iphone - Core data: any way to fetch multiple entities? -

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i'm getting started core data, , learning exercise i'm building app need display different types of objects in single table view.

as example, have entity "cheese" , unrelated entity "pirate". on main screen of app, user should able create either "cheese" or "pirate" instance add table view.

so, using core data editor i've created entities cheese , pirate... however, nsfetchrequest seems allow retrieve 1 type of entity @ time with:

nsfetchrequest *fetchrequest = [[nsfetchrequest alloc] init]; nsentitydescription *entity = [nsentitydescription entityforname:@"cheese" inmanagedobjectcontext:_context]; [fetchrequest setentity:entity];

is there way perform fetch retrieves "cheese" , "pirate" objects?

thanks.

what you're trying accomplished defining entity inheritance in model, "displayableobject" abstract class defined parent of "cheese" , "pirate".

then can perform fetch request on "displayableobject" entity , retrieve both entities' objects.

take article in apple documentation: https://developer.apple.com/library/ios/documentation/cocoa/conceptual/coredata/keyconcepts.html


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