[Kde-pim] Review Request: Improve contains queries.

[Till Adam]

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This is an automatically generated e-mail. To reply, visit:
http://git.reviewboard.kde.org/r/104338/
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Review request for KDEPIM-Libraries, Tobias Koenig, Volker Krause, and Christian Mollekopf.


Description
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Improve contains queries.

If we are searching for 2 characters or less, we assume substring
matches anywhere don't make much sense, so we use whole word matching
via the relatively fast bif:contains. If we are looking for longer
substrings, we can search for the substring anywhere, using a regex
filter, or for the substring at the start of words, using a faster regex
that limits to word boundaries. The later is useful in particul for
address completion, which is a frequent enough special case to warrant
optimizing it a bit.


Diffs
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  akonadi/contact/contactsearchjob.h be29fd698cd87a6318a691295e0e7b30829525f5 
  akonadi/contact/contactsearchjob.cpp f1e3fbf68a1d2fabbd8067f804035ae07d2a55ee 

Diff: http://git.reviewboard.kde.org/r/104338/diff/


Testing
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Thanks,

Till Adam

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