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From Daniele Perlo <perlo.dani...@gmail.com>
Subject SPARQL endpoint gives empty response
Date Sat, 26 Jul 2014 17:31:56 GMT
Hi all

i try to run some queries on sparql endpoint but all responses are empty.

So, i tried with the ClerezzaYard example at
https://stanbol.apache.org/docs/trunk/components/entityhub/managedsite.html

and the web interface example at /sparql

PREFIX fise: <http://fise.iks-project.eu/ontology/>
PREFIX dc:   <http://purl.org/dc/terms/>
SELECT distinct ?enhancement ?content ?engine ?extraction_time
WHERE {
  ?enhancement a fise:Enhancement .
  ?enhancement fise:extracted-from ?content .
  ?enhancement dc:creator ?engine .
  ?enhancement dc:created ?extraction_time .
}
ORDER BY DESC(?extraction_time) LIMIT 5

at
org.apache.stanbol.contenthub.enhancements

but responses are all the same

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<sparql xmlns="http://www.w3.org/2005/sparql-results#">
<head/>
<results/>
</sparql>


I'm doing something wrong?

Cheers,
Daniele


-- 
*****

*Perlo Daniele*

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