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Posted to dev@sling.apache.org by "Stefan Seifert (JIRA)" <ji...@apache.org> on 2017/12/12 10:42:00 UTC
[jira] [Updated] (SLING-7194) Document that AdapterManager sorts
AdapterFactory implementations lowest ranking first
[ https://issues.apache.org/jira/browse/SLING-7194?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Stefan Seifert updated SLING-7194:
----------------------------------
Affects Version/s: (was: API 2.16.6)
API 2.16.4
> Document that AdapterManager sorts AdapterFactory implementations lowest ranking first
> --------------------------------------------------------------------------------------
>
> Key: SLING-7194
> URL: https://issues.apache.org/jira/browse/SLING-7194
> Project: Sling
> Issue Type: Task
> Components: Extensions
> Affects Versions: API 2.16.4
> Reporter: Stefan Seifert
> Assignee: Stefan Seifert
> Priority: Minor
> Fix For: API 2.16.6
>
>
> the current implementation of AdapterManager uses a AdapterFactoryDescriptorMap to sort the AdapterFactory implementations found.
> this is done using a TreeMap with the ServiceReference as key. ServiceReference implements a compareTo.
> according to its documentation the default implementation sorts with service-ranking lowest-first/service id highest-first:
> https://osgi.org/javadoc/r6/core/org/osgi/framework/ServiceReference.html#compareTo(java.lang.Object)
> when picking a service from multiple ones using BundleContext.getService, the service with hightest service ranking/lowest service id is returned.
> i would expect the same from the AdapterManager implementation - if multiple implementations match pick that one with highest ranking/lowest service id.
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