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https://issues.apache.org/jira/browse/JCR-967?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Marcel Reutegger resolved JCR-967.
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Resolution: Fixed
Fix Version/s: 1.4
> I didn't provide a default implementation of needsSystemTree() on purpose
> because I wanted
> to force everyone extending QueryNode to think about if his implementation
> needs the system
> tree or not.
Ok, fair enough.
Based on your ASF license grant on the patch I added a license header to
PathQueryNodeTest, which was missing. I also added JavaDoc to the new method
SearchIndex.getIndexReader(boolean) and opened up the visibility to protected.
Thanks a lot for your work!
Committed the patch in revision: 550419
> 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: query
> Affects Versions: 1.3
> 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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