[sync] Re: [dev] What should we do about GUIDs changing?

[Mikael Geijer]

Hi guys.
Following your work w interest, don't have time to contribute much right 
now. Just wanted to mention that a 32 byte GUID might cause problems 
when syncing with some devices. I'm a bit unsure what size the 
SYNML-specs recommend - or if the size is negotiated when devinfo is 
exchanged. I've seen at least one device with a 12 byte restriction. 
Just for your info. Sorry if this makes a mess.

Regards

/Mikael

Chuck Hagenbuch wrote:

> Quoting Chuck Hagenbuch <chuck at horde.org>:
>
>> So, any ideas on a better way to do this? Should we add an extra 
>> field for it to all our data stores? I'd rather not, where we can 
>> avoid it.
>
>
> To update this: Nag, Mnemo, and Kronolith now generate 32-character 
> item ids,
> and the GUID doesn't include the sharename. All of them are able, at 
> least with
> the primary backends, to get an item based simply on the GUID (i.e, the
> sharename isn't necessary).
>
>> Though, it occurs to me that the way the code is written, we delete 
>> and recreate the task when we move it between tasklists, so that'd 
>> have to be fixed too.
>
>
> Kronolith, Nag, and Mnemo also all now use a move() method to move 
> items between
> shares so that the GUID isn't changed. This means that you could sync 
> a task
> from your PDA to your default tasklist, edit it through Horde to 
> include more
> information and save it to a shared tasklist, and have the changes 
> sync back to
> your PDA with no problems, no link being broken, etc. Pretty nifty, 
> when we get
> there.
>
> The app I haven't touched is Turba, since it's a bit of a different 
> beast. We'll
> get to that one when we get there. I'd *really* like some help with 
> Turba and
> the things that are necessary for syncing, if anyone's interested.
>
> -chuck
>
> -- 
> "Regard my poor demoralized mule!" - Juan Valdez



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