.
No need to change method declaration in the interface as it's correct.
-Chris
On Dec 2, 2009, at 1:35 AM, Deepak Jambhekar wrote:
Hi....
I have created a rule which is as below
rule "myrule"
dialect "mvel"
when
tr : BOM_TRANSACTION_DETAILS( country == "CH" )
then
tr.setCarrierName( "orange" );
tr.Display();
end
And the Model class is defined as below...
interface Generalized
{
void Display();
}
public class BOM_TRANSACTION_DETAILS implements Generalized {
getter and setter.....
void Display()
{
.....
}
}
Now when I run this rule, it is giving me the following exception . Can any one please help me why this exception is coming....? and also when I removed the Display() from interface Generalized the code works fine...
So is this because of Interface?? Can we use interface for defining Models..??
org.drools.runtime.rule.ConsequenceException : [Error: tr.Display(): Class org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer can not access a member of class com.drools.icas.transaction.Generalized with modifiers "public abstract"]
[Near : {... Unknown ....}]
^
[Line: 1, Column: 0]
at org.drools.runtime.rule.impl.DefaultConsequenceExceptionHandler.handleException( DefaultConsequenceExceptionHandler.java:23 )
at org.drools.common.DefaultAgenda.fireActivation( DefaultAgenda.java:943 )
at org.drools.common.DefaultAgenda.fireNextItem( DefaultAgenda.java:885 )
at org.drools.common.DefaultAgenda.fireAllRules( DefaultAgenda.java:1082 )
at org.drools.common.AbstractWorkingMemory.fireAllRules( AbstractWorkingMemory.java:682 )
at org.drools.common.AbstractWorkingMemory.fireAllRules( AbstractWorkingMemory.java:649 )
at org.drools.impl.StatefulKnowledgeSessionImpl.fireAllRules( StatefulKnowledgeSessionImpl.java:177 )
at com.drools.icas.transaction.DemoTest.main( DemoTest.java:92 )
Caused by: [Error: tr.Display(): Class org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer can not access a member of class com.drools.icas.transaction.Generalized with modifiers "public abstract"]
[Near : {... Unknown ....}]
^
[Line: 1, Column: 0]
at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain( ReflectiveAccessorOptimizer.java:382 )
at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeAccessor( ReflectiveAccessorOptimizer.java:140 )
at org.mvel2.ast.ASTNode.getReducedValueAccelerated( ASTNode.java:137 )
at org.mvel2.MVELRuntime.execute( MVELRuntime.java:91 )
at org.mvel2.compiler.CompiledExpression.getValue( CompiledExpression.java:101 )
at org.mvel2.MVEL.executeExpression( MVEL.java:968 )
at org.drools.base.mvel.MVELConsequence.evaluate( MVELConsequence.java:89 )
at org.drools.common.DefaultAgenda.fireActivation( DefaultAgenda.java:934 )
... 6 more
Caused by: java.lang.IllegalAccessException : Class org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer can not access a member of class com.drools.icas.transaction.Generalized with modifiers "public abstract"
at sun.reflect.Reflection.ensureMemberAccess( Reflection.java:65 )
at java.lang.reflect.Method.invoke( Method.java:583 )
at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod( ReflectiveAccessorOptimizer.java:936 )
at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain( ReflectiveAccessorOptimizer.java:321 )
... 13 more
Thanks....
Deepak Jambhekar
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