On Jan 17, 2013, at 01:06, Kyle Sluder <k...@ksluder.com> wrote: > On Thu, Jan 17, 2013, at 12:31 AM, Laurent Daudelin wrote: >> Any reason why comparator blocks are not supported in NSSortDescriptor >> when used for an NSFetchRequest? I tried one unaware they were not >> supported and I got an exception: >> >> *** Terminating app due to uncaught exception >> 'NSInvalidArgumentException', reason: 'unsupported NSSortDescriptor >> (comparator blocks are not supported)' > > Guessing you're using a SQLite store? The SQLite store converts fetch > requests into SQL queries, and there's no way to express a block > comparator as a SQL query. > > See the section Fetch Predicates and Sort Descriptors of the Persistent > Store Features chapter of the Core Data Programming Guide: > https://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/CoreData/Articles/cdPersistentStores.html > > --Kyle Sluder
Thanks, Kyle. I thought it was something like that but my brain is in slow motion at this time after a long day... -Laurent. -- Laurent Daudelin AIM/iChat/Skype:LaurentDaudelin http://www.nemesys-soft.com/ Logiciels Nemesys Software laur...@nemesys-soft.com _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
