D16591: [XmlExtractor] Use QXmlStreamReader for better performance

[Stefan Brüns]

bruns created this revision.
bruns added reviewers: Frameworks, astippich.
Herald added projects: Frameworks, Baloo.
Herald added subscribers: Baloo, kde-frameworks-devel.
bruns requested review of this revision.

REVISION SUMMARY
  At least in the benchmark, QXmlStreamReader is more than twice as fast
  as QDomDocument.

TEST PLAN
  Before/after:
  RESULT : XmlExtractorTests::benchMarkXmlExtractor():
  
    810 msecs per iteration (total: 810, iterations: 1)
  
  RESULT : XmlExtractorTests::benchMarkXmlExtractor():
  
    288 msecs per iteration (total: 288, iterations: 1)

REPOSITORY
  R286 KFileMetaData

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D16591

AFFECTED FILES
  autotests/xmlextractortest.cpp
  src/extractors/xmlextractor.cpp

To: bruns, #frameworks, astippich
Cc: kde-frameworks-devel, #baloo, ashaposhnikov, michaelh, astippich, spoorun, ngraham, bruns, abrahams
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