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From "Alex Parvulescu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (OAK-924) Optimize namespace lookups
Date Tue, 08 Oct 2013 14:10:43 GMT

    [ https://issues.apache.org/jira/browse/OAK-924?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13789232#comment-13789232
] 

Alex Parvulescu commented on OAK-924:
-------------------------------------

Had a quick chat with Jukka about the state of this issue.

Things I'd like to tackle next are:
 - add a commit hook that builds a reverse URI->prefix mapping, this should optimize the
access patterns 
(this could also keep a list of all registered URIs and prefixes to optimize the  #getPrefixes()
and #getURIs() calls)
 - remove the SessionNamespaces#init call
 - move the default ns (static) map to the initial content 
 

> Optimize namespace lookups
> --------------------------
>
>                 Key: OAK-924
>                 URL: https://issues.apache.org/jira/browse/OAK-924
>             Project: Jackrabbit Oak
>          Issue Type: Sub-task
>          Components: core, jcr
>            Reporter: Jukka Zitting
>            Assignee: Jukka Zitting
>              Labels: performance
>         Attachments: OAK-924-bench.patch
>
>
> The current namespace handling code does a lot of repetitive work, which shows up in
hotspots like XML imports and Sling's namespace mapping code.



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