[weld-issues] [JBoss JIRA] (WELD-1134) NPE on org.jboss.weld.util.reflection.HierarchyDiscovery

[Ales Justin (JIRA)]

     [ https://issues.jboss.org/browse/WELD-1134?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ales Justin reassigned WELD-1134:
---------------------------------

    Assignee: Marko Lukša

    
> NPE on org.jboss.weld.util.reflection.HierarchyDiscovery
> --------------------------------------------------------
>
>                 Key: WELD-1134
>                 URL: https://issues.jboss.org/browse/WELD-1134
>             Project: Weld
>          Issue Type: Bug
>            Reporter: George Gastaldi
>            Assignee: Marko Lukša
>
> I upgraded Forge to Weld 1.1.8.Final, from 1.1.2.Final and now I am getting the following error:
> {code}
> com.google.common.collect.ComputationException: java.lang.NullPointerException
>         at com.google.common.collect.ComputingConcurrentHashMap$ComputingMapAdapter.get(ComputingConcurrentHashMap.java:397)
>         at org.jboss.weld.resources.SharedObjectCache.getTypeClosure(SharedObjectCache.java:82)
>         at org.jboss.weld.resources.SharedObjectFacade.getTypeClosure(SharedObjectFacade.java:65)
>         at org.jboss.weld.introspector.TypeClosureLazyValueHolder.computeValue(TypeClosureLazyValueHolder.java:52)
>         at org.jboss.weld.introspector.TypeClosureLazyValueHolder.computeValue(TypeClosureLazyValueHolder.java:31)
>         at org.jboss.weld.util.LazyValueHolder.get(LazyValueHolder.java:34)
>         at org.jboss.weld.introspector.jlr.AbstractWeldAnnotated.getTypeClosure(AbstractWeldAnnotated.java:193)
>         at org.jboss.weld.introspector.jlr.WeldMethodImpl.of(WeldMethodImpl.java:74)
>         at org.jboss.weld.introspector.jlr.WeldClassImpl.<init>(WeldClassImpl.java:261)
>         at org.jboss.weld.introspector.jlr.WeldClassImpl.of(WeldClassImpl.java:115)
>         at org.jboss.weld.resources.ClassTransformer$TransformAnnotatedTypeToWeldClass.apply(ClassTransformer.java:88)
>         at org.jboss.weld.resources.ClassTransformer$TransformAnnotatedTypeToWeldClass.apply(ClassTransformer.java:78)
>         at com.google.common.collect.ComputingConcurrentHashMap$ComputingValueReference.compute(ComputingConcurrentHashMap.java:355)
>         at com.google.common.collect.ComputingConcurrentHashMap$ComputingSegment.compute(ComputingConcurrentHashMap.java:184)
>         at com.google.common.collect.ComputingConcurrentHashMap$ComputingSegment.getOrCompute(ComputingConcurrentHashMap.java:153)
>         at com.google.common.collect.ComputingConcurrentHashMap.getOrCompute(ComputingConcurrentHashMap.java:69)
>         at com.google.common.collect.ComputingConcurrentHashMap$ComputingMapAdapter.get(ComputingConcurrentHashMap.java:393)
>         at org.jboss.weld.resources.ClassTransformer.loadClass(ClassTransformer.java:190)
>         at org.jboss.weld.bootstrap.BeanDeployer.addClass(BeanDeployer.java:86)
>         at org.jboss.weld.bootstrap.BeanDeployer.addClasses(BeanDeployer.java:123)
>         at org.jboss.weld.bootstrap.BeanDeployment.createBeans(BeanDeployment.java:184)
>         at org.jboss.weld.bootstrap.WeldBootstrap.deployBeans(WeldBootstrap.java:350)
>         at org.jboss.weld.bootstrap.api.helpers.ForwardingBootstrap.deployBeans(ForwardingBootstrap.java:70)
>         at org.jboss.weld.environment.se.Weld.initialize(Weld.java:133)
>         at org.jboss.forge.shell.Bootstrap$1.run(Bootstrap.java:132)
>         at java.lang.Thread.run(Thread.java:722)
> Caused by: java.lang.NullPointerException
>         at java.lang.reflect.Array.newArray(Native Method)
>         at java.lang.reflect.Array.newInstance(Array.java:70)
>         at org.jboss.weld.util.reflection.HierarchyDiscovery.discoverTypes(HierarchyDiscovery.java:99)
>         at org.jboss.weld.util.reflection.HierarchyDiscovery.init(HierarchyDiscovery.java:74)
>         at org.jboss.weld.util.reflection.HierarchyDiscovery.getTypeClosure(HierarchyDiscovery.java:58)
>         at org.jboss.weld.resources.SharedObjectCache$4.apply(SharedObjectCache.java:58)
>         at org.jboss.weld.resources.SharedObjectCache$4.apply(SharedObjectCache.java:55)
>         at com.google.common.collect.ComputingConcurrentHashMap$ComputingValueReference.compute(ComputingConcurrentHashMap.java:355)
>         at com.google.common.collect.ComputingConcurrentHashMap$ComputingSegment.compute(ComputingConcurrentHashMap.java:184)
>         at com.google.common.collect.ComputingConcurrentHashMap$ComputingSegment.getOrCompute(ComputingConcurrentHashMap.java:153)
>         at com.google.common.collect.ComputingConcurrentHashMap.getOrCompute(ComputingConcurrentHashMap.java:69)
>         at com.google.common.collect.ComputingConcurrentHashMap$ComputingMapAdapter.get(ComputingConcurrentHashMap.java:393)
> {code}
> This line is the causing issue: Class<?> arrayClass = Array.newInstance(Reflections.getRawType(genericComponentType), 0).getClass();
> genericComponentType is sun.reflect.generics.reflectiveObjects.TypeVariableImpl.
> Need a test case to simulate that

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