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                                            Change By:
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                                        <td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0px; border-collapse: collapse; padding: 0 0 10px 0"> <span class="diffcontext">h2.&nbsp;Non&nbsp;public&nbsp;interface&nbsp;producer<br /><br />With&nbsp;the&nbsp;following:<br /><br />{code}<br />/*&nbsp;package-private&nbsp;*/&nbsp;interface&nbsp;NonPublicInterface&nbsp;{<br />}<br /><br />@Produces<br />@ApplicationScoped<br />NonPublicInterface&nbsp;producer()&nbsp;{<br />}<br />{code}<br /><br />With&nbsp;Weld&nbsp;SE,&nbsp;the&nbsp;following&nbsp;exception&nbsp;is&nbsp;thrown:<br />{code}<br />Caused&nbsp;by:&nbsp;org.jboss.weld.exceptions.WeldException:&nbsp;WELD-001524:&nbsp;Unable&nbsp;to&nbsp;load&nbsp;proxy&nbsp;class&nbsp;for&nbsp;bean&nbsp;Producer&nbsp;Method&nbsp;[NonPublicInterface]&nbsp;with&nbsp;qualifiers&nbsp;[@Any&nbsp;@Default]&nbsp;declared&nbsp;as&nbsp;[[BackedAnnotatedMethod]&nbsp;@Produces&nbsp;@ApplicationScoped&nbsp;producer()]&nbsp;with&nbsp;class&nbsp;class&nbsp;java.lang.Object&nbsp;using&nbsp;classloader&nbsp;sun.misc.Launcher$AppClassLoader@5ce345c2<br />Caused&nbsp;by:&nbsp;java.lang.RuntimeException:&nbsp;java.lang.IllegalAccessError:&nbsp;class&nbsp;org.jboss.weld.proxies.NonPublicInterface$1654568476$Proxy$_$$_WeldClientProxy&nbsp;cannot&nbsp;access&nbsp;its&nbsp;superinterface&nbsp;NonPublicInterface<br />Caused&nbsp;by:&nbsp;java.lang.IllegalAccessError:&nbsp;class&nbsp;org.jboss.weld.proxies.NonPublicInterface$1654568476$Proxy$_$$_WeldClientProxy&nbsp;cannot&nbsp;access&nbsp;its&nbsp;superinterface&nbsp;NonPublicInterface<br />{code}<br /><br />*For&nbsp;injection&nbsp;points&nbsp;within&nbsp;the&nbsp;same&nbsp;package.*&nbsp;Note&nbsp;that&nbsp;works&nbsp;fine&nbsp;with&nbsp;OpenWebBeans.<br /><br />h2.&nbsp;Private&nbsp;nested&nbsp;class<br /><br />With&nbsp;the&nbsp;following:<br />{code}<br />import&nbsp;com.codahale.metrics.MetricRegistry;<br /><br />@Produces<br />@ApplicationScoped<br />MetricRegistry&nbsp;registry&nbsp;=&nbsp;new&nbsp;MetricRegistry();<br />{code}<br /><br />With&nbsp;Weld&nbsp;OSGi&nbsp;(in&nbsp;Karaf&nbsp;with&nbsp;PAX&nbsp;CDI)</span> <span class="diffaddedchars" style="background-color:#ddfade;">&nbsp;and&nbsp;JDK&nbsp;7&nbsp;(HotSpot&nbsp;build&nbsp;1.7.0_80-b15)</span> <span class="diffcontext">,&nbsp;the&nbsp;following&nbsp;exception&nbsp;is&nbsp;thrown:<br />{code}<br />Caused&nbsp;by:&nbsp;com.google.common.util.concurrent.ExecutionError:&nbsp;java.lang.IllegalAccessError:&nbsp;tried&nbsp;to&nbsp;access&nbsp;class&nbsp;com.codahale.metrics.MetricRegistry$MetricBuilder&nbsp;from&nbsp;class&nbsp;com.codahale.metrics.MetricRegistry$Proxy$_$$_WeldClientProxy<br /> at&nbsp;com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2256)<br /> at&nbsp;com.google.common.cache.LocalCache.get(LocalCache.java:3990)<br /> at&nbsp;com.google.common.cache.LocalCache.getOrLoad(LocalCache.java:3994)<br /> at&nbsp;com.google.common.cache.LocalCache$LocalLoadingCache.get(LocalCache.java:4878)<br /> at&nbsp;org.jboss.weld.util.cache.LoadingCacheUtils.getCacheValue(LoadingCacheUtils.java:49)<br /> at&nbsp;org.jboss.weld.util.cache.LoadingCacheUtils.getCastCacheValue(LoadingCacheUtils.java:74)<br /> at&nbsp;org.jboss.weld.bean.proxy.ClientProxyProvider.getClientProxy(ClientProxyProvider.java:222)<br /> at&nbsp;org.jboss.weld.manager.BeanManagerImpl.getReference(BeanManagerImpl.java:755)<br /> at&nbsp;org.jboss.weld.manager.BeanManagerImpl.getInjectableReference(BeanManagerImpl.java:861)<br /> at&nbsp;org.jboss.weld.injection.ParameterInjectionPointImpl.getValueToInject(ParameterInjectionPointImpl.java:76)<br /> at&nbsp;org.jboss.weld.injection.ConstructorInjectionPoint.getParameterValues(ConstructorInjectionPoint.java:150)<br /> at&nbsp;org.jboss.weld.injection.ConstructorInjectionPoint.newInstance(ConstructorInjectionPoint.java:75)<br /> at&nbsp;org.jboss.weld.injection.producer.AbstractInstantiator.newInstance(AbstractInstantiator.java:28)<br /> at&nbsp;org.jboss.weld.injection.producer.BasicInjectionTarget.produce(BasicInjectionTarget.java:116)<br /> at&nbsp;org.jboss.weld.injection.producer.BeanInjectionTarget.produce(BeanInjectionTarget.java:179)<br /> at&nbsp;org.jboss.weld.bean.ManagedBean.create(ManagedBean.java:158)<br /> at&nbsp;org.jboss.weld.context.AbstractContext.get(AbstractContext.java:96)<br /> at&nbsp;org.jboss.weld.bean.ContextualInstanceStrategy$DefaultContextualInstanceStrategy.get(ContextualInstanceStrategy.java:101)<br /> at&nbsp;org.jboss.weld.bean.ContextualInstanceStrategy$ApplicationScopedContextualInstanceStrategy.get(ContextualInstanceStrategy.java:141)<br /> at&nbsp;org.jboss.weld.bean.ContextualInstance.get(ContextualInstance.java:50)<br /> at&nbsp;org.jboss.weld.manager.BeanManagerImpl.getReference(BeanManagerImpl.java:761)<br /> at&nbsp;org.jboss.weld.manager.BeanManagerImpl.getReference(BeanManagerImpl.java:784)<br /> at&nbsp;org.jboss.weld.util.ForwardingBeanManager.getReference(ForwardingBeanManager.java:61)<br /> at&nbsp;org.jboss.weld.bean.builtin.BeanManagerProxy.getReference(BeanManagerProxy.java:85)<br /> at&nbsp;io.astefanutti.metrics.cdi.MetricsExtension.getBeanInstance(MetricsExtension.java:123)<br /> at&nbsp;io.astefanutti.metrics.cdi.MetricsExtension.configuration(MetricsExtension.java:99)<br /> at&nbsp;sun.reflect.NativeMethodAccessorImpl.invoke0(Native&nbsp;Method)<br /> at&nbsp;sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)<br /> at&nbsp;sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)<br /> at&nbsp;java.lang.reflect.Method.invoke(Method.java:606)<br /> at&nbsp;org.jboss.weld.injection.StaticMethodInjectionPoint.invoke(StaticMethodInjectionPoint.java:88)<br /> ...&nbsp;44&nbsp;more<br />Caused&nbsp;by:&nbsp;java.lang.IllegalAccessError:&nbsp;tried&nbsp;to&nbsp;access&nbsp;class&nbsp;com.codahale.metrics.MetricRegistry$MetricBuilder&nbsp;from&nbsp;class&nbsp;com.codahale.metrics.MetricRegistry$Proxy$_$$_WeldClientProxy<br /> at&nbsp;com.codahale.metrics.MetricRegistry$Proxy$_$$_WeldClientProxy.&lt;clinit&gt;(Unknown&nbsp;Source)<br /> at&nbsp;sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native&nbsp;Method)<br /> at&nbsp;sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)<br /> at&nbsp;sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)<br /> at&nbsp;java.lang.reflect.Constructor.newInstance(Constructor.java:526)<br /> at&nbsp;java.lang.Class.newInstance(Class.java:383)<br /> at&nbsp;org.jboss.weld.bean.proxy.DefaultProxyInstantiator.newInstance(DefaultProxyInstantiator.java:43)<br /> at&nbsp;org.jboss.weld.bean.proxy.ProxyFactory.run(ProxyFactory.java:307)<br /> at&nbsp;org.jboss.weld.bean.proxy.ProxyFactory.create(ProxyFactory.java:299)<br /> at&nbsp;org.jboss.weld.bean.proxy.ClientProxyFactory.create(ClientProxyFactory.java:83)<br /> at&nbsp;org.jboss.weld.bean.proxy.ClientProxyProvider.createClientProxy(ClientProxyProvider.java:198)<br /> at&nbsp;org.jboss.weld.bean.proxy.ClientProxyProvider.createClientProxy(ClientProxyProvider.java:188)<br /> at&nbsp;org.jboss.weld.bean.proxy.ClientProxyProvider.access$100(ClientProxyProvider.java:46)<br /> at&nbsp;org.jboss.weld.bean.proxy.ClientProxyProvider$CreateClientProxy.load(ClientProxyProvider.java:57)<br /> at&nbsp;org.jboss.weld.bean.proxy.ClientProxyProvider$CreateClientProxy.load(ClientProxyProvider.java:53)<br /> at&nbsp;com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3589)<br /> at&nbsp;com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2374)<br /> at&nbsp;com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2337)<br /> at&nbsp;com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2252)<br /> ...&nbsp;74&nbsp;more<br />{code}<br />Because&nbsp;{{MetricRegistry}}&nbsp;contains&nbsp;a&nbsp;private&nbsp;nested&nbsp;class.<br /><br /></span> <span class="diffaddedchars" style="background-color:#ddfade;">The&nbsp;same&nbsp;test&nbsp;run&nbsp;with&nbsp;JDK&nbsp;8&nbsp;(HotSpot&nbsp;build&nbsp;1.8.0_66-b17)&nbsp;throws&nbsp;a&nbsp;different&nbsp;exception:<br />{code}<br />org.jboss.weld.exceptions.WeldException:&nbsp;WELD-001524:&nbsp;Unable&nbsp;to&nbsp;load&nbsp;proxy&nbsp;class&nbsp;for&nbsp;bean&nbsp;Producer&nbsp;Field&nbsp;[MetricRegistry]&nbsp;with&nbsp;qualifiers&nbsp;[@Default&nbsp;@Named&nbsp;@Any]&nbsp;declared&nbsp;as&nbsp;[[BackedAnnotatedField]&nbsp;@Produces&nbsp;@ApplicationScoped&nbsp;@Named&nbsp;org.apache.camel.cdi.sample.metrics.MetricsCdiConfig.registry]&nbsp;with&nbsp;class&nbsp;class&nbsp;com.codahale.metrics.MetricRegistry&nbsp;using&nbsp;classloader&nbsp;BundleClassLoader{bundle=[DelegatingBundle:&nbsp;[io.astefanutti.camel.cdi.camel-cdi-sample-metrics&nbsp;[15],&nbsp;org.ops4j.pax.cdi.weld&nbsp;[87],&nbsp;org.jboss.weld.osgi-bundle&nbsp;[73],&nbsp;io.astefanutti.metrics.cdi.metrics-cdi&nbsp;[16],&nbsp;io.astefanutti.camel.cdi.camel-cdi&nbsp;[14]]],parent=null}<br /> at&nbsp;org.jboss.weld.bean.proxy.ProxyFactory.getProxyClass(ProxyFactory.java:364)<br /> at&nbsp;org.jboss.weld.bean.proxy.ProxyFactory.run(ProxyFactory.java:327)<br /> at&nbsp;org.jboss.weld.bean.proxy.ProxyFactory.create(ProxyFactory.java:319)<br /> at&nbsp;org.jboss.weld.bean.proxy.ClientProxyFactory.create(ClientProxyFactory.java:83)<br /> at&nbsp;org.jboss.weld.bean.proxy.ClientProxyProvider.createClientProxy(ClientProxyProvider.java:198)<br /> at&nbsp;org.jboss.weld.bean.proxy.ClientProxyProvider.createClientProxy(ClientProxyProvider.java:188)<br /> at&nbsp;org.jboss.weld.bean.proxy.ClientProxyProvider.access$100(ClientProxyProvider.java:46)<br /> at&nbsp;org.jboss.weld.bean.proxy.ClientProxyProvider$CreateClientProxy.load(ClientProxyProvider.java:57)<br /> at&nbsp;org.jboss.weld.bean.proxy.ClientProxyProvider$CreateClientProxy.load(ClientProxyProvider.java:53)<br /> at&nbsp;com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3589)<br /> at&nbsp;com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2374)<br /> at&nbsp;com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2337)<br /> at&nbsp;com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2252)<br /> at&nbsp;com.google.common.cache.LocalCache.get(LocalCache.java:3990)<br /> at&nbsp;com.google.common.cache.LocalCache.getOrLoad(LocalCache.java:3994)<br /> at&nbsp;com.google.common.cache.LocalCache$LocalLoadingCache.get(LocalCache.java:4878)<br /> at&nbsp;org.jboss.weld.util.cache.LoadingCacheUtils.getCacheValue(LoadingCacheUtils.java:49)<br /> at&nbsp;org.jboss.weld.util.cache.LoadingCacheUtils.getCastCacheValue(LoadingCacheUtils.java:74)<br /> at&nbsp;org.jboss.weld.bean.proxy.ClientProxyProvider.getClientProxy(ClientProxyProvider.java:222)<br /> at&nbsp;org.jboss.weld.manager.BeanManagerImpl.getReference(BeanManagerImpl.java:736)<br /> at&nbsp;org.jboss.weld.manager.BeanManagerImpl.getInjectableReference(BeanManagerImpl.java:842)<br /> at&nbsp;org.jboss.weld.injection.FieldInjectionPoint.inject(FieldInjectionPoint.java:92)<br /> at&nbsp;org.jboss.weld.util.Beans.injectBoundFields(Beans.java:378)<br /> at&nbsp;org.jboss.weld.util.Beans.injectFieldsAndInitializers(Beans.java:389)<br /> at&nbsp;org.jboss.weld.injection.producer.ResourceInjector$1.proceed(ResourceInjector.java:70)<br /> at&nbsp;org.jboss.weld.injection.InjectionContextImpl.run(InjectionContextImpl.java:48)<br /> at&nbsp;org.jboss.weld.injection.producer.ResourceInjector.inject(ResourceInjector.java:72)<br /> at&nbsp;org.jboss.weld.injection.producer.BasicInjectionTarget.inject(BasicInjectionTarget.java:121)<br /> at&nbsp;org.jboss.weld.bean.ManagedBean.create(ManagedBean.java:159)<br /> at&nbsp;org.jboss.weld.context.unbound.DependentContextImpl.get(DependentContextImpl.java:70)<br /> at&nbsp;org.jboss.weld.bean.ContextualInstanceStrategy$DefaultContextualInstanceStrategy.get(ContextualInstanceStrategy.java:101)<br /> at&nbsp;org.jboss.weld.bean.ContextualInstance.get(ContextualInstance.java:50)<br /> at&nbsp;org.jboss.weld.manager.BeanManagerImpl.getReference(BeanManagerImpl.java:742)<br /> at&nbsp;org.jboss.weld.manager.BeanManagerImpl.getReference(BeanManagerImpl.java:765)<br /> at&nbsp;org.jboss.weld.util.ForwardingBeanManager.getReference(ForwardingBeanManager.java:61)<br /> at&nbsp;org.jboss.weld.bean.builtin.BeanManagerProxy.getReference(BeanManagerProxy.java:85)<br /> at&nbsp;io.astefanutti.metrics.cdi.MetricsExtension.getBeanInstance(MetricsExtension.java:123)<br /> at&nbsp;io.astefanutti.metrics.cdi.MetricsExtension.configuration(MetricsExtension.java:99)<br /> at&nbsp;sun.reflect.NativeMethodAccessorImpl.invoke0(Native&nbsp;Method)<br /> at&nbsp;sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)<br /> at&nbsp;sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)<br /> at&nbsp;java.lang.reflect.Method.invoke(Method.java:497)<br /> at&nbsp;org.jboss.weld.injection.StaticMethodInjectionPoint.invoke(StaticMethodInjectionPoint.java:88)<br /> at&nbsp;org.jboss.weld.injection.MethodInvocationStrategy$SpecialParamPlusBeanManagerStrategy.invoke(MethodInvocationStrategy.java:144)<br /> at&nbsp;org.jboss.weld.event.ObserverMethodImpl.sendEvent(ObserverMethodImpl.java:309)<br /> at&nbsp;org.jboss.weld.event.ExtensionObserverMethodImpl.sendEvent(ExtensionObserverMethodImpl.java:124)<br /> at&nbsp;org.jboss.weld.event.ObserverMethodImpl.sendEvent(ObserverMethodImpl.java:287)<br /> at&nbsp;org.jboss.weld.event.ObserverMethodImpl.notify(ObserverMethodImpl.java:265)<br /> at&nbsp;org.jboss.weld.event.ObserverNotifier.notifySyncObservers(ObserverNotifier.java:271)<br /> at&nbsp;org.jboss.weld.event.ObserverNotifier.notify(ObserverNotifier.java:260)<br /> at&nbsp;org.jboss.weld.event.ObserverNotifier.fireEvent(ObserverNotifier.java:154)<br /> at&nbsp;org.jboss.weld.event.ObserverNotifier.fireEvent(ObserverNotifier.java:148)<br /> at&nbsp;org.jboss.weld.bootstrap.events.AbstractContainerEvent.fire(AbstractContainerEvent.java:53)<br /> at&nbsp;org.jboss.weld.bootstrap.events.AbstractDeploymentContainerEvent.fire(AbstractDeploymentContainerEvent.java:35)<br /> at&nbsp;org.jboss.weld.bootstrap.events.AfterDeploymentValidationImpl.fire(AfterDeploymentValidationImpl.java:28)<br /> at&nbsp;org.jboss.weld.bootstrap.WeldStartup.validateBeans(WeldStartup.java:450)<br /> at&nbsp;org.jboss.weld.bootstrap.WeldBootstrap.validateBeans(WeldBootstrap.java:90)<br /> at&nbsp;org.ops4j.pax.cdi.weld.impl.WeldCdiContainer.createBeanManager(WeldCdiContainer.java:115)<br /> at&nbsp;org.ops4j.pax.cdi.weld.impl.WeldCdiContainer.access$000(WeldCdiContainer.java:55)<br /> at&nbsp;org.ops4j.pax.cdi.weld.impl.WeldCdiContainer$1.call(WeldCdiContainer.java:95)<br /> at&nbsp;org.ops4j.pax.cdi.weld.impl.WeldCdiContainer$1.call(WeldCdiContainer.java:91)<br /> at&nbsp;org.ops4j.pax.swissbox.core.ContextClassLoaderUtils.doWithClassLoader(ContextClassLoaderUtils.java:60)<br /> at&nbsp;org.ops4j.pax.cdi.weld.impl.WeldCdiContainer.doStart(WeldCdiContainer.java:91)<br /> at&nbsp;org.ops4j.pax.cdi.spi.AbstractCdiContainer.start(AbstractCdiContainer.java:87)<br /> at&nbsp;org.ops4j.pax.cdi.extender.impl.CdiExtender.createContainer(CdiExtender.java:184)<br /> at&nbsp;org.ops4j.pax.cdi.extender.impl.CdiExtender.addingBundle(CdiExtender.java:133)<br /> at&nbsp;org.ops4j.pax.cdi.extender.impl.CdiExtender.addingBundle(CdiExtender.java:64)<br /> at&nbsp;org.osgi.util.tracker.BundleTracker$Tracked.customizerAdding(BundleTracker.java:469)<br /> at&nbsp;org.osgi.util.tracker.BundleTracker$Tracked.customizerAdding(BundleTracker.java:415)<br /> at&nbsp;org.osgi.util.tracker.AbstractTracked.trackAdding(AbstractTracked.java:256)<br /> at&nbsp;org.osgi.util.tracker.AbstractTracked.track(AbstractTracked.java:229)<br /> at&nbsp;org.osgi.util.tracker.BundleTracker$Tracked.bundleChanged(BundleTracker.java:444)<br /> at&nbsp;org.apache.felix.framework.util.EventDispatcher.invokeBundleListenerCallback(EventDispatcher.java:916)<br /> at&nbsp;org.apache.felix.framework.util.EventDispatcher.fireEventImmediately(EventDispatcher.java:835)<br /> at&nbsp;org.apache.felix.framework.util.EventDispatcher.fireBundleEvent(EventDispatcher.java:517)<br /> at&nbsp;org.apache.felix.framework.Felix.fireBundleEvent(Felix.java:4541)<br /> at&nbsp;org.apache.felix.framework.Felix.startBundle(Felix.java:2172)<br /> at&nbsp;org.apache.felix.framework.BundleImpl.start(BundleImpl.java:998)<br /> at&nbsp;org.apache.felix.framework.BundleImpl.start(BundleImpl.java:984)<br /> at&nbsp;org.apache.karaf.features.internal.service.FeaturesServiceImpl.startBundle(FeaturesServiceImpl.java:1189)<br /> at&nbsp;org.apache.karaf.features.internal.service.Deployer.deploy(Deployer.java:836)<br /> at&nbsp;org.apache.karaf.features.internal.service.FeaturesServiceImpl.doProvision(FeaturesServiceImpl.java:1079)<br /> at&nbsp;org.apache.karaf.features.internal.service.FeaturesServiceImpl$1.call(FeaturesServiceImpl.java:975)<br /> at&nbsp;java.util.concurrent.FutureTask.run(FutureTask.java:266)<br /> at&nbsp;java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)<br /> at&nbsp;java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)<br /> at&nbsp;java.lang.Thread.run(Thread.java:745)<br />Caused&nbsp;by:&nbsp;java.lang.RuntimeException:&nbsp;java.lang.LinkageError:&nbsp;loader&nbsp;(instance&nbsp;of&nbsp;&nbsp;org/ops4j/pax/swissbox/core/BundleClassLoader):&nbsp;attempted&nbsp;&nbsp;duplicate&nbsp;class&nbsp;definition&nbsp;for&nbsp;name:&nbsp;&quot;com/codahale/metrics/MetricRegistry$Proxy$_$$_WeldClientProxy&quot;<br /> at&nbsp;org.jboss.weld.util.bytecode.ClassFileUtils.toClass(ClassFileUtils.java:101)<br /> at&nbsp;org.jboss.weld.bean.proxy.ProxyFactory.createProxyClass(ProxyFactory.java:484)<br /> at&nbsp;org.jboss.weld.bean.proxy.ProxyFactory.getProxyClass(ProxyFactory.java:357)<br /> ...&nbsp;86&nbsp;more<br />Caused&nbsp;by:&nbsp;java.lang.LinkageError:&nbsp;loader&nbsp;(instance&nbsp;of&nbsp;&nbsp;org/ops4j/pax/swissbox/core/BundleClassLoader):&nbsp;attempted&nbsp;&nbsp;duplicate&nbsp;class&nbsp;definition&nbsp;for&nbsp;name:&nbsp;&quot;com/codahale/metrics/MetricRegistry$Proxy$_$$_WeldClientProxy&quot;<br /> at&nbsp;java.lang.ClassLoader.defineClass1(Native&nbsp;Method)<br /> at&nbsp;java.lang.ClassLoader.defineClass(ClassLoader.java:760)<br /> at&nbsp;sun.reflect.NativeMethodAccessorImpl.invoke0(Native&nbsp;Method)<br /> at&nbsp;sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)<br /> at&nbsp;sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)<br /> at&nbsp;java.lang.reflect.Method.invoke(Method.java:497)<br /> at&nbsp;org.jboss.weld.util.bytecode.ClassFileUtils.toClass2(ClassFileUtils.java:108)<br /> at&nbsp;org.jboss.weld.util.bytecode.ClassFileUtils.toClass(ClassFileUtils.java:97)<br /> ...&nbsp;88&nbsp;more<br />{code}<br /><br /></span> <span class="diffcontext">h2.&nbsp;Package&nbsp;private&nbsp;class<br /><br />With&nbsp;the&nbsp;following:<br />{code}<br />/*&nbsp;package-private&nbsp;*/&nbsp;class&nbsp;MyBean&nbsp;{<br />}<br />{code}<br /><br />With&nbsp;Weld&nbsp;OSGi&nbsp;(in&nbsp;Karaf&nbsp;with&nbsp;PAX&nbsp;CDI),&nbsp;the&nbsp;following&nbsp;exception&nbsp;is&nbsp;thrown:<br />{code}<br />Caused&nbsp;by:&nbsp;java.lang.IllegalAccessError:&nbsp;class&nbsp;MyBean$Proxy$_$$_WeldClientProxy&nbsp;cannot&nbsp;access&nbsp;its&nbsp;superclass&nbsp;MyBean<br /> at&nbsp;java.lang.ClassLoader.defineClass1(Native&nbsp;Method)<br /> at&nbsp;java.lang.ClassLoader.defineClass(ClassLoader.java:800)<br /> at&nbsp;sun.reflect.NativeMethodAccessorImpl.invoke0(Native&nbsp;Method)<br /> at&nbsp;sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)<br /> at&nbsp;sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)<br /> at&nbsp;java.lang.reflect.Method.invoke(Method.java:606)<br /> at&nbsp;org.jboss.weld.util.bytecode.ClassFileUtils.toClass2(ClassFileUtils.java:108)<br /> at&nbsp;org.jboss.weld.util.bytecode.ClassFileUtils.toClass(ClassFileUtils.java:97)<br /> ...&nbsp;75&nbsp;more<br />{code}<br />For&nbsp;injection&nbsp;point&nbsp;within&nbsp;the&nbsp;same&nbsp;package&nbsp;and&nbsp;same&nbsp;bundle.</span> 
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