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https://issues.apache.org/jira/browse/CLEREZZA-460?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13015076#comment-13015076
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Reto Bachmann-Gmür commented on CLEREZZA-460:
---------------------------------------------

Thanks Daniel for the patch, thanks to Tsuy for applying it. It might be better 
to keep a map of renderingspecifications to rendelter registrations so that 
RenderletManagerImpl nevers unregister renderlets register by other means, with 
the current version if a bundle tries to override a RenderletManager-renderlet 
the overriding service disappears when the bundle provideing the ssp it wants 
to override gets restarted.

> Use whiteboard pattern for Renderlets
> -------------------------------------
>
>                 Key: CLEREZZA-460
>                 URL: https://issues.apache.org/jira/browse/CLEREZZA-460
>             Project: Clerezza
>          Issue Type: Improvement
>            Reporter: Reto Bachmann-Gmür
>            Assignee: Reto Bachmann-Gmür
>         Attachments: patch-typerendering-core.diff, renderletmgr_patch.diff
>
>
> The current mechanism for renderlets is overly complex. Instead of describing 
> renderlets in a graph rendelets should be services that have properties 
> indicating the rdf type and the mode-pattern they handle.
> The priority for selecting renderlets should be:
> - type, according to type-priority list
> - length of regex math (the matching regex with the most alphanumeric 
> characters wins)
> - startlevel of the bundle providing the service

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