(But, if you still experience the bug with the latest code from Git, please reopen the bug or create a new one!) sam
On Fri, Oct 21, 2011 at 1:33 PM, Sam Berlin <[email protected]> wrote: > This looks like the bug fixed by > http://code.google.com/p/google-guice/source/detail?r=6b7e7187bd074d3f2df9b04e17fa01e7592f295c > (issue http://code.google.com/p/google-guice/issues/detail?id=627). > > It seems to be a super old bug that's been present at least since Guice 2 > and possibly before. The test added in the fix should explain what causes > it. > > sam > > > On Fri, Oct 21, 2011 at 1:08 PM, Michael Burton <[email protected]> wrote: > >> A user of RoboGuice ran into the following error awhile back. As best we >> can tell, it appears this might be a bug in Guice3? Can anyone explain what >> might be the issue if we're doing anything wrong? >> >> Here's the code: >> >> import com.google.inject.AbstractModule; >> import com.google.inject.Guice; >> import com.google.inject.Inject; >> import com.google.inject.Provider; >> import com.google.inject.TypeLiteral; >> import com.google.inject.matcher.Matchers; >> import com.google.inject.spi.TypeEncounter; >> import com.google.inject.spi.TypeListener; >> >> public class GuiceTest { >> >> public static void main(String[] args) { >> TestApp testApp = new TestApp(); >> Guice.createInjector(new MyModule1(testApp), new MyModule2(testApp)); >> } >> >> private static class BaseApp { >> } >> >> >> // Extends BaseApp >> private static class TestApp extends BaseApp { >> } >> >> >> >> private static class MyModule1 extends AbstractModule { >> >> private final BaseApp app; >> >> public MyModule1(BaseApp app) { >> this.app = app; >> } >> >> @Override >> protected void configure() { >> bind(BaseApp.class).toInstance(app); >> bindListener(Matchers.any(), new MyListener()); >> requestStaticInjection(SomeOtherClass.class); >> } >> } >> >> private static class MyModule2 extends AbstractModule { >> >> private final TestApp app; >> >> public MyModule2(TestApp app) { >> this.app = app; >> } >> >> // Does nothing other than binding app to TestApp, which is a binding >> that's never used >> @Override >> protected void configure() { >> bind(TestApp.class).toInstance(app); >> } >> } >> >> // Just an empty listener >> private static class MyListener implements TypeListener { >> public <I> void hear(TypeLiteral<I> iTypeLiteral, TypeEncounter<I> >> iTypeEncounter) { >> } >> } >> >> private static class SomeOtherClass { >> >> @Inject static BaseApp app; >> >> } >> } >> >> >> >> >> When you compile and run, you'll get the following error: >> >> $ javac -cp >> /Users/mike/.m2/repository/javax/inject/javax.inject/1/javax.inject-1.jar:/Users/mike/.m2/repository/com/google/inject/guice/3.0/guice-3.0-no_aop.jar:/Users/mike/.m2/repository/com/google/code/findbugs/jsr305/1.3.9/jsr305-1.3.9.jar >> GuiceTest.java >> $ java -cp >> /Users/mike/.m2/repository/javax/inject/javax.inject/1/javax.inject-1.jar:/Users/mike/.m2/repository/com/google/inject/guice/3.0/guice-3.0-no_aop.jar:/Users/mike/.m2/repository/com/google/code/findbugs/jsr305/1.3.9/jsr305-1.3.9.jar:. >> GuiceTest >> >> Exception in thread "main" com.google.inject.CreationException: Guice >> creation errors: >> >> 1) Error in custom provider, java.lang.NullPointerException >> at GuiceTest$MyModule1.configure(GuiceTest.java:37) >> while locating GuiceTest$BaseApp >> for field at GuiceTest$SomeOtherClass.app(Unknown Source) >> >> 1 error >> at >> com.google.inject.internal.Errors.throwCreationExceptionIfErrorsExist(Errors.java:435) >> at >> com.google.inject.internal.InternalInjectorCreator.injectDynamically(InternalInjectorCreator.java:175) >> at >> com.google.inject.internal.InternalInjectorCreator.build(InternalInjectorCreator.java:109) >> at com.google.inject.Guice.createInjector(Guice.java:95) >> at com.google.inject.Guice.createInjector(Guice.java:72) >> at com.google.inject.Guice.createInjector(Guice.java:62) >> at GuiceTest.main(GuiceTest.java:14) >> Caused by: java.lang.NullPointerException >> at >> com.google.inject.internal.Initializer$InjectableReference.get(Initializer.java:147) >> at com.google.inject.internal.ConstantFactory.get(ConstantFactory.java:35) >> at >> com.google.inject.internal.ProviderToInternalFactoryAdapter$1.call(ProviderToInternalFactoryAdapter.java:46) >> at >> com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1031) >> at >> com.google.inject.internal.ProviderToInternalFactoryAdapter.get(ProviderToInternalFactoryAdapter.java:40) >> at com.google.inject.Scopes$1$1.get(Scopes.java:65) >> at >> com.google.inject.internal.InternalFactoryToProviderAdapter.get(InternalFactoryToProviderAdapter.java:40) >> at >> com.google.inject.internal.SingleFieldInjector.inject(SingleFieldInjector.java:53) >> at >> com.google.inject.internal.InjectionRequestProcessor$StaticInjection$1.call(InjectionRequestProcessor.java:116) >> at >> com.google.inject.internal.InjectionRequestProcessor$StaticInjection$1.call(InjectionRequestProcessor.java:110) >> at >> com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1024) >> at >> com.google.inject.internal.InjectionRequestProcessor$StaticInjection.injectMembers(InjectionRequestProcessor.java:110) >> at >> com.google.inject.internal.InjectionRequestProcessor.injectMembers(InjectionRequestProcessor.java:78) >> at >> com.google.inject.internal.InternalInjectorCreator.injectDynamically(InternalInjectorCreator.java:170) >> ... 5 more >> >> >> Cheers, >> Mike >> >> -- >> You received this message because you are subscribed to the Google Groups >> "google-guice" group. >> To view this discussion on the web visit >> https://groups.google.com/d/msg/google-guice/-/CxXJN4nQwCsJ. >> To post to this group, send email to [email protected]. >> To unsubscribe from this group, send email to >> [email protected]. >> For more options, visit this group at >> http://groups.google.com/group/google-guice?hl=en. >> > > -- You received this message because you are subscribed to the Google Groups "google-guice" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-guice?hl=en.
