[NIFI-5633] EL - allDelineatedValues can throw ArrayIndexOutOfBoundsException

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 1.8.0
• Component/s: Extensions
• Assignee: Pierre Villard
• Reporter: Pierre Villard
• Created: 25/Sep/18 12:28
• Updated: 25/Sep/18 18:08
• Resolved: 25/Sep/18 18:08

Description

When running this unit test:

    @Test
    public void testAllDelineatedValuesCount() {
        final Map<String, String> attributes = new HashMap<>();

        final String query = "${allDelineatedValues('${test}', '/'):count()}";

        attributes.put("test", "/");
        assertEquals(ResultType.WHOLE_NUMBER, Query.getResultType(query));
        assertEquals("0", Query.evaluateExpressions(query, attributes, null));
    }

This will throw:

java.lang.ArrayIndexOutOfBoundsException: 0
	at org.apache.nifi.attribute.expression.language.evaluation.selection.DelineatedAttributeEvaluator.evaluate(DelineatedAttributeEvaluator.java:65)
	at org.apache.nifi.attribute.expression.language.evaluation.reduce.CountEvaluator.evaluate(CountEvaluator.java:38)
	at org.apache.nifi.attribute.expression.language.evaluation.selection.MappingEvaluator.evaluate(MappingEvaluator.java:38)
	at org.apache.nifi.attribute.expression.language.Query.evaluate(Query.java:363)
	at org.apache.nifi.attribute.expression.language.Query.evaluateExpression(Query.java:204)
	at org.apache.nifi.attribute.expression.language.CompiledExpression.evaluate(CompiledExpression.java:58)
	at org.apache.nifi.attribute.expression.language.StandardPreparedQuery.evaluateExpressions(StandardPreparedQuery.java:51)
	at org.apache.nifi.attribute.expression.language.StandardPreparedQuery.evaluateExpressions(StandardPreparedQuery.java:64)
	at org.apache.nifi.attribute.expression.language.Query.evaluateExpressions(Query.java:223)
	at org.apache.nifi.attribute.expression.language.TestQuery.testAllDelineatedValuesCount(TestQuery.java:1033)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
	at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)

Issue Links

• links to: GitHub Pull Request #3029