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From "Jukka Zitting (JIRA)" <j...@apache.org>
Subject [jira] Updated: (JCR-967) Only search the index for the "jcr:system" tree if needed
Date Wed, 21 Nov 2007 10:47:43 GMT

     [ https://issues.apache.org/jira/browse/JCR-967?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jukka Zitting updated JCR-967:
------------------------------

          Component/s: jackrabbit-core
    Affects Version/s:     (was: 1.3)

> Only search the index for the "jcr:system" tree if needed
> ---------------------------------------------------------
>
>                 Key: JCR-967
>                 URL: https://issues.apache.org/jira/browse/JCR-967
>             Project: Jackrabbit
>          Issue Type: Improvement
>          Components: jackrabbit-core, query
>            Reporter: Christoph Kiehl
>             Fix For: 1.4
>
>         Attachments: patch.txt
>
>
> Right now every time a query is executed the index of the current workspace as well as
the index of the "jcr:system" tree is searched. A lot of queries are not searching in the
"jcr:system" tree at all therefore it should be checked if the query contains paths that include
"jcr:system". There are two relevant nodes in the query tree to find that out:
> - what's the first location step and does it include the jcr:system tree? I think that's
an easy one.
> - does the query contain a jcr:deref node? If there is an intermediate result of a query
may dereference into the jcr:system tree. 
> This should notably speed up query execution if you are working extensively with versioning.

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