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From Jean-Baptiste Onofré (JIRA) <j...@apache.org>
Subject [jira] [Commented] (KARAF-4344) Migrate decanter to DS
Date Wed, 17 Feb 2016 09:01:18 GMT

    [ https://issues.apache.org/jira/browse/KARAF-4344?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15150161#comment-15150161

Jean-Baptiste Onofré commented on KARAF-4344:


> Migrate decanter to DS
> ----------------------
>                 Key: KARAF-4344
>                 URL: https://issues.apache.org/jira/browse/KARAF-4344
>             Project: Karaf
>          Issue Type: Improvement
>          Components: decanter
>    Affects Versions: decanter-1.0.1
>            Reporter: Christian Schneider
>            Assignee: Christian Schneider
>             Fix For: decanter-1.1.0
> Currently we are using osgi APIs to bind services and configuration.
> This is becoming increasingly complicated and error prone.
> For example for some of the decanter components we need two services and multiple configurations
(ManagedServiceFactory). This results in two stacked service trackers and a ManagedServiceFactoryImpl.
It is difficult to make sure this code works correctly in all circumstances.
> So I plan to switch to declarative services where all of the above can be controlled
by annoations. Additionally we can use the new type safe configurations that make it a lot
easier to work with the configuration both as a user and as a developer of a component.
> One important question is the minimum environment we want to support with decanter 1.1.0.
Older karaf versions do not support scr 2 (and DS spec 1.3) which is needed for some interesting
DS features like field injection and type safe configs.

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