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From Per Kristian Söreide (JIRA) <j...@apache.org>
Subject [jira] [Created] (KARAF-4192) java.lang.ClassCastException in org.apache.karaf.features.internal.region.CandidateComparator
Date Mon, 14 Dec 2015 10:41:46 GMT
Per Kristian Söreide created KARAF-4192:
-------------------------------------------

             Summary: java.lang.ClassCastException in org.apache.karaf.features.internal.region.CandidateComparator
                 Key: KARAF-4192
                 URL: https://issues.apache.org/jira/browse/KARAF-4192
             Project: Karaf
          Issue Type: Bug
          Components: karaf-feature
    Affects Versions: 4.0.3
            Reporter: Per Kristian Söreide


The system bundle will return a String[] {"org.apache.felix.framework", "system.bundle"} on
line 57 in CandidateComparator:

{noformat}
c = ((Comparable<Object>) cap1.getAttributes().get(BundleNamespace.BUNDLE_NAMESPACE))
                    .compareTo(cap2.getAttributes().get(BundleNamespace.BUNDLE_NAMESPACE));{noformat}

This is causing a ClassCastException being thrown.

Equinox will return an ArrayList<String> (seen in the stacktrace)


Stacktrace:
{noformat}
java.lang.ClassCastException: java.util.ArrayList cannot be cast to java.lang.Comparable
	at org.apache.karaf.features.internal.region.CandidateComparator.compare(CandidateComparator.java:57)
	at org.apache.karaf.features.internal.region.CandidateComparator.compare(CandidateComparator.java:31)
	at java.util.TimSort.binarySort(TimSort.java:265)
	at java.util.TimSort.sort(TimSort.java:208)
	at java.util.TimSort.sort(TimSort.java:173)
	at java.util.Arrays.sort(Arrays.java:659)
	at java.util.Collections.sort(Collections.java:217)
	at org.apache.karaf.features.internal.region.SubsystemResolveContext.findProviders(SubsystemResolveContext.java:260)
	at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:272)
	at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:637)
	at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:273)
	at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:637)
	at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:273)
	at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:637)
	at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:273)
	at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:637)
	at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:273)
	at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:637)
	at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:273)
	at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:637)
	at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:273)
	at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:637)
	at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:273)
	at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:637)
	at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:273)
	at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:637)
	at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:273)
	at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:637)
	at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:273)
	at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:637)
	at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:273)
	at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:637)
	at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:273)
	at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:637)
	at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:273)
	at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:637)
	at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:273)
	at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:637)
	at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:273)
	at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:637)
	at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:273)
	at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:637)
	at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:273)
	at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:637)
	at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:273)
	at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:637)
	at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:273)
	at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:637)
	at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:273)
	at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:637)
	at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:273)
	at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:637)
	at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:273)
	at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:637)
	at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:273)
	at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:637)
	at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:273)
	at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:637)
	at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:273)
	at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:637)
	at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:273)
	at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:637)
	at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:273)
	at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:637)
	at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:273)
	at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:637)
	at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:273)
	at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:637)
	at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:273)
	at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:637)
	at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:273)
	at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:637)
	at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:273)
	at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:637)
	at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:273)
	at org.apache.felix.resolver.Candidates.populate(Candidates.java:161)
	at org.apache.felix.resolver.ResolverImpl.resolve(ResolverImpl.java:146)
	at org.apache.karaf.features.internal.region.SubsystemResolver.resolve(SubsystemResolver.java:220)
	at org.apache.karaf.features.internal.service.Deployer.deploy(Deployer.java:263)
	at org.apache.karaf.features.internal.service.FeaturesServiceImpl.doProvision(FeaturesServiceImpl.java:1079)
	at org.apache.karaf.features.internal.service.FeaturesServiceImpl$1.call(FeaturesServiceImpl.java:975)
	at java.util.concurrent.FutureTask.run(FutureTask.java:262)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:745)
{noformat}



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