[redland-dev] [Rasqal RDF Query Library 0000434]: OPTIONAL and named graphs don't mix

[Mantis Bug Tracker]

The following issue has been SUBMITTED. 
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http://bugs.librdf.org/mantis/view.php?id=434 
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Reported By:                dbrnz
Assigned To:                
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Project:                    Rasqal RDF Query Library
Issue ID:                   434
Category:                   query engine
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     new
Query Language:             SPARQL 
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Date Submitted:             2011-03-23 09:48
Last Modified:              2011-03-23 09:48
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Summary:                    OPTIONAL and named graphs don't mix
Description: 
The query:

SELECT * WHERE {
  graph ?g {
    ?s a <http://example.org/Class> .
    optional { ?s <http://example.org/property> ?o }
    }
  }

returns no results even though the query:

SELECT * WHERE {
  graph ?g {
    ?s a <http://example.org/Class> .
    ?s <http://example.org/property> ?o
    }
  }

does.

Steps to Reproduce: 
Run the attached script with the attached RDF.
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Issue History 
Date Modified    Username       Field                    Change               
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2011-03-23 09:48 dbrnz          New Issue                                    
2011-03-23 09:48 dbrnz          File Added: test                             
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