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Posted to dev@felix.apache.org by "Guo Du (JIRA)" <ji...@apache.org> on 2010/02/08 22:55:27 UTC
[jira] Commented: (FELIX-1867) ModuleImpl diagnoseClassLoadError
throw NullPointerException for empty package name in debug mode
[ https://issues.apache.org/jira/browse/FELIX-1867?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12831146#action_12831146 ]
Guo Du commented on FELIX-1867:
-------------------------------
verified against 2.0.3 release candidate:
https://repository.apache.org/content/repositories/orgapachefelix-001/
> 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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