Bug 439994 - Using OverridingGuiceModule and accessing shared.ui in own Activator.start() leads to NPE
Summary: Using OverridingGuiceModule and accessing shared.ui in own Activator.start() ...
Status: NEW
Alias: None
Product: TMF
Classification: Modeling
Component: Xtext (show other bugs)
Version: 2.6.1   Edit
Hardware: PC Mac OS X
: P3 normal (vote)
Target Milestone: ---   Edit
Assignee: Project Inbox CLA
QA Contact:
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2014-07-21 08:27 EDT by Moritz Eysholdt CLA
Modified: 2014-07-21 08:27 EDT (History)
0 users

See Also:

Attachments
Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.
Description Moritz Eysholdt CLA 2014-07-21 08:27:42 EDT 
If you
- make use of extension-point org.eclipse.xtext.ui.shared.overridingGuiceModule
- acces org.eclipse.xtext.ui.shared in your own languages Activator.start()

You'll get a NPE in org.eclipse.xtext.ui.shared.Access.InternalProvider.get() because it's called *while* injector-create of ui.shared is in progress. 

In other words, it's called as a sub-routine of org.eclipse.xtext.ui.shared.internal.Activator.start(BundleContext) and org.eclipse.xtext.ui.shared.internal.Activator.injector has not been initialized yet so that org.eclipse.xtext.ui.shared.internal.Activator.getInjector() will return null.

1) Error in custom provider, java.lang.NullPointerException
  at org.eclipse.xtext.service.MethodBasedModule.configure(MethodBasedModule.java:73)
  while locating org.eclipse.xtext.ui.shared.contribution.ISharedStateContributionRegistry
    for parameter 0 at org.eclipse.xtext.ui.shared.Access$InternalProviderForOptionalContribution.inject(Unknown Source)
  at org.eclipse.xtext.service.MethodBasedModule.configure(MethodBasedModule.java:73)

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 mylanguge1.Activator.start(Activator.java:46)
	at org.eclipse.osgi.internal.framework.BundleContextImpl$3.run(BundleContextImpl.java:771)
	at org.eclipse.osgi.internal.framework.BundleContextImpl$3.run(BundleContextImpl.java:1)
	at java.security.AccessController.doPrivileged(Native Method)
	at org.eclipse.osgi.internal.framework.BundleContextImpl.startActivator(BundleContextImpl.java:764)
	at org.eclipse.osgi.internal.framework.BundleContextImpl.start(BundleContextImpl.java:721)
	at org.eclipse.osgi.internal.framework.EquinoxBundle.startWorker0(EquinoxBundle.java:936)
	at org.eclipse.osgi.internal.framework.EquinoxBundle$EquinoxModule.startWorker(EquinoxBundle.java:319)
	at org.eclipse.osgi.container.Module.doStart(Module.java:571)
	at org.eclipse.osgi.container.Module.start(Module.java:439)
	at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:454)
	at org.eclipse.osgi.internal.hooks.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:107)
	at org.eclipse.osgi.internal.loader.classpath.ClasspathManager.findLocalClass(ClasspathManager.java:531)
	at org.eclipse.osgi.internal.loader.ModuleClassLoader.findLocalClass(ModuleClassLoader.java:324)
	at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:311)
	at org.eclipse.osgi.internal.loader.sources.SingleSourcePackage.loadClass(SingleSourcePackage.java:36)
	at org.eclipse.osgi.internal.loader.sources.MultiSourcePackage.loadClass(MultiSourcePackage.java:32)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:382)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:336)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:328)
	at org.eclipse.osgi.internal.loader.ModuleClassLoader.loadClass(ModuleClassLoader.java:160)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	at mylanguage.ui.Activator.<clinit>(Activator.java:39)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:408)
	at java.lang.Class.newInstance(Class.java:433)
	at org.eclipse.osgi.internal.framework.BundleContextImpl.loadBundleActivator(BundleContextImpl.java:755)
	at org.eclipse.osgi.internal.framework.BundleContextImpl.start(BundleContextImpl.java:706)
	at org.eclipse.osgi.internal.framework.EquinoxBundle.startWorker0(EquinoxBundle.java:936)
	at org.eclipse.osgi.internal.framework.EquinoxBundle$EquinoxModule.startWorker(EquinoxBundle.java:319)
	at org.eclipse.osgi.container.Module.doStart(Module.java:571)
	at org.eclipse.osgi.container.Module.start(Module.java:439)
	at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:454)
	at org.eclipse.osgi.internal.hooks.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:107)
	at org.eclipse.osgi.internal.loader.classpath.ClasspathManager.findLocalClass(ClasspathManager.java:531)
	at org.eclipse.osgi.internal.loader.ModuleClassLoader.findLocalClass(ModuleClassLoader.java:324)
	at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:311)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:386)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:336)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:328)
	at org.eclipse.osgi.internal.loader.ModuleClassLoader.loadClass(ModuleClassLoader.java:160)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	at org.eclipse.osgi.internal.framework.EquinoxBundle.loadClass(EquinoxBundle.java:568)
	at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:174)
	at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:905)
	at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243)
	at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:55)
	at org.eclipse.xtext.ui.shared.internal.Activator.initializeInjector(Activator.java:62)
	at org.eclipse.xtext.ui.shared.internal.Activator.start(Activator.java:113)
	at org.eclipse.osgi.internal.framework.BundleContextImpl$3.run(BundleContextImpl.java:771)
	at org.eclipse.osgi.internal.framework.BundleContextImpl$3.run(BundleContextImpl.java:1)
	at java.security.AccessController.doPrivileged(Native Method)
	at org.eclipse.osgi.internal.framework.BundleContextImpl.startActivator(BundleContextImpl.java:764)
	at org.eclipse.osgi.internal.framework.BundleContextImpl.start(BundleContextImpl.java:721)
	at org.eclipse.osgi.internal.framework.EquinoxBundle.startWorker0(EquinoxBundle.java:936)
	at org.eclipse.osgi.internal.framework.EquinoxBundle$EquinoxModule.startWorker(EquinoxBundle.java:319)
	at org.eclipse.osgi.container.Module.doStart(Module.java:571)
	at org.eclipse.osgi.container.Module.start(Module.java:439)
	at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:454)
	at org.eclipse.osgi.internal.hooks.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:107)
	at org.eclipse.osgi.internal.loader.classpath.ClasspathManager.findLocalClass(ClasspathManager.java:531)
	at org.eclipse.osgi.internal.loader.ModuleClassLoader.findLocalClass(ModuleClassLoader.java:324)
	at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:311)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:386)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:336)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:328)
	at org.eclipse.osgi.internal.loader.ModuleClassLoader.loadClass(ModuleClassLoader.java:160)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	at org.eclipse.osgi.internal.framework.EquinoxBundle.loadClass(EquinoxBundle.java:568)
	at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:174)
	at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:905)
	at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243)
	at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:55)
	at org.eclipse.jdt.internal.core.JavaModelManager$CompilationParticipants$1.run(JavaModelManager.java:337)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
	at org.eclipse.jdt.internal.core.JavaModelManager$CompilationParticipants.getCompilationParticipants(JavaModelManager.java:332)
	at org.eclipse.jdt.internal.core.builder.JavaBuilder.initializeBuilder(JavaBuilder.java:589)
	at org.eclipse.jdt.internal.core.builder.JavaBuilder.build(JavaBuilder.java:169)
	at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:734)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:206)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:246)
	at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:299)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:302)
	at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:358)
	at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:381)
	at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:143)
	at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:241)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
Caused by: java.lang.NullPointerException
	at org.eclipse.xtext.ui.shared.Access$InternalProvider.get(Access.java:46)
	at com.google.inject.internal.InternalFactoryToProviderAdapter.get(InternalFactoryToProviderAdapter.java:40)
	at com.google.inject.internal.SingleParameterInjector.inject(SingleParameterInjector.java:38)
	at com.google.inject.internal.SingleParameterInjector.getAll(SingleParameterInjector.java:62)
	at com.google.inject.internal.SingleMethodInjector.inject(SingleMethodInjector.java:83)
	at com.google.inject.internal.MembersInjectorImpl.injectMembers(MembersInjectorImpl.java:110)
	at com.google.inject.internal.MembersInjectorImpl$1.call(MembersInjectorImpl.java:75)
	at com.google.inject.internal.MembersInjectorImpl$1.call(MembersInjectorImpl.java:73)
	at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1024)
	at com.google.inject.internal.MembersInjectorImpl.injectAndNotify(MembersInjectorImpl.java:73)
	at com.google.inject.internal.Initializer$InjectableReference.get(Initializer.java:147)
	at com.google.inject.internal.Initializer.injectAll(Initializer.java:92)
	at com.google.inject.internal.InternalInjectorCreator.injectDynamically(InternalInjectorCreator.java:173)
	... 96 more