[jboss-jira] [JBoss JIRA] Created: (JBRULES-1096) NPE when using "exists" with "from"

[Edson Tirelli (JIRA)]

NPE when using "exists" with "from"
-----------------------------------

                 Key: JBRULES-1096
                 URL: http://jira.jboss.com/jira/browse/JBRULES-1096
             Project: JBoss Rules
          Issue Type: Bug
      Security Level: Public (Everyone can see)
          Components: Drl Parser/Builder, Reteoo
    Affects Versions:  4.0.0.GA
            Reporter: Edson Tirelli
         Assigned To: Edson Tirelli
             Fix For: 4.0.1


NPE when adding a package with the following rule to a rulebase:

package org.drools;

global java.util.List results;

rule "exists with from"
	when
		Cheesery( $cheeses : cheeses ) 
		exists( Cheese( type == "stilton" ) from $cheeses )
	then
		results.add( "true" );
end


java.lang.NullPointerException
	at org.drools.reteoo.builder.BuildUtils.createBetaNodeConstraint(BuildUtils.java:168)
	at org.drools.reteoo.builder.GroupElementBuilder$ExistsBuilder.build(GroupElementBuilder.java:306)
	at org.drools.reteoo.builder.GroupElementBuilder.build(GroupElementBuilder.java:70)
	at org.drools.reteoo.builder.GroupElementBuilder$AndBuilder.build(GroupElementBuilder.java:112)
	at org.drools.reteoo.builder.GroupElementBuilder.build(GroupElementBuilder.java:70)
	at org.drools.reteoo.builder.ReteooRuleBuilder.addSubRule(ReteooRuleBuilder.java:136)
	at org.drools.reteoo.builder.ReteooRuleBuilder.addRule(ReteooRuleBuilder.java:109)
	at org.drools.reteoo.ReteooBuilder.addRule(ReteooBuilder.java:116)
	at org.drools.reteoo.ReteooRuleBase.addRule(ReteooRuleBase.java:262)
	at org.drools.common.AbstractRuleBase.addPackage(AbstractRuleBase.java:337)
	at org.drools.integrationtests.FirstOrderLogicTest.testExistsWithFrom(FirstOrderLogicTest.java:717)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:585)
	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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