[redland-dev] [Rasqal RDF Query Library 0000382]: simple graph query returns no results

[Mantis Bug Tracker]

The following issue has been SUBMITTED. 
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http://bugs.librdf.org/mantis/view.php?id=382 
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Reported By:                vandenoever
Assigned To:                
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Project:                    Rasqal RDF Query Library
Issue ID:                   382
Category:                   query engine
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     new
Query Language:             sparql 
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Date Submitted:             2010-08-20 15:11
Last Modified:              2010-08-20 15:11
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Summary:                    simple graph query returns no results
Description: 
The simple query
 select ?g ?s ?p ?o where {graph ?g {?s ?p ?o}}
gives no results for any tested store.

The problem can be reproduced by running these two commands in succession:
 rdfproc -c -n -s sqlite test add s p o c
 rdfproc -c -s sqlite test query sparql - 'select ?g ?s ?p ?o where {graph
?g {?s ?p ?o}}'

This problem also exists with the 'hashes' store.
Even in version 0.9.19 the old query engine does not have the problem and
correctly reports one triple for the above two commands.

This problem affects the RDF features of KWord which makes heavy use of
graphs.

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Issue History 
Date Modified    Username       Field                    Change               
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2010-08-20 15:11 vandenoever    New Issue                                    
2010-08-20 15:11 vandenoever    File Added: test.sh                          
2010-08-20 15:11 vandenoever    Query Language            => sparql          
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