site_archiver@lists.apple.com Delivered-To: cocoa-dev@lists.apple.com Hi, On 2006-12-30, at 17:12, crosbie@inivai.com wrote: Two Sync Services questions: 1. I'm developing a sync system in which a "browser" application syncs data simultaneously with a mutable list of dependent applications (the browser app. pushes to the sync engine and the dependent apps. pull). By mutable, I mean that the particular list of dependent applications may change between sync occasions - i.e. some apps-to-sync-with could be deleted from the list, others could be added. 2. Jonathon Mah me@JonathonMah.com _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/site_archiver%40lists.apple... Has anyone experience setting up such a system? What Sync Services methods are relevant? I've considered registering and unregistering clients, but that seems clumsy, if not plain wrong. Or perhaps I should be thinking of filters? Each application shouldn't care about any others. They all just sync with the central Sync Services database ("The Truth"). Sync Services deals with syncing "entities", not applications, so application A could sync bookmarks and photos, and application B could sync photos and address contacts, for example. To get apps to sync "simultaneously", you register a callback when your application launches. Using the app examples above, if app A starts to sync its bookmarks and photos, app B will get a callback telling it that someone else is syncing photos (but not bookmarks, because app B doesn't deal with bookmarks). <http://developer.apple.com/documentation/Cocoa/Conceptual/ SyncServices/Articles/AlertHandlers.html> Is it possible to sync with a predicate-style filter? Yes. <http://developer.apple.com/documentation/Cocoa/Conceptual/ SyncServices/Articles/Filtering.html> This email sent to site_archiver@lists.apple.com