Thomas Mueller created OAK-1372:
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Summary: XPath queries with both path and property restrictions
are slow
Key: OAK-1372
URL: https://issues.apache.org/jira/browse/OAK-1372
Project: Jackrabbit Oak
Issue Type: Improvement
Reporter: Thomas Mueller
Assignee: Thomas Mueller
Fix For: 0.16
XPath queries such as
{noformat}
/jcr:root/a//b/c/d/*[@type='1' or @type='2']
{noformat}
are slow because they don't currently use an index on the property "type".
They are converted to a join, with selectors a joining b joining c and so on.
Maybe it would be better to join in reverse order, or the query engine might
need to reverse join order in this case (once an index is used).
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