[ http://issues.apache.org/jira/browse/HIVEMIND-78?page=all ]
James Carman resolved HIVEMIND-78:
----------------------------------
Resolution: Fixed
Fix Version: 1.1
> Certain classloaders (AntClassLoader for example) cause NullPointerException
> in impl.MessageFormatter
> -----------------------------------------------------------------------------------------------------
>
> Key: HIVEMIND-78
> URL: http://issues.apache.org/jira/browse/HIVEMIND-78
> Project: HiveMind
> Type: Bug
> Components: framework
> Versions: 1.0, 1.1
> Environment: MacOSX. Running unit tests of code running within hivemind
> using JUnit inside Ant inside Maven.
> Reporter: Paul Russell
> Assignee: James Carman
> Fix For: 1.1
> Attachments: hivemind-package-defect.diff
>
> MessageFormat uses java.lang.Class.getPackage() to obtain the name of the
> package for the 'reference class' in order to choose an appropriate resource
> bundle. Unfortunately, java.lang.Class.getPackage() does not guarantee to
> return a Package object.
> It may return 'null' if (a) the reference class is loaded by the primordial
> classloader, or (b) if the classloader didn't create a package object and
> associated it with the class.
> I am seeing this problem while running unit tests of my application within
> Maven. Example stacktrace follows:
> java.lang.ExceptionInInitializerError
> at
> org.apache.hivemind.impl.RegistryImpl.getServicePoint(RegistryImpl.java:142)
> at
> org.apache.hivemind.impl.RegistryImpl.getService(RegistryImpl.java:149)
> at org.apache.hivemind.impl.RegistryImpl.startup(RegistryImpl.java:321)
> at
> org.apache.hivemind.impl.RegistryBuilder.constructRegistry(RegistryBuilder.java:417)
> ... lots more
> Caused by: java.lang.NullPointerException
> at
> org.apache.hivemind.impl.MessageFormatter.<init>(MessageFormatter.java:49)
> at
> org.apache.hivemind.impl.MessageFormatter.<init>(MessageFormatter.java:44)
> at org.apache.hivemind.impl.ImplMessages.<clinit>(ImplMessages.java:45)
> ... 59 more
> The only safe way that I can see to achieve the same effect as
> Class.getPackage().getName() is to do something like:
> String lReferenceClassName = referenceClass.getName();
> String lPackageName =
> lReferenceClassName.substring(0,lReferenceClassName.lastIndexOf('.'));
> ... probably as a private function within MessageFormat itself.
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