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https://issues.apache.org/jira/browse/SLING-254?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12569872#action_12569872
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Felix Meschberger commented on SLING-254:
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> 2) At startup, the Sling class searches the classpath and/or environment for 
> additional configuration properties

Hmm, I would ignore the classpath, this is not manageable....

Environmentconfiguration is ok, provided it is based on well-known mechanisms 
such as system properties (dangerous in certain app server environments such as 
WebSphere) or configuration properties (ok if based on the sling.properties and 
its extensions mechanis)


> Launchpad war should optionally use an external Repository, without requiring 
> a change of bundles
> -------------------------------------------------------------------------------------------------
>
>                 Key: SLING-254
>                 URL: https://issues.apache.org/jira/browse/SLING-254
>             Project: Sling
>          Issue Type: Improvement
>          Components: Launchpad
>            Reporter: Bertrand Delacretaz
>            Assignee: Bertrand Delacretaz
>
> It would be useful to allow the Launchpad to use an external Repository 
> (accessed via JNDI or RMI), without having to modify the war file or 
> load/unload bundles.
> I'll search for a solution along these lines:
> 1) Launchpad includes both the jackrabbit-server (embedded repository) and 
> jackrabbit-client (access to external repositories via JNDI or RMI) bundles, 
> but by default the jackrabbit-client does not provide a Repository.
> 2) At startup, the Sling class searches the classpath and/or environment for 
> additional configuration properties
> 3) A specific configuration property prevents the jackrabbit-server bundle 
> from providing a Repository, and lets the jackrabbit-client provide it.
> In this way, the web container could be setup in advance to define which 
> Repository to use, and new releases of the launchpad war file could be 
> dropped in without requiring any configuration or war file changes.

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