Re: [Banshee-List] banshee synchronization code (in-depth)

[Christopher Friedt <cfriedt visible-assets com>]

Hi Bob,

Bob Copeland wrote:
> I may misremember something here so someone feel free to correct me,
> but the last time I looked at the sync code, what it did was this:
>
> 1) Make a list of every track on the DAP (the dap plugin does this)
> 2) Add all the songs you want to save to the list, either the new ones
> you just added or the whole library if you are syncing the whole
> library
> 3) Add all the songs you want to remove to a different list
> 4) Save everything in the lists by calling back into the DAP plugin
> (Synchronize() method)
>
> Synchronize depends on the plugin, but generally it looks at any songs
> in the remove queue, deletes them, then adds to the DAP all the tracks
> in the track list that aren't already on the DAP.  So I guess this is
> like a forward sync with deletes.  I'm not sure if any plugins copy
> tracks from the DAP back into the banshee library.

Right, that would be a forward synchronization. So that's implemented in 
the banshee main code it depends on the DAP plugin. Makes sense, because 
every DAP likely has a completely different method of managing its 
tracks (i.e. filesystem, proprietary, sqlite, etc).

Just out of curiousity, does the existing code within the DAP plugin do 
a hash on each of the songs that it pulls from the device (or, equally, 
select all the hashes from an existing DB on the DAP)?

This could be quite a bit of work, but I don't mind. It will be a good 
project to learn a bit about C# and brush up my SQL too.

~/Chris