Direct link to ERSync talk: http://www.wocommunity.org/podcasts/wowodc/2011/Remote_sync.mov
> Hi Ricardo, > > You should listen to the ERSync presentation from WOWODC 2011 for ideas. > David will talk again about ERSync at WOWODC 2012, and Dan Beatty will > present something for the Cocoa and Cocoa Touch part that sync with > ERRest/ERSync. > >> Hi all, >> >> I'm writing an iOS app that will fetch data from an ERRest-based-WOApp. I >> want it to use CoreData on the iOS side and be as integrated as I can get it. >> The whole ERRest thing seems really built to that end and the CoreData stack >> is obviously an EO spin-off, but I did not find around some design >> guidelines to help me identify a correct course of action. >> >> In particular the very interesting "WWDC2010 Session 117 - Building a >> Server-driven User Experience", clearly identifies key points to follow, but >> I was not able to find any sample code to show the details of that design. >> I'm talking mostly about the iOS side as WO+ERRest basically do everything >> for me on the server side. >> >> Anyway, I'm building something based on those slides… so… >> >> On my WO side: >> >> I have an ERRest based app with a custom authentication system that allows >> for a login/logout/check action. These are simple DirectActions but with >> correct HTTP response codes, and they return the sessionID on success. The >> client app should store it in a cookie or provide it on any URL request, it >> doesn't matter. >> Various entity controllers that provide data in json/plist/xml/whatever with >> the added option to request only certain keys on show to minimize traffic if >> needed (my showFilter is limited to certain values server-side but the >> remaining ones can be on-demand so that, if I only need Person.firstName for >> 9000 records, I don't have to fetch unnecessary data. >> >> On my iOS side I have: >> >> A category that extends NSManagedObjectContext and provides: >> - (NSManagedObject *)localInstanceOfObject:(NSManagedObject *)iObject; >> >> A category that extends NSEntityDescription and provides: >> - (NSString *)route; >> - (BOOL)allowsFetch; >> - (BOOL)allowsInsert; >> - (BOOL)allowsUpdate; >> - (BOOL)allowsDelete; >> >> A category that extends NSManagedObject and provides: >> - (NSManagedObject *)localInstanceInContext:(NSManagedObjectContext >> *)context; >> - (NSDictionary *)toDictionary; >> >> A category that extends NSFetchRequest and provides: >> Incomplete… but would simply add a method that includes on optional endpoint >> for the fetch, as well as the qualifiers and sortorderings I want to pass to >> the server. >> >> A subclass of NSManagedObjectContext with overrides for: >> - (NSArray *)executeFetchRequest:(NSFetchRequest *)request error:(NSError >> **)error; >> - (BOOL)save:(NSError **)error; >> >> A subclass of NSManagedObject that provides a: >> @property (nonatomic, strong) NSString *endpoint; >> >> A model that mimics the EO-counterpart, only with waaaay less attributes. >> >> A subclass of my custom NSManagedObject for each entity >> >> This, I hope, is roughly what that session was suggesting and I can see it >> would work nicely. >> I'm trying to figure out how to implement the background operations that are >> to be performed by the two NSManagedObjectContext overrides. My idea is that >> the app just fetches on my CoreData stack and gets whatever data we already >> have persistently saved previously. But the fetch also initiates a server >> side check that eventually results in objects being updated in the UI. This >> has to be asynchronous on a custom RunLoop/thread and silently inform the >> various NSManagedObjectContexts that data has been updated from the server. >> >> Has anyone gone down this road? I'd love to look at some code samples, ideas >> or design guidelines. Anything really ;-) >> >> regards, >> Riccardo >> >> >> >> >> >> >> _______________________________________________ >> Do not post admin requests to the list. They will be ignored. >> Webobjects-dev mailing list ([email protected]) >> Help/Unsubscribe/Update your Subscription: >> https://lists.apple.com/mailman/options/webobjects-dev/probert%40macti.ca >> >> This email sent to [email protected] > > > ------------------------------------------------------------------------------ > Live Security Virtual Conference > Exclusive live event will cover all the ways today's security and > threat landscape has changed and how IT managers can respond. Discussions > will include endpoint security, mobile security and the latest in malware > threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ > _______________________________________________ > Wonder-disc mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/wonder-disc _______________________________________________ Do not post admin requests to the list. They will be ignored. 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