[jboss-jira] [JBoss JIRA] Commented: (JBRULES-2975) Cannot use constant from Enum declared in class any more

Cannot use constant from Enum declared in class any more --------------------------------------------------------- Key: JBRULES-2975 URL: https://issues.jboss.org/browse/JBRULES-2975 Project: Drools Issue Type: Bug Security Level: Public(Everyone can see) Components: drools-compiler Affects Versions: 5.2.0.M2 Reporter: Wolfgang Laun Assignee: Mark Proctor Priority: Critical Note that this was running with a build made around 2011-02-10! Given the class public class Triangle { public enum Type { INCOMPLETE, UNCLASSIFIED, EQUILATERAL, ISOSCELES, RECTANGLED, ISOSCELES_RECTANGLED, ACUTE, OBTUSE; } private int alpha; private int beta; private int gamma; private Type type; public Triangle( int alpha, int beta ) { this.alpha = alpha; this.beta = beta; this.type = Type.UNCLASSIFIED; } // getters, setter,... } and the rule rule equilateral when $t: Triangle( type == Triangle.Type.UNCLASSIFIED, alpha == beta && == gamma ) then modify( $t ){ setType( Triangle.Type.EQUILATERAL ) } end this fails with Exception in thread "main" org.drools.RuntimeDroolsException: [Error: object is not an instance of declaring class] [Near : {... Triangle.Type.UNCLASSIFIED ....}] ^ [Line: 1, Column: 1] at org.drools.rule.ReturnValueRestriction.isAllowed(ReturnValueRestriction.java:258) at org.drools.rule.VariableConstraint.isAllowed(VariableConstraint.java:103) at org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:134) at org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateAssertObject(CompositeObjectSinkAdapter.java:450) at org.drools.reteoo.CompositeObjectSinkAdapter.propagateAssertObject(CompositeObjectSinkAdapter.java:378) at org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:185) at org.drools.reteoo.EntryPointNode.assertObject(EntryPointNode.java:143) at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:332) at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:293) at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:905) at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:864) at org.drools.impl.StatefulKnowledgeSessionImpl.insert(StatefulKnowledgeSessionImpl.java:251) at rss.drools.setup.Application.insert(Application.java:141) at ex4.Main.makeFacts(Main.java:35) at rss.drools.setup.Application.execute(Application.java:83) at ex4.Main.main(Main.java:40) Caused by: [Error: object is not an instance of declaring class] [Near : {... Triangle.Type.UNCLASSIFIED ....}] ^ [Line: 1, Column: 1] at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:427) at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeAccessor(ReflectiveAccessorOptimizer.java:140) at org.mvel2.ast.ASTNode.optimize(ASTNode.java:158) at org.mvel2.ast.ASTNode.getReducedValueAccelerated(ASTNode.java:115) at org.mvel2.MVELRuntime.execute(MVELRuntime.java:87) at org.mvel2.compiler.CompiledExpression.getValue(CompiledExpression.java:125) at org.mvel2.compiler.CompiledExpression.getValue(CompiledExpression.java:118) at org.mvel2.MVEL.executeExpression(MVEL.java:954) at org.drools.base.mvel.MVELReturnValueExpression.evaluate(MVELReturnValueExpression.java:88) at org.drools.rule.ReturnValueRestriction.isAllowed(ReturnValueRestriction.java:247) ... 15 more Caused by: java.lang.IllegalArgumentException: object is not an instance of declaring class at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:616) at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getBeanProperty(ReflectiveAccessorOptimizer.java:514) at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:335) ... 24 more