[dev] Turba shares and SyncML

[Karsten Fourmont]

Hi,

I need some understanding of the Tuba share system to get it working 
properly with the SyncML code.

Currently mnemo,nag and kronolith syncs are done against the default 
share as defined in the respective applications (typically the username, 
like "karsten"). Ultimately this should be user configurable, but that's 
for later.

In Turba, things are a bit different.
$prefs->getValue('default_dir')

yield the name of the source.php source, like "localsql".

In such a source there are various "subsources"(?), like "karsten".

For turba_import, turba_replace, and turba_export this is just fine.

However syncing needs the turba_listBy functionality that lists all 
changes of a given sources (localsql) since a specific timestamp.

So how would I implement the correct listBy functionality for Turba?

First guess is to store the source (localsql) rather than the owner in 
the Turba history entry. Otherwise we have no way to find out changes in 
localsql.

But then the listBy need to do some "filtering" on the entries in the 
history, so that only the ones available for the specific user (the 
right "subsources") are returned. imho this needs to be similar to the 
Turba_Driver::search code. But how?

Can anyone provide me with input for this? A general description how 
turba sources work would be a start. I'd very much like to get this done 
for Horde 3.2.


Cheers,
  Karsten