[jira] Closed: (FELIX-1867) ModuleImpl diagnoseClassLoadError throw NullPointerException for empty package name in debug mode

["Guo Du (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FELIX-1867?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Guo Du closed FELIX-1867.
-------------------------


thanks

> ModuleImpl diagnoseClassLoadError throw NullPointerException for empty package name in debug mode
> -------------------------------------------------------------------------------------------------
>
>                 Key: FELIX-1867
>                 URL: https://issues.apache.org/jira/browse/FELIX-1867
>             Project: Felix
>          Issue Type: Bug
>          Components: Framework
>    Affects Versions: felix-2.0.2
>         Environment: java 1.5/1.6
>            Reporter: Guo Du
>            Assignee: Richard S. Hall
>             Fix For: felix-2.0.3
>
>
> THE PROBLEM
> org.apache.felix.framework.ModuleImpl$ModuleClassLoader throw
> NullPointerException when try to load class with default package name
> (empty package name) in debug mode (felix.log.level=4).
> Felix framework version 2.0.0 (2.0.2 have the same problem)
> BACKGROUND
> I installed groovy 1.6.5 official release to felix framework, when
> evaluate my script, it throw the NullPointerException because groovy
> try to dynamically load java.util.Calendar. During the scan, it will
> try to load class "java$util$Calendar". The wired format will be
> treated by felix class loader as a class with an empty package name.
> Following are the stack trace.
> Caused by: java.lang.NullPointerException
>        at org.apache.felix.framework.FelixResolverState.getResolvedCandidates(FelixResolverState.java:652)
>        at org.apache.felix.framework.Felix$FelixResolver.getResolvedCandidates(Felix.java:3993)
>        at org.apache.felix.framework.ModuleImpl.diagnoseClassLoadError(ModuleImpl.java:2144)
>        at org.apache.felix.framework.ModuleImpl.access$400(ModuleImpl.java:60)
>        at org.apache.felix.framework.ModuleImpl$ModuleClassLoader.loadClass(ModuleImpl.java:1644)
>        at java.lang.ClassLoader.loadClass(ClassLoader.java:300)
>        at groovy.lang.GroovyClassLoader.loadClass(GroovyClassLoader.java:660)
> EXCEPTION POINT
> org.apache.felix.framework.ModuleImpl
> line:2136        try
> line:2137        {
> line:2138            pkgReq = new
> Requirement(ICapability.PACKAGE_NAMESPACE, "(package=" + pkgName +
> ")");
> line:2139        }
> line:2140        catch (InvalidSyntaxException ex)
> line:2141        {
> line:2142            // This should never happen.
> line:2143        }
> line:2144        PackageSource[] exporters =
> line:2145            resolver.getResolvedCandidates(pkgReq);
> We need handle the exception at line:2142 or do something different
> before line 2138.

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