[Sugar-devel] Datastore DBus API (was: Re: TuxPaint and saving to journal)

[Sascha Silbe]

On Mon, Jul 27, 2009 at 08:04:34PM -0400, Ton van Overbeek wrote:

> Yes, but it was/is not clear to me if this up-to-date.
Take a look at the "Current DBus API" section of my datastore redesign 
proposal [1] for a description of the current API (as of 0.84). The 
"Proposed datastore DBus API" section shows what might change for 0.86 
(not decided yet, but IMO quite likely).
Please consider wrapping low-level DBus stuff inside a C module that 
works similar to sugar.datastore.datastore. This would help other 
developers sugarize their applications (written in low-level languages).

With regard to metadata, the corresponding section in Berts guide [2] is 
the best description of current usage (see also "Command Line Arguments" 
[3]). It's a bit of a mess currently ("uid" vs "object_id", usage of 
"activity_id" for non-Session objects, ...) so I'm proposing moving to 
new names with clear definitions ("ID / metadata definitions" in [1]) 
for 0.86. This might be a bit painful for activities that use the 
datastore non-trivially, but those should only be a few (Browse, 
Library, GIAB).

Hope this answers at least some of your questions. Feel free to ask some 
more detailed ones so I can answer in depth.


[1] 
http://git.sugarlabs.org/projects/versionsupport-project/repos/mainline/blobs/master/datastore-redesign.html 
(follow "raw blob data")
[2] http://wiki.laptop.org/go/Low-level_Activity_API#Meta_Data
[3] 
http://wiki.laptop.org/go/Low-level_Activity_API#Command_Line_Arguments

CU Sascha

-- 
http://sascha.silbe.org/
http://www.infra-silbe.de/
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