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https://issues.apache.org/jira/browse/JENA-1258?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15643652#comment-15643652
]
ASF GitHub Bot commented on JENA-1258:
--------------------------------------
Github user afs commented on the issue:
https://github.com/apache/jena/pull/189
This usage is calling into the middle of internal code.
Fixing output code seems wrong. It is better to initialize as objects get
created, not on output. This shows the root cause is somewhere else.
> Context key is null (ARQConstants.registryFunctions) via NodeFmtLib
> -------------------------------------------------------------------
>
> Key: JENA-1258
> URL: https://issues.apache.org/jira/browse/JENA-1258
> Project: Apache Jena
> Issue Type: Bug
> Components: ARQ
> Affects Versions: Jena 3.1.1
> Reporter: Stian Soiland-Reyes
>
> This small test, with no ARQ.init(), causes a problem in initializers:
> {code}
> @Test
> public void testName() throws Exception {
> Node node = NodeFactory.createLiteral("Hello world", "en");
> assertEquals("\"Hello world\"@en", NodeFmtLib.str(node));
> }
> {code}
> It fails with:
> {code}
> java.lang.ExceptionInInitializerError
> at org.apache.jena.riot.out.NodeFmtLib.<clinit>(NodeFmtLib.java:55)
> at org.apache.commons.rdf.jena.TestNodeStuff.testName(TestNodeStuff.java:15)
> 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$2.evaluate(ParentRunner.java:268)
> at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
> at
> org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
> at
> org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
> at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
> at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:678)
> at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
> at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
> Caused by: org.apache.jena.sparql.ARQException: Context key is null
> at org.apache.jena.sparql.util.Context._put(Context.java:102)
> at org.apache.jena.sparql.util.Context.set(Context.java:94)
> at
> org.apache.jena.sparql.function.FunctionRegistry.set(FunctionRegistry.java:74)
> at
> org.apache.jena.sparql.function.FunctionRegistry.init(FunctionRegistry.java:48)
> at org.apache.jena.query.ARQ.init(ARQ.java:592)
> at org.apache.jena.sparql.system.InitARQ.start(InitARQ.java:29)
> at org.apache.jena.system.JenaSystem.lambda$init$2(JenaSystem.java:119)
> at java.util.ArrayList.forEach(ArrayList.java:1249)
> at org.apache.jena.system.JenaSystem.forEach(JenaSystem.java:194)
> at org.apache.jena.system.JenaSystem.forEach(JenaSystem.java:171)
> at org.apache.jena.system.JenaSystem.init(JenaSystem.java:117)
> at org.apache.jena.sparql.ARQConstants.<clinit>(ARQConstants.java:35)
> ... 25 more
> {code}
> closer debugging reveals that it is trying to set a context with the static
> {{ARQConstants.registryFunctions}} which is still null:
> {code}
> Thread [main] (Suspended (breakpoint at line 102 in Context))
> owns: Object (id=65)
> owns: Class<T> (org.apache.jena.system.JenaSystem) (id=61)
> owns: Object (id=66)
> Context._put(Symbol, Object) line: 102
> Context.set(Symbol, Object) line: 94
> FunctionRegistry.set(Context, FunctionRegistry) line: 74
> FunctionRegistry.init() line: 48
> ARQ.init() line: 592
> InitARQ.start() line: 29
> JenaSystem.lambda$init$2(JenaSubsystemLifecycle) line: 119
> 2009221452.accept(Object) line: not available
> ArrayList<E>.forEach(Consumer<? super E>) line: 1249
> JenaSystem.forEach(Consumer<JenaSubsystemLifecycle>,
> Comparator<JenaSubsystemLifecycle>) line: 194
> JenaSystem.forEach(Consumer<JenaSubsystemLifecycle>) line: 171
> JenaSystem.init() line: 117
> ARQConstants.<clinit>() line: 35
> NodeFmtLib.<clinit>() line: 55
> TestNodeStuff.testName() line: 17
> NativeMethodAccessorImpl.invoke0(Method, Object, Object[]) line: not
> available [native method]
> NativeMethodAccessorImpl.invoke(Object, Object[]) line: 62
> DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 43
> Method.invoke(Object, Object...) line: 498
> FrameworkMethod$1.runReflectiveCall() line: 50
> FrameworkMethod$1(ReflectiveCallable).run() line: 12
> FrameworkMethod.invokeExplosively(Object, Object...) line: 47
> InvokeMethod.evaluate() line: 17
> BlockJUnit4ClassRunner(ParentRunner<T>).runLeaf(Statement, Description,
> RunNotifier) line: 325
> BlockJUnit4ClassRunner.runChild(FrameworkMethod, RunNotifier) line: 78
> BlockJUnit4ClassRunner.runChild(Object, RunNotifier) line: 57
> ParentRunner$3.run() line: 290
> ParentRunner$1.schedule(Runnable) line: 71
> BlockJUnit4ClassRunner(ParentRunner<T>).runChildren(RunNotifier) line:
> 288
> ParentRunner<T>.access$000(ParentRunner, RunNotifier) line: 58
> ParentRunner$2.evaluate() line: 268
> BlockJUnit4ClassRunner(ParentRunner<T>).run(RunNotifier) line: 363
> JUnit4TestReference.run(TestExecution) line: 86
> TestExecution.run(ITestReference[]) line: 38
> RemoteTestRunner.runTests(String[], String, TestExecution) line: 459
> RemoteTestRunner.runTests(TestExecution) line: 678
> RemoteTestRunner.run() line: 382
> RemoteTestRunner.main(String[]) line: 192
> {code}
> Workaround:
> {code}
> ARQ.init(); // or JenaSystem.init()
> {code}
> before using NodeFmtLib.
> Should NodeFactory ensure {{JenaSystem.init()}}
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