[dev] Namespaces and preferences

[Jan Schneider]

I just take a quick look at the implications that the improved 
namespace support has to existing settings and preferences.

Michael, as far as I understood you want to store folder preferences 
now including the namespace prefix, and provide an upgrade script for 
existing preferences. I think this is a viable solution. We could even 
convert preferences automatically on login, and store a flag in the 
user's preferences when we're done, to avoid duplicate conversions.

This would unfortunately make it impossible to run IMP 4.0 and 4.1 side 
by side. Thus I propose a different solution. We currently store folder 
preferences without the preamble string, that means without the folder 
and namespace prefix configured in servers.php. This is most probably 
pointing to the "personal" namespace in all cases. This already made it 
impossible to use folders from different namespaces. While this 
probably wasn't the best solution, we could avoid the conversion and bc 
break, if we still assume that all preference folders are in the 
personal namespace. That would mean no difference to what we have today 
but makes the switch much smoother.

The only place where this wouldn't work is the nav_polled setting (and 
maybe the expanded setting?), but that is not a biggie, because these 
preferences are additive. Once you reselected your folders in the new 
version, you can use them in both the old and the new version without 
interference.

If we take this approach, we should add a parameter to the flist 
methods to only show folders from the personal namespace, using these 
listings in the preference UI.

Jan.

-- 
Do you need professional PHP or Horde consulting?
http://horde.org/consulting/