[rules-users] Eval0Invoker : java.lang.NullPointerException

[Venkat]

Manstis, can you please tell me what is wrong with this rule 


rule "User Name validation check rule"
	when
		$serviceContext : ServiceContext()
		RegistrationDeregistrationPersistence( eval( validateUserName(
$serviceContext ) <= -1 ) ) // condition
	then
		throw new Error("USER ID is invalid"); // consequence
end


I am getting this RuntimeException



java.lang.RuntimeException: Rule Compilation error : [Rule name='User Name
validation check rule']

com/ge/energy/drms/external/integration/service/impl/Rule_User_Name_validation_check_rule.java
(9:1042) : The method validateUserName(ServiceContext) is undefined for the
type Rule_User_Name_validation_check_rule


	at
com.ge.energy.drms.external.integration.service.impl.PANDeviceRegistrationServiceImpl.createKnowledgeBase(PANDeviceRegistrationServiceImpl.java:142)
	at
com.ge.energy.drms.external.integration.service.impl.PANDeviceRegistrationServiceImpl.provisionPANDevice(PANDeviceRegistrationServiceImpl.java:77)
	at
com.ge.energy.drms.external.integration.service.impl.test.ProvisionPanDeviceRequestValidationTest.testCustomerAndServiceContext(ProvisionPanDeviceRequestValidationTest.java:39)
	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:597)
	at junit.framework.TestCase.runTest(TestCase.java:168)
	at junit.framework.TestCase.runBare(TestCase.java:134)
	at junit.framework.TestResult$1.protect(TestResult.java:110)
	at junit.framework.TestResult.runProtected(TestResult.java:128)
	at junit.framework.TestResult.run(TestResult.java:113)
	at junit.framework.TestCase.run(TestCase.java:124)
	at junit.framework.TestSuite.runTest(TestSuite.java:232)
	at junit.framework.TestSuite.run(TestSuite.java:227)
	at
org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:83)
	at
org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:49)
	at
org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
	at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
	at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
	at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
	at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)


Thanks,
Venkat.

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