[Nepomuk] Review Request: Use Virtuoso's inbuilt prefix expansion instead of the NRLModel

[Commit Hook]

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This review has been submitted with commit e966c39de0c708d4e23c4e730c1946e0d5849fdf by Vishesh Handa to branch master.

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On Sept. 17, 2012, 10 a.m., Vishesh Handa wrote:
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> (Updated Sept. 17, 2012, 10 a.m.)
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> 
> Review request for Nepomuk and Sebastian Trueg.
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> Description
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>     Use Virtuoso's inbuilt prefix expansion instead of the NRLModel
>     
>     The NRL Model is terribly slow and consumes as high as 60% of the actual
>     time it takes to run some queries. Arguably, these queries were small
>     and virtuoso ran them quite fast. But it still is a lot of unnecessary
>     time spent on modifying the query. (Based on callgrind)
>     
>     Since virtuoso already needs to parse the sparql query, it seems to make
>     more sense to let it do the job. Plus, it cleans up our code rather
>     nicely.
>     
>     BUG: 304361
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> ---
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> With this it is now faster to write queries purely in sparql and avoid the Node::resourceToN3 call which is rather expensive.
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> Diffs
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>   services/storage/datamanagementadaptor.cpp 499fcd0 
>   services/storage/repository.h 63e4c5c 
>   services/storage/repository.cpp 62b12f9 
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> Diff: http://git.reviewboard.kde.org/r/106474/diff/
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> Testing
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> Thanks,
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> Vishesh Handa
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>

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