[jboss-jira] [JBoss JIRA] Created: (JBRULES-389) Use of "exists" causes a ClassCastException

[Edson Tirelli (JIRA)]

Use of "exists" causes a ClassCastException
-------------------------------------------

                 Key: JBRULES-389
                 URL: http://jira.jboss.com/jira/browse/JBRULES-389
             Project: JBoss Rules
          Issue Type: Bug
      Security Level: Public (Everyone can see)
          Components: Reteoo
    Affects Versions: 3.0.3
            Reporter: Edson Tirelli
         Assigned To: Edson Tirelli
             Fix For: 3.0.4


Using exists with later bound variables will cause ClassCastException.

package com.sample

import org.drools.Cheese
import org.drools.Person

global java.util.List results

rule "Exists with Bindings"	
	when
		exists Cheese()
		c: Cheese( $type : type );
		p: Person( likes == $type );
	then 
		results.add( $type );		
end

Results in:

java.lang.ClassCastException: org.drools.reteoo.InitialFactImpl
	at org.drools.base.org.drools.Cheese$getType.getValue(Unknown Source)
	at org.drools.base.ClassFieldExtractor.getValue(ClassFieldExtractor.java:79)
	at org.drools.rule.Declaration.getValue(Declaration.java:156)
	at org.drools.rule.BoundVariableConstraint.isAllowed(BoundVariableConstraint.java:82)
	at org.drools.common.BetaNodeBinder.isAllowed(BetaNodeBinder.java:63)
	at org.drools.reteoo.TupleSource.attemptJoin(TupleSource.java:99)
	at org.drools.reteoo.JoinNode.assertObject(JoinNode.java:165)
	at org.drools.reteoo.ObjectSource.propagateAssertObject(ObjectSource.java:119)
	at org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:158)
	at org.drools.reteoo.Rete.assertObject(Rete.java:120)
	at org.drools.reteoo.ReteooRuleBase.assertObject(ReteooRuleBase.java:180)
	at org.drools.reteoo.ReteooWorkingMemory.doAssertObject(ReteooWorkingMemory.java:69)
	at org.drools.common.AbstractWorkingMemory.assertObject(AbstractWorkingMemory.java:538)
	at org.drools.common.AbstractWorkingMemory.assertObject(AbstractWorkingMemory.java:374)
	at org.drools.integrationtests.IntegrationCases.testExistsWithBinding(IntegrationCases.java:2608)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at junit.framework.TestCase.runTest(TestCase.java:154)
	at junit.framework.TestCase.runBare(TestCase.java:127)
	at junit.framework.TestResult$1.protect(TestResult.java:106)
	at junit.framework.TestResult.runProtected(TestResult.java:124)
	at junit.framework.TestResult.run(TestResult.java:109)
	at junit.framework.TestCase.run(TestCase.java:118)
	at junit.framework.TestSuite.runTest(TestSuite.java:208)
	at junit.framework.TestSuite.run(TestSuite.java:203)
	at org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:128)
	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)



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