Morning folks, just FYI:
I accidentally bound an interface to an abstract class (forgot to
un-abstract it after some refactoring) and got an NPE in
BindingBuilderImpl$FactoryProxy:
com.google.inject.ProvisionException: Error while locating instance
bound to info.cathdb.funcnet_0_1.sessiondb.Repository
for member at
info.cathdb.funcnet_0_1.sessiondb.hib3impl.RepositoryTest._repository(RepositoryTest.java:1)
at
com.google.inject.InjectorImpl$SingleFieldInjector.inject(InjectorImpl.java:486)
at com.google.inject.InjectorImpl.injectMembers(InjectorImpl.java:674)
at com.google.inject.InjectorImpl$8.call(InjectorImpl.java:682)
at com.google.inject.InjectorImpl$8.call(InjectorImpl.java:681)
at com.google.inject.InjectorImpl.callInContext(InjectorImpl.java:747)
at com.google.inject.InjectorImpl.injectMembers(InjectorImpl.java:680)
at
info.cathdb.funcnet_0_1.sessiondb.hib3impl.RepositoryTest.setUp(RepositoryTest.java:45)
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
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at
org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:27)
at
org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:73)
at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:46)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:180)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:41)
at org.junit.runners.ParentRunner$1.evaluate(ParentRunner.java:173)
at
org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at
org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
at org.junit.runners.ParentRunner.run(ParentRunner.java:220)
at
org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:45)
at
org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
Caused by: java.lang.NullPointerException
at
com.google.inject.BindingBuilderImpl$FactoryProxy.get(BindingBuilderImpl.java:299)
at
com.google.inject.InjectorImpl$SingleFieldInjector.inject(InjectorImpl.java:473)
... 29 more
Caused some headscratching -- especially since I'm used to Guice's
(normally) incredibly informative errors.
Anyway, this might be fixed by now, just thought I'd bring it to your
attention if it isn't.
The offending line was just a simple bind-to:
bind( Repository.class ).to( HibernateRepository.class );
where HibernateRepository was the accidentally abstract one. The line
that caused the error was an injectMembers(this) on a class with
@Inject private Repository _repository;
Cheers,
Andrew.
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