Only search the index for the "jcr:system" tree if needed
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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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