[ARIES-1046] blueprintContainer.getComponentInstance causes NPE for inline beans

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Cannot Reproduce
• Component/s: Blueprint
• Assignee: Unassigned
• Reporter: Martin Lichtin
• Created: 04/Apr/13 14:14
• Updated: 15/Jun/18 10:52
• Resolved: 15/Jun/18 10:52

Description

Using the following code (more or less) as part of the init() method of a bean

Collection<BeanMetadata> allBeans = blueprintContainer.getMetadata(BeanMetadata.class);
for (BeanMetadata beanData : allBeans)

{ Object o = blueprintContainer.getComponentInstance(beanData.getId()); }

I receive a NPE:

org.osgi.service.blueprint.container.ComponentDefinitionException: Unable to initialize bean ...
at org.apache.aries.blueprint.container.BeanRecipe.runBeanProcInit(BeanRecipe.java:714)[7:org.apache.aries.blueprint.core:1.1.0]
at org.apache.aries.blueprint.container.BeanRecipe.internalCreate2(BeanRecipe.java:824)[7:org.apache.aries.blueprint.core:1.1.0]
at org.apache.aries.blueprint.container.BeanRecipe.internalCreate(BeanRecipe.java:787)[7:org.apache.aries.blueprint.core:1.1.0]
at org.apache.aries.blueprint.di.AbstractRecipe$1.call(AbstractRecipe.java:79)[7:org.apache.aries.blueprint.core:1.1.0]
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)[:1.7.0_13]
at java.util.concurrent.FutureTask.run(FutureTask.java:166)[:1.7.0_13]
at org.apache.aries.blueprint.di.AbstractRecipe.create(AbstractRecipe.java:88)[7:org.apache.aries.blueprint.core:1.1.0]
at org.apache.aries.blueprint.container.BlueprintRepository.createInstances(BlueprintRepository.java:245)[7:org.apache.aries.blueprint.core:1.1.0]
at org.apache.aries.blueprint.container.BlueprintRepository.createAll(BlueprintRepository.java:183)[7:org.apache.aries.blueprint.core:1.1.0]
at org.apache.aries.blueprint.container.BlueprintContainerImpl.instantiateEagerComponents(BlueprintContainerImpl.java:668)[7:org.apache.aries.blueprint.core:1.1.0]
at org.apache.aries.blueprint.container.BlueprintContainerImpl.doRun(BlueprintContainerImpl.java:370)[7:org.apache.aries.blueprint.core:1.1.0]
at org.apache.aries.blueprint.container.BlueprintContainerImpl.run(BlueprintContainerImpl.java:261)[7:org.apache.aries.blueprint.core:1.1.0]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)[:1.7.0_13]
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)[:1.7.0_13]
at java.util.concurrent.FutureTask.run(FutureTask.java:166)[:1.7.0_13]
at org.apache.aries.blueprint.container.ExecutorServiceWrapper.run(ExecutorServiceWrapper.java:106)[7:org.apache.aries.blueprint.core:1.1.0]
at org.apache.aries.blueprint.utils.threading.impl.DiscardableRunnable.run(DiscardableRunnable.java:48)[7:org.apache.aries.blueprint.core:1.1.0]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)[:1.7.0_13]
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)[:1.7.0_13]
at java.util.concurrent.FutureTask.run(FutureTask.java:166)[:1.7.0_13]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:178)[:1.7.0_13]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:292)[:1.7.0_13]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)[:1.7.0_13]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)[:1.7.0_13]
at java.lang.Thread.run(Thread.java:722)[:1.7.0_13]
Caused by: org.osgi.service.blueprint.container.ComponentDefinitionException: Cound not create component instance for null
at org.apache.aries.blueprint.container.BlueprintContainerImpl.getComponentInstance(BlueprintContainerImpl.java:752)[7:org.apache.aries.blueprint.core:1.1.0]
at ...
at sun.reflect.GeneratedMethodAccessor67.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)[:1.7.0_13]
at java.lang.reflect.Method.invoke(Method.java:601)[:1.7.0_13]
at org.apache.aries.blueprint.utils.ReflectionUtils.invoke(ReflectionUtils.java:297)[7:org.apache.aries.blueprint.core:1.1.0]
at org.apache.aries.blueprint.container.BeanRecipe.invoke(BeanRecipe.java:958)[7:org.apache.aries.blueprint.core:1.1.0]
at org.apache.aries.blueprint.container.BeanRecipe.runBeanProcInit(BeanRecipe.java:712)[7:org.apache.aries.blueprint.core:1.1.0]
... 24 more
Caused by: java.lang.NullPointerException
at java.util.concurrent.ConcurrentHashMap.hash(ConcurrentHashMap.java:332)[:1.7.0_13]
at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:987)[:1.7.0_13]
at org.apache.aries.blueprint.container.BlueprintRepository.getInstance(BlueprintRepository.java:93)[7:org.apache.aries.blueprint.core:1.1.0]
at org.apache.aries.blueprint.container.BlueprintRepository.createInstance(BlueprintRepository.java:228)[7:org.apache.aries.blueprint.core:1.1.0]
at org.apache.aries.blueprint.container.BlueprintRepository.create(BlueprintRepository.java:145)[7:org.apache.aries.blueprint.core:1.1.0]
at org.apache.aries.blueprint.container.BlueprintContainerImpl.getComponentInstance(BlueprintContainerImpl.java:746)[7:org.apache.aries.blueprint.core:1.1.0]
... 31 more

This happens for beans declared inline:

<bean id="a"
class="A">
<property name="p">
<bean class="B" />
</property>
</bean>

It looks as if there is no "id" (auto-)assigned to bean instance of class B.