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<td class="page-title-pattern-first-line " style="padding: 0px; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px; padding-top: 10px"> <a href="https://issues.jboss.org/browse/WELD" style="color: #3b73af; text-decoration: none">Weld</a> / <a href="https://issues.jboss.org/browse/WELD-2470" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-a1582dee-32ba-49ab-9569-9b1f6aa48d7a" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"></a> <a href="https://issues.jboss.org/browse/WELD-2470" style="color: #3b73af; text-decoration: none">WELD-2470</a> </td>
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<td style="vertical-align: top;; padding: 0px; border-collapse: collapse; padding-right: 5px; font-size: 20px; line-height: 30px; mso-line-height-rule: exactly" class="page-title-pattern-header-container"> <span class="page-title-pattern-header" style="font-family: Arial, sans-serif; padding: 0; font-size: 20px; line-height: 30px; mso-text-raise: 2px; mso-line-height-rule: exactly; vertical-align: middle"> <a href="https://issues.jboss.org/browse/WELD-2470" style="color: #3b73af; text-decoration: none">NPE Abortion - CDI-Bean / Inheritance / Generics / Interceptor</a> </span> </td>
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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Change By:</th>
<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="andreas.r." id="email_andreas.r." href="https://issues.jboss.org/secure/ViewProfile.jspa?name=andreas.r." style="color:#3b73af;; color: #3b73af; text-decoration: none">Andreas R.</a> </td>
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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">The following constellation leads to an NPE-Exception which aborts the startup process:<br><br>- A CDI-Bean inherits from an generic abstract class and<br>- overwrites their abstract method.<br>- The abstract method must return a typeparameter.<br>- The method of the CDI-Bean must have an InterceptorBinding-Annotation<br><br>Code-Snippets (full Implementation can be found in the Example.zip)<br><br>{code:java}<br><br>@ApplicationScoped<br>public class CarRepairer extends Repairer<Car> {<br><br> @Override<br> // Without the transactional annotation the bean would be loaded.<br> @Transactional<br> public Car repair() {<br> return new Car();<br> }<br>}<br><br>// Without generic, the bean would be loaded<br>public abstract class Repairer<T> {<br><br> // If this method would not be abstract, everything would be fine<br> public abstract T repair();<br><br>}<br>{code}<br><br></span> <span class="diffaddedchars" style="background-color:#ddfade;">Code-Snippets using generic inheritance(full Implementation can be found in the GenericInheritance.zip)<br>{code:java}<br><br>@ApplicationScoped<br>public class CarRepairer extends Repairer<Car> {<br><br> @Override<br> // Without the transactional annotation the bean would be loaded.<br> @Transactional<br> public Car repair() {<br> return new Car();<br> }<br>}<br><br>// Without generic, the bean would be loaded<br>// Pullrequest https://github.com/weld/core/pull/1801<br>// does not help if generic inherits from another class.<br>public abstract class Repairer<T extends Vehicle> {<br><br> // If this method would not be abstract, everything would be fine<br> public abstract T repair();<br><br>}<br>{code}<br><br></span> <span class="diffcontext">Exception:<br>{code:java}<br>Caused by: org.jboss.weld.exceptions.WeldException: WELD-001524: Unable to load proxy class for bean Managed Bean [class weldtest.CarRepairer] with qualifiers [@Any @Default] with class class weldtest.CarRepairer using classloader WebappClassLoader<br> context: app#tcorder<br> delegate: false<br> at org.jboss.weld.bean.proxy.ProxyFactory.getProxyClass(ProxyFactory.java:398)<br> at org.jboss.weld.injection.producer.SubclassedComponentInstantiator.createEnhancedSubclass(SubclassedComponentInstantiator.java:113)<br> at org.jboss.weld.injection.producer.SubclassedComponentInstantiator.initEnhancedSubclass(SubclassedComponentInstantiator.java:86)<br> at org.jboss.weld.injection.producer.SubclassedComponentInstantiator.<init>(SubclassedComponentInstantiator.java:79)<br> at org.jboss.weld.injection.producer.SubclassedComponentInstantiator.forInterceptedDecoratedBean(SubclassedComponentInstantiator.java:63)<br> at org.jboss.weld.injection.producer.BeanInjectionTarget.initializeAfterBeanDiscovery(BeanInjectionTarget.java:121)<br> at org.jboss.weld.injection.producer.InjectionTargetInitializationContext.initialize(InjectionTargetInitializationContext.java:42)<br> at org.jboss.weld.injection.producer.InjectionTargetService.initialize(InjectionTargetService.java:63)<br> at org.jboss.weld.bootstrap.WeldStartup.deployBeans(WeldStartup.java:465)<br> at org.jboss.weld.bootstrap.WeldBootstrap.deployBeans(WeldBootstrap.java:83)<br> at org.jboss.weld.environment.servlet.WeldServletLifecycle.initialize(WeldServletLifecycle.java:236)<br> at org.jboss.weld.environment.servlet.EnhancedListener.onStartup(EnhancedListener.java:62)<br> at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5302)<br> at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)<br> ... 14 more<br>Caused by: org.jboss.weld.exceptions.WeldException<br> at org.jboss.weld.bean.proxy.InterceptedSubclassFactory.addMethodsFromClass(InterceptedSubclassFactory.java:236)<br> at org.jboss.weld.bean.proxy.InterceptedSubclassFactory.addMethods(InterceptedSubclassFactory.java:119)<br> at org.jboss.weld.bean.proxy.ProxyFactory.createProxyClass(ProxyFactory.java:477)<br> at org.jboss.weld.bean.proxy.ProxyFactory.getProxyClass(ProxyFactory.java:390)<br> ... 27 more<br>Caused by: java.lang.NullPointerException<br> at org.jboss.weld.bean.proxy.InterceptedSubclassFactory.createDelegateToSuper(InterceptedSubclassFactory.java:281)<br> at org.jboss.weld.bean.proxy.InterceptedSubclassFactory.createDelegateToSuper(InterceptedSubclassFactory.java:275)<br> at org.jboss.weld.bean.proxy.InterceptedSubclassFactory.createDelegateMethod(InterceptedSubclassFactory.java:459)<br> at org.jboss.weld.bean.proxy.InterceptedSubclassFactory.addMethodsFromClass(InterceptedSubclassFactory.java:148)<br> ... 30 more<br><br>{code}<br></span> </td>
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