Re: [Tracker] Upcomming API review

[Jamie McCracken <jamiemcc blueyonder co uk>]

Mikkel Kamstrup Erlandsen wrote:
> 2006/7/8, Mikkel Kamstrup Erlandsen <mikkel kamstrup gmail com 
> <mailto:mikkel kamstrup gmail com>>:
>
>     I did a review of the upcomming API and I generally find it really
>     good. I have a few comments/questions though... - This is not a real
>     critique, just loose ramblings :-)
>
>     Search interface:
>      - I must admit I don't quite grok the Query method. It looks like
>     powerful stuff, and is prolly just a documentation problem (or lack
>     of braincells on my behalf)
>
>     Files interface:
>      - Why would developers want to create a file at a specific size?
>      - What is the advantages of creating files through tracker? To
>     handle mime-stuff?
>
>     File signals:
>      - There has been a lot of wishes for recursive watches with inotify
>     but rlove has denied any patches. It does not look like Tracker can
>     give recursive watches in this API - perhaps it will be a welcome
>     addition?
>
>     Playlist interface:
>      - Perhaps this interface can be replaced by a general list of first
>     class objects? Maybe this is actually just a special form of
>     tagging... Anyway just a thought :-)
>
>
>
> I had another thought about Tracker usage... I'm posting to tracker-list 
> just to make sure that the api can cover every possible use case I can 
> think of :-)
>
> What if Epiphany wants to use tracker to store bookmarks in? It would 
> probably do something like this:
>
>  1) Register WebBookmarks.url, WebBookmarks.title, WebBookmarks.foo, 
> WebBookmarks.bar types if they are not already registered. Using 
> GetRegisteredClasses() and checking if the array contains "WebBookmarks"??
> FIXME: Do RegisterType() not need a service to create the type on? 
> Anyway - we need a service name to Get the data later on...
>
> 2) Get all WebBookmarks with bookmark_id_array = Search.Metadata 
> ("Bookmarks", " WebBookmarks.url", "*", 0, 512), for each id get all 
> metadata with bookmark_data = Metadata.Get("what_service", id, "*"), 
> finally store all bookmark_data objects in a gtk.TreeStore with 
> corresponding Tracker ids.
>
> 3) Subscribe to the "Changed" signal on the Metadata interface and use 
> dbus filtering on some property (fixme: what property?) to receive only 
> WebBookmarks changes. Update the treemodel  when signal is received.
>
> 4) When the user edits bookmarks use Metadata.set (foo), FIXME: How do 
> we create a new bookmark?
>
> That should be all (modulo the fixmes),

We will have a dedicated bookmark dbus interface to make all the above 
easy to do.

Eventually all first class objects will have their own interface


--
Mr Jamie McCracken
http://jamiemcc.livejournal.com/