Stian Soiland-Reyes created JENA-1258:
-----------------------------------------
Summary: 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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