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From "Thomas Watson (JIRA)" <j...@apache.org>
Subject [jira] [Closed] (FELIX-5254) Improve structure of permutations to use unmodifiable capability lists
Date Tue, 31 May 2016 21:43:12 GMT

     [ https://issues.apache.org/jira/browse/FELIX-5254?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Thomas Watson closed FELIX-5254.

> Improve structure of permutations to use unmodifiable capability lists
> ----------------------------------------------------------------------
>                 Key: FELIX-5254
>                 URL: https://issues.apache.org/jira/browse/FELIX-5254
>             Project: Felix
>          Issue Type: Bug
>          Components: Resolver
>    Affects Versions: resolver-1.8.0
>         Environment: All
>            Reporter: Thomas Watson
>            Assignee: Thomas Watson
> As discussed on the felix dev mailing list:
> Implement a capability selection collection that
> points to a constant list of capabilities and has an index to the currently
> selected candidate for that permutation.  That way there is no copying of
> the constant list, instead we have a super lightweight collection that
> points to the unmodifiable list of capabilities and just has an index.
> Changing a Permutation would only involve incrementing that index instead
> of removing from a copy on write list.  We can then get rid of duplicate
> capability lists since the list is unmodifiable it can be shared with
> multiple selection index lists.

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