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https://issues.apache.org/jira/browse/FELIX-4727?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Thomas Watson closed FELIX-4727.
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Thanks. Closing.
> WrappedResource.getCapabilities ignores the namespace param
> -----------------------------------------------------------
>
> Key: FELIX-4727
> URL: https://issues.apache.org/jira/browse/FELIX-4727
> Project: Felix
> Issue Type: Bug
> Components: Resolver
> Environment: All
> Reporter: Thomas Watson
> Assignee: Richard S. Hall
> Fix For: resolver-1.2.0
>
> Attachments: Felix-4737.patch
>
>
> The overall design of org.apache.felix.resolver.WrappedResource is that it is
> an internal type to the ResolverImpl and is not exposed to external code.
> The fact that it does not pay attention to the namespace param is an
> oversite, but not one that effects the ResolverImpl since it uses a null
> param anyway and does its own filtering of the capabilities.
> But there are cases where this type will get exposed to code outside the
> resolver implementation. One example is when ResolverImpl.mergeUses is
> called and does a ArrayList.contains. Typically the types in the list are
> provided by the ResolveContext implementation. If a WrappedCapability is
> passed to the ArrayList.contains method then it does an equals call across
> all values in the list. If a ResolveContext capability implementation of
> that equals method calls getResource on WrappedCapability then it will be
> exposed to the WrappedResource. I know of one case where this causes issues
> when the client code is trying to get the osgi.identity capability of the
> WrappedResource. All capabilities are being returned but the first one is
> not the expected osgi.identity.
> Here is a stacktrace from Aries:
> Caused by: java.lang.NullPointerException
> at
> org.apache.aries.subsystem.obr.internal.FelixResourceAdapter.equals(FelixResourceAdapter.java:44)
> at java.util.ArrayList.indexOf(ArrayList.java:319)
> at java.util.ArrayList.contains(ArrayList.java:302)
> at
> org.apache.felix.resolver.ResolverImpl.mergeUses(ResolverImpl.java:955)
> at
> org.apache.felix.resolver.ResolverImpl.calculatePackageSpaces(ResolverImpl.java:767)
> at
> org.apache.felix.resolver.ResolverImpl.calculatePackageSpaces(ResolverImpl.java:715)
> at
> org.apache.felix.resolver.ResolverImpl.calculatePackageSpaces(ResolverImpl.java:715)
> at
> org.apache.felix.resolver.ResolverImpl.calculatePackageSpaces(ResolverImpl.java:715)
> at org.apache.felix.resolver.ResolverImpl.resolve(ResolverImpl.java:249)
> at
> org.apache.aries.subsystem.core.internal.SubsystemResource.computeDependencies(SubsystemResource.java:410)
> at
> org.apache.aries.subsystem.core.internal.SubsystemResource.computeDependencies(SubsystemResource.java:393)
> at
> org.apache.aries.subsystem.core.internal.SubsystemResource.<init>(SubsystemResource.java:101)
> at
> org.apache.aries.subsystem.core.internal.SubsystemResource.<init>(SubsystemResource.java:92)
> at
> org.apache.aries.subsystem.core.internal.InstallAction.createSubsystemResource(InstallAction.java:128)
> at
> org.apache.aries.subsystem.core.internal.InstallAction.run(InstallAction.java:62)
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