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https://issues.apache.org/jira/browse/JENA-508?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14364979#comment-14364979
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Rob Vesse commented on JENA-508:
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Andy raises a lot of good points, in general a lot of stuff on that spreadsheet
already has some equivalent in SPARQL. I would read through the SPARQL 1.1
specification carefully, particularly [Section
17|http://www.w3.org/TR/sparql11-query/#expressions] which details all the
available operators and functions and update your spreadsheet accordingly.
It is also worth noting that a bunch of the numerical functions already have
implementations on the JENA-507 and so for some functions it would just be a
case of wrapping the existing implementation so that it is available under the
XPath namespace as well
> Add support for XPath 3 Functions
> ---------------------------------
>
> Key: JENA-508
> URL: https://issues.apache.org/jira/browse/JENA-508
> Project: Apache Jena
> Issue Type: Improvement
> Components: ARQ
> Reporter: Rob Vesse
> Labels: gsoc, gsoc2015
>
> XPath 3 is now a Candidate Recommendation -
> http://www.w3.org/TR/xpath-functions-30/
> It contains many new functions and operators (particularly in the
> mathematical space) which we should consider adding into future versions of
> ARQ.
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