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https://issues.apache.org/jira/browse/ARIES-1439?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14978721#comment-14978721
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John Ross commented on ARIES-1439:
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Equinox uses a version of the Felix Resolver that is not far from the latest.
The org.apache.felix.resolver.util.CopyOnWriteList.add method does not throw an
UnsupportedOperationException there. Looks like the change first appears here:
http://svn.apache.org/viewvc?view=revision&revision=1690730. Please note that
although CopyOnWriteList is in an internal package, the implementation has been
publicly exposed to implementers of the ResolveContext via the
insertHostedCapability method, and this is a breaking change.
> Aries ResolveContext.insertHostedCapability() calls unsupported add() method
> on capabilies
> ------------------------------------------------------------------------------------------
>
> Key: ARIES-1439
> URL: https://issues.apache.org/jira/browse/ARIES-1439
> Project: Aries
> Issue Type: Bug
> Components: Subsystem
> Affects Versions: subsystem-core-2.0.4
> Reporter: David Bosschaert
> Assignee: David Bosschaert
> Fix For: subsystem-2.0.6
>
>
> The method
> {code}org.apache.aries.subsystem.core.internal.ResolveContext.insertHostedCapability(List<Capability>
> capabilities, HostedCapability hostedCapability){code}
> calls {{capabilities.add(hostedCapability)}}.
> However the key reason for this callback is to insert this capability at the
> correct position in the capabilities list. The Felix implementation of the
> List provided insist on a call to {{add(idx, capability)}} which seems to
> make sense in this context.
> Currently this call causes the following exception:
> {code}java.lang.UnsupportedOperationException: null
> at
> org.apache.felix.resolver.util.CopyOnWriteList.add(CopyOnWriteList.java:135)
> at
> org.apache.aries.subsystem.core.internal.ResolveContext.insertHostedCapability(ResolveContext.java:101)
> at org.apache.felix.resolver.Candidates.prepare(Candidates.java:934)
> at org.apache.felix.resolver.ResolverImpl.resolve(ResolverImpl.java:232)
> at org.apache.felix.resolver.ResolverImpl.resolve(ResolverImpl.java:158)
> at
> org.apache.aries.subsystem.core.internal.SubsystemResource.computeDependencies(SubsystemResource.java:372){code}
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