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Description:
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I have a chain of decorators for a managed bean.
If they are enabled, the container tries to proxy the managed bean, although it uses the default @Dependent scope. When creating the proxy, it ignores the injected constructor with parameters and tries to use the default constructor with no parameters instead. As a result, this fails with an InstantiationException:
{code}
Exception in thread "main" org.jboss.weld.exceptions.WeldException: WELD-000033 Could not instantiate client proxy for org.jboss.weld.bean.proxy.DecorationHelper@62fa5ff3
at org.jboss.weld.bean.proxy.DecorationHelper.createProxy(DecorationHelper.java:118)
at org.jboss.weld.bean.proxy.DecorationHelper.getNextDelegate(DecorationHelper.java:101)
at org.jboss.weld.injection.producer.AbstractDecoratorApplyingInstantiator.getOuterDelegate(AbstractDecoratorApplyingInstantiator.java:75)
at org.jboss.weld.injection.producer.SubclassDecoratorApplyingInstantiator.applyDecorators(SubclassDecoratorApplyingInstantiator.java:45)
at org.jboss.weld.injection.producer.AbstractDecoratorApplyingInstantiator.newInstance(AbstractDecoratorApplyingInstantiator.java:65)
at org.jboss.weld.injection.producer.BasicInjectionTarget.produce(BasicInjectionTarget.java:86)
at org.jboss.weld.injection.producer.BeanInjectionTarget.produce(BeanInjectionTarget.java:173)
at org.jboss.weld.bean.ManagedBean.create(ManagedBean.java:157)
at org.jboss.weld.context.unbound.DependentContextImpl.get(DependentContextImpl.java:69)
at org.jboss.weld.manager.BeanManagerImpl.getReference(BeanManagerImpl.java:718)
at org.jboss.weld.manager.BeanManagerImpl.getReference(BeanManagerImpl.java:774)
at org.jboss.weld.injection.FieldInjectionPoint.inject(FieldInjectionPoint.java:92)
at org.jboss.weld.util.Beans.injectBoundFields(Beans.java:372)
at org.jboss.weld.util.Beans.injectFieldsAndInitializers(Beans.java:381)
at org.jboss.weld.injection.producer.DefaultInjector.inject(DefaultInjector.java:72)
at org.jboss.weld.injection.producer.ResourceInjector.inject(ResourceInjector.java:60)
at org.jboss.weld.injection.producer.DefaultInjector$1.proceed(DefaultInjector.java:66)
at org.jboss.weld.injection.InjectionContextImpl.run(InjectionContextImpl.java:48)
at org.jboss.weld.injection.producer.DefaultInjector.inject(DefaultInjector.java:64)
at org.jboss.weld.injection.producer.BasicInjectionTarget.inject(BasicInjectionTarget.java:91)
at org.jboss.weld.bean.ManagedBean.create(ManagedBean.java:158)
at org.jboss.weld.context.AbstractContext.get(AbstractContext.java:103)
at org.jboss.weld.manager.BeanManagerImpl.getReference(BeanManagerImpl.java:718)
at org.jboss.weld.event.ObserverMethodImpl.getReceiver(ObserverMethodImpl.java:302)
at org.jboss.weld.event.ObserverMethodImpl.getReceiverIfExists(ObserverMethodImpl.java:295)
at org.jboss.weld.event.ObserverMethodImpl.sendEvent(ObserverMethodImpl.java:259)
at org.jboss.weld.event.ObserverMethodImpl.notify(ObserverMethodImpl.java:240)
at org.jboss.weld.event.ObserverNotifier.notifyObserver(ObserverNotifier.java:171)
at org.jboss.weld.event.ObserverNotifier.notifyObserver(ObserverNotifier.java:167)
at org.jboss.weld.event.ObserverNotifier.notifyObservers(ObserverNotifier.java:121)
at org.jboss.weld.event.ObserverNotifier.fireEvent(ObserverNotifier.java:114)
at org.jboss.weld.event.EventImpl.fire(EventImpl.java:84)
at org.jboss.weld.environment.se.Weld.initialize(Weld.java:153)
at org.jboss.weld.environment.se.StartMain.go(StartMain.java:41)
at org.jboss.weld.environment.se.StartMain.main(StartMain.java:52)
Caused by: java.lang.InstantiationException: com.company.mavenproject1.StandardPrinter$Proxy$_$$_Weld$Proxy$
at java.lang.Class.newInstance0(Class.java:342)
at java.lang.Class.newInstance(Class.java:310)
at org.jboss.weld.security.NewInstanceAction.run(NewInstanceAction.java:33)
at java.security.AccessController.doPrivileged(Native Method)
at org.jboss.weld.bean.proxy.DecorationHelper.createProxy(DecorationHelper.java:109)
... 34 more
{code}
If I disable the chain of decorators
or refactor the managed bean to use a private @Inject field
,
then
the example works as designed.
I
will attach a ZIP file with the sample code.
I
assess this as a critical bug because I don't want to rely on private field injection.
I have attached a ZIP file with the sample code.
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