On Fri, 2007-11-23 at 17:43 +0000, Dr J A Gow wrote:
> Hello all,
> 
>       In the latest batch of commits to sync-engine I have added some changes
> to considerably improve efficiency of the sync path (see excerpt from
> the CHANGELOG below). I recommend updating your sync-engine to the
> latest SVN to pick up these changes.
> 
> It works great in both my testing and production environments so far,
> but knowing me I have probably broken something subtle :-) so please let
> me know if anything has regressed or starts misbehaving and I'll fix it
> as priority.
> 
>       John

Really great work John!


Btw... Could you take a look at this? :-)

http://sourceforge.net/tracker/index.php?func=detail&aid=1729381&group_id=30550&atid=399601



> Excerpt from CHANGELOG:
> 
> 20/11/2007 - 194900 Dr J A Gow
> ------------------------------
> 
> Removed nasty loop from synchandler and replaced it with a blocking
> event.
> 
> 22/11/2007 - 191000 Dr J A Gow
> ------------------------------
> 
> Hitherto the pathway of synced objects was horrible:
> text->dom->text->libxml2->xslt->text->dom->text. This was far from
> efficient. Removed all airsync.py dependencies on DOM, so that now
> all XML objects are processed by libxml2 from start to finish (a much
> thinner layer than dom/minidom). There is no conversion back to text
> anywhere in the sync path now except at the start when converting from
> wbxml, at the end when going back to wbxml, and when storing an object
> in the slow-sync database. This has a number of very positive
> side-effects in terms of also getting rid of two convoluted levels of
> indirection: formatapi.py->event/task/contact.py->parser.py. Now the
> path is formatapi.py straight to parser.py. Now only parser.py needs to
> actually make a decision as to the stylesheet to use - so any future
> additions to syncable types only require a new stylesheet and changes to
> parser.py.
> 
> We also get rid of event.py/task.py/contact.py.
> 
> Resulting code is much cleaner, less convoluted and easier to follow.
> 
> The speed increase when syncing big object lists is very, very
> noticeable :)
> 
> Broken the characteristic class out of xmlutil prior to removing
> xmlutil.py
> and placed it in its own 'characteristics.py'. Removed DOM dependence.
> 
> 
> 
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