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https://issues.apache.org/jira/browse/FELIX-1754?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12765555#action_12765555
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Matthew Sykes commented on FELIX-1754:
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As an experiment, I changed ServiceRegistrationImpl.isAssignableTo to attempt
to get the requester's wire after the call to getClassByDelegation. While the
wire was null before the attempt to load the class, the getClassByDelegation
resolved the dynamic import and wired the requester to the provider.
While I don't expect this is necessarily the correct way to address the
problem, it did seem to work.
> Usage of BundleContext.getServiceReferences results in failure to activate
> components
> -------------------------------------------------------------------------------------
>
> Key: FELIX-1754
> URL: https://issues.apache.org/jira/browse/FELIX-1754
> Project: Felix
> Issue Type: Bug
> Components: Framework
> Affects Versions: felix-2.2.0
> Reporter: Matthew Sykes
> Priority: Minor
> Attachments: felix-1754.diff
>
>
> I'm attempting to move some code from Equinox to Felix that makes use of the
> declarative services 1.1 runtime. Many of the components in our bundles
> declare multiple 'provide' elements in the service declaration . In general
> these services consist of a standardized interface in one package and
> extensions to that interface in another. Depending on the requirements of
> the code using the component, other bundles will declare their components
> with references to either the standardized interface or the extended
> interface.
> The issue I'm seeing is that the Felix SCR fails to activate some components
> because it's failing to resolve references to the service provided by another
> component. It turns out that the SCR is using
> BundleContext.getServiceReferences instead of
> BundleContext.getAllServiceReferences to locate candidate services when
> resolving references. Unfortunately, the getServiceReference flavor requires
> that the using bundle have access to all class names under which the target
> service was registered - not just the interface associated with the reference.
> Given the use-case I've described and the behavior of Equinox, I believe the
> Felix SCR should be using BundleContext.getAllServiceReferences(..) to
> resolve references and rely on the bundle creator to define the correct
> imports.
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