[Nepomuk] Review Request: Fix possibility of infinite loop

[Commit Hook]

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This review has been submitted with commit 7d0213d9ca3c93b3909d1cf3ef5dec874a97bb7c by Simeon Bird to branch master.

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On Nov. 14, 2012, 4:19 a.m., Simeon Bird wrote:
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> (Updated Nov. 14, 2012, 4:19 a.m.)
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> 
> Review request for Nepomuk, Vishesh Handa and Sebastian Trueg.
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> Description
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> Do not loop forever if there is an error executing the
>  query in createUri (for example, the connection to the
>  server died). Instead just return an empty url.
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> Also check for such an error with createGraph in ResourceMerger::merge.
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> This fixes a bug sort of introduced by b54cbaa5e00c1191cd2e66399aeb86a04ba85ef1.
> If something went wrong with virtuoso, xsession-errors would fill up the
> available space, because each loop called executeQuery and added an error message to the log.
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> Diffs
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>   services/storage/datamanagementmodel.cpp 0a68513 
>   services/storage/resourcemerger.cpp 41d6548 
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> Diff: http://git.reviewboard.kde.org/r/107318/diff/
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> Testing
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> The usual
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> Thanks,
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> Simeon Bird
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