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https://issues.apache.org/jira/browse/JENA-1258?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15642783#comment-15642783
]
Stian Soiland-Reyes commented on JENA-1258:
-------------------------------------------
Other code using {{ARQConstant}} without a {{static}} initialization look a bit
more excotic, e.g. {{org.apache.jena.riot.system.RiotLib}},
{{org.apache.jena.sdb.engine.QueryEngineSDB}},
{{org.apache.jena.sparql.algebra.AlgebraQuad}},
{{org.apache.jena.sparql.core.Var}}
> 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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