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From "Christoph Kiehl (JIRA)" <j...@apache.org>
Subject [jira] Created: (JCR-967) Only search the index for the "jcr:system" tree if needed
Date Mon, 11 Jun 2007 09:13:26 GMT
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


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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