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

[George Gastaldi (JIRA)]

George Gastaldi created WELD-1134:
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             Summary: 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


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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