Re: Migration with abstract entities

2009-01-18 Thread Samuel Strupp
Ok, i think i do the migration manually. Thanks for the reply. It seems that the automatic mapping for core data models is not as good as it could be, especially for complex data models. Sam Am 17.01.2009 um 08:13 schrieb Quincey Morris: On Jan 16, 2009, at 21:00, Sean McBride wrote: Quin

Re: Migration with abstract entities

2009-01-16 Thread Quincey Morris
On Jan 16, 2009, at 21:00, Sean McBride wrote: Quincey Morris (quinceymor...@earthlink.net) on 2009-01-16 6:53 PM said: The bad news is that abstract entities will cause NSPersistentDocument's Save As to break, since it apparently uses a Core Data migration to implement Save As, with an auto

Re: Migration with abstract entities

2009-01-16 Thread Sean McBride
Quincey Morris (quinceymor...@earthlink.net) on 2009-01-16 6:53 PM said: >The bad news is that abstract entities will cause >NSPersistentDocument's Save As to break, since it apparently uses a >Core Data migration to implement Save As, with an auto-generated >mapping model, which of course fails t

Re: Migration with abstract entities

2009-01-16 Thread Quincey Morris
On Jan 16, 2009, at 02:51, Samuel Strupp wrote: does anybody know, how to migrate an object model with abstract entities correctly? The compiler throws errors for the mapping model "can't auto generate value expression with nil mapping name". I found no documentation about

Migration with abstract entities

2009-01-16 Thread Samuel Strupp
Hi, does anybody know, how to migrate an object model with abstract entities correctly? The compiler throws errors for the mapping model "can't auto generate value expression with nil mapping name". I found no documentation about migration with abstract entities in core data