[Nepomuk] Review Request: Use graph groups to filter out ontology results

[Vishesh Handa]

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http://git.reviewboard.kde.org/r/106878/
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Review request for Nepomuk and Sebastian Trueg.


Description
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    Use graph groups to filter out ontology results
    
    Virtuoso has this concept of graph groups. We have added all the
    ontology graphs + ontology metadata graphs + virtuoso data graph in this
    graph group.
    
    All search results generated by the query engine do not contain results
    from this graph. This is a much faster approach than the earlier user
    visibility approach which would cause a huge performance bottleneck.
    
    While the current approach is great. It still doesn't solve all our
    problems. We still get graph results in the negated terms, and we STILL
    get some ontology results in some queries. Probably a virtuoso bug.

Can I removed the user visibility update code? I don't think it is required any more.


Diffs
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  autotests/test/querytests.cpp 8417599 
  libnepomukcore/query/query.cpp a0459a5 
  services/storage/virtuosoinferencemodel.cpp bac2f5e 

Diff: http://git.reviewboard.kde.org/r/106878/diff/


Testing
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Thanks,

Vishesh Handa

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