[jira] [Closed] (SLING-7194) Document that AdapterManager sorts AdapterFactory implementations lowest ranking first

["Carsten Ziegeler (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SLING-7194?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Carsten Ziegeler closed SLING-7194.
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> 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 2.18.0
>
>
> 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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