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From "James Carman (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (JOHNZON-108) Add dynamic ServiceLoader support for OSGi environments
Date Fri, 07 Jul 2017 17:11:00 GMT

    [ https://issues.apache.org/jira/browse/JOHNZON-108?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16078397#comment-16078397
] 

James Carman commented on JOHNZON-108:
--------------------------------------

While Johnzon may be eligible for discovery using SpiFly, it's now up to the bundle doing
the discovering to add headers to their manifest properly.  That's what I ran into trying
to use the "standard" JSON-P and JSON-B jars.  We can use the ones from Geronimo, but they
need a bit of work also it seems.  

> Add dynamic ServiceLoader support for OSGi environments
> -------------------------------------------------------
>
>                 Key: JOHNZON-108
>                 URL: https://issues.apache.org/jira/browse/JOHNZON-108
>             Project: Johnzon
>          Issue Type: Improvement
>          Components: Core
>    Affects Versions: 1.0.0
>            Reporter: Stefan Seifert
>             Fix For: 1.1.0
>
>
> Johnzon 1.0.0 together with org.apache.geronimo.specs:geronimo-json_1.0_spec:1.0-alpha-1
currently does not work within OSGi envrionments - the service loader does not found the implementation
class (see GERONIMO-6560).
> the OSGi spec compliant way for supporting ServiceLoaders is described in the [OSGi Enterprise
Specification|http://www.osgi.org/Download/Release5] (from version 5) chapter 133. [Aries
SPI Fly|http://aries.apache.org/modules/spi-fly.html] is the reference implementation which
also contains a good summary of the steps to make a bundle compatible.
> concerning johnzon-core (provider bundle) we only need to add two bundle headers {{Require-Capability}}
and {{Provide-Capability}} for the SPI {{javax.json.spi.JsonProvider}}.



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