[jira] Commented: (JCR-235) Cache jcr name to QName mappings

["Tobias Strasser (JIRA)" <ji...@apache.org>]

    [ http://issues.apache.org/jira/browse/JCR-235?page=comments#action_12331150 ] 

Tobias Strasser commented on JCR-235:
-------------------------------------

suggest to extends the NamespaceResolver interface by the respective QName translation methods. This would enable a broader usage of an eventual cache. fruthermore could the session local namespace/qname resolvers be sensitive to local namespace mappings.

> 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
>  Attachments: 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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