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https://issues.apache.org/jira/browse/FELIX-3334?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13227525#comment-13227525
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Carsten Ziegeler commented on FELIX-3334:
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Yeah, I liked this feature as well but I fear those questions in reality. A lot
of interesting things could happen which in most cases might be unwanted.
Maybe we should just use a different way of pluggability which allows for more
predictable scenarios:
- moving the default implementation of the store into a separate bundle and
making the dependency required would be one solution
- require people to create their own prefs bundle where the store impl has to
be inside the prefs bundle would be another one
Not nice either....
> PreferencesManager can throw NPE after being stopped.
> -----------------------------------------------------
>
> Key: FELIX-3334
> URL: https://issues.apache.org/jira/browse/FELIX-3334
> Project: Felix
> Issue Type: Bug
> Components: Preferences Service
> Affects Versions: prefs-1.0.4
> Reporter: J.W. Janssen
> Assignee: Carsten Ziegeler
> Labels: patch
> Fix For: prefs-1.0.6
>
> Attachments: felix-prefs-3334-2.patch, quickfix-new.patch
>
>
> PreferencesManager#bundleChanged tries to intercept bundles that are
> uninstalled. However, if the PreferencesManager itself is stopped, it does
> not unregister itself as bundle listener, causing possible NPEs when other
> bundles depending on the preferences service are stopped later on, for
> example during a shutdown.
> I've got a patch available, will attach it to this issue to be applied.
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