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From "Stefan Guggisberg (JIRA)" <j...@apache.org>
Subject [jira] Commented: (JCR-235) Cache jcr name to QName mappings
Date Wed, 12 Oct 2005 09:06:07 GMT
    [ http://issues.apache.org/jira/browse/JCR-235?page=comments#action_12331871 ] 

Stefan Guggisberg commented on JCR-235:
---------------------------------------

+1 

i am gonna commit the patch, thanks!

> Cache jcr name to QName mappings
> --------------------------------
>
>          Key: JCR-235
>          URL: http://issues.apache.org/jira/browse/JCR-235
>      Project: Jackrabbit
>         Type: Improvement
>   Components: core
>     Reporter: Marcel Reutegger
>     Assignee: Stefan Guggisberg
>     Priority: Minor
>      Fix For: 1.0
>  Attachments: QNameCaching.patch, QNameResolver.patch
>
> Currently jcr names are always parsed and resolved into QName instances. Introducing
a cache would increase performance and also save memory because well known and often used
jcr names would always return the same QName instance from cache.
> Testing with common read operations shows a performance improvement of about 25%.
> The test involved the following methods on Node interface:
> - getProperty()
> - getProperties()
> - getName()
> - getPath()
> - isLocked()
> - isNodeType()
> - getPrimaryNodeType()
> - hasNodes()
> - getNodes()
> Attached proposed implementation of a QNameResolver.
> Please comment.

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