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https://issues.apache.org/jira/browse/CLEREZZA-460?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13013526#comment-13013526
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Daniel Spicar commented on CLEREZZA-460:
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Currently it is possible to register the same Renderlet multiple times when
using the (old) RenderletManager. This might be quite serious considering that
most services still use the RenderletManager to register SSPs. When I register
in the activate method, the renderlet gets registered each time the activate
method is called resulting (according to the GUI) in the exact same renderlet
specification being registered multiple times.
> 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
>
>
> 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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