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https://issues.apache.org/jira/browse/OAK-1386?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13890830#comment-13890830
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Jukka Zitting commented on OAK-1386:
------------------------------------

bq. con: for PermissionProvider#isGranted and PermissionProvider#hasPrivilege 
the treepermission object is not present and retrieving the type always will 
walk up the hierarchy to retrieve the type of the parent with the associated 
performance impact.

The {{isGranted()}} and {{hasPrivilege()}} method are hardly ever 
performance-critical, as their main purpose is to provide guidance to a human 
user interface about which operations are available. So I wouldn't worry too 
much about extra performance overhead here.

> Move tree type to permission implementation
> -------------------------------------------
>
>                 Key: OAK-1386
>                 URL: https://issues.apache.org/jira/browse/OAK-1386
>             Project: Jackrabbit Oak
>          Issue Type: Improvement
>          Components: core
>            Reporter: angela
>            Assignee: angela
>         Attachments: OAK-1386.patch
>
>
> As suggested by jukka on the mailing list we may consider removing the tree 
> type from the ImmutableTree and ImmutableRoot and just keep it inside the 
> permission evaluation code.
> pro: simplify ImmutableTree
> con: for PermissionProvider#isGranted and PermissionProvider#hasPrivilege the 
> treepermission object is not present and retrieving the type *always* will 
> walk up the hierarchy to retrieve the type of the parent with the associated 
> performance impact. 



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