Child axis support in order by clause does not work
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Key: JCR-2302
URL: https://issues.apache.org/jira/browse/JCR-2302
Project: Jackrabbit Content Repository
Issue Type: Bug
Components: jackrabbit-core, jackrabbit-spi-commons, xpath
Affects Versions: 2.0-alpha9
Reporter: Alexander Klimetschek
Priority: Minor
Child axis support for order by in xpath queries was introduced with JCR-800.
In my use case I have a cq:Page nodetype which has a jcr:content child of type
cq:PageContent (like nt:file and nt:resource). The jcr:content child has a
cq:lastModified time stamp that I want to search on. I use descending to see
the most recently modified nodes at the top.
The problem is that it does not work when using a child axis in the order by:
(1) //element(*, cq:Page) order by @jcr:content/cq:lastModified descending
This gives a different (and wrong) result compared to the simpler query on
level deeper, which returns the correct results:
(2) //element(*, cq:PageContent) order by @cq:lastModified descending
Switching between ascending and descending in (1) does not change the result
set at all, ie. the order stays the same.
A reason could be non-existing properties (of which there are some in my data),
so to only look at existing properties, I run this query, which still gives
incorrect results:
(3) //element(*, cq:Page)[jcr:content/@cq:lastModified] order by
@jcr:content/cq:lastModified descending
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