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Posted to oak-issues@jackrabbit.apache.org by "angela (JIRA)" <ji...@apache.org> on 2013/02/28 15:17:12 UTC
[jira] [Comment Edited] (OAK-660) ReadOnlyTree: implement
Object#equals and Object#hashCode
[ https://issues.apache.org/jira/browse/OAK-660?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13589552#comment-13589552 ]
angela edited comment on OAK-660 at 2/28/13 2:16 PM:
-----------------------------------------------------
i built and had to deal with jr permission eval... i would argue that this is sufficient experience to
know on what needs to be done what can be considered premature optimization and problematic from a
caching point of view.
may i ask you to focus on this issue and the patch. if you object it i will work out another way to
achieve my goals.
was (Author: anchela):
i built and had to deal with jr permission eval... i would argue that this is sufficient experience to
know on what needs to be done what can be considered premature optimization and problematic from a
caching point of view.
> ReadOnlyTree: implement Object#equals and Object#hashCode
> ---------------------------------------------------------
>
> Key: OAK-660
> URL: https://issues.apache.org/jira/browse/OAK-660
> Project: Jackrabbit Oak
> Issue Type: Improvement
> Components: core
> Reporter: angela
> Priority: Minor
> Attachments: OAK-660.patch
>
>
> for OAK-527 i was looking for way to detect changes to the permission store
> in an efficient and performing way without reloading the complete permissions upon every single call to Root#refresh and Root#rebase.
> in a private discussion with Marcel he pointed out the fact that comparing
> NodeStates that hold the permission information for a given set of principals
> i would most probably do the trick. however this comes with the drawback of
> loosing all hierarchy information when changing the permission provider to work on oak-spi interface instead of using (ReadOnly)Trees, which is a
> bit unfortunate in a hierarchy-aware permission evaluation.
> since one of the reason for having the ReadOnlyTree implementation IMO is
> to bring Tree-functionality to a NodeState whose ancestors have been accessed
> before, i would like to suggest to add implementations for #equals and
> #hashCode to ReadOnlyTree that more or less reflect the those of the underlying NodeState.
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