Re: A CoreData Limitation?
Re: A CoreData Limitation?
- Subject: Re: A CoreData Limitation?
- From: mmalcolm crawford <email@hidden>
- Date: Tue, 17 May 2005 14:13:36 -0700
On May 17, 2005, at 12:40 PM, Nicko van Someren wrote:
Then you make the Row object a custom subclass of NSManageObject
and implement a custom implementation of various bits of key-value
coding so that valueForKey: @"foo" actually does a fetch from the
set of cells with a predicate of cell.column.name == "foo" and
insertion with setValue:forKey: does the right thing too.
If you want to follow this pattern (and I'm still not sufficiently
clear on the actual task to advise on that) then the appropriate
mechanism here would be to use a fetched property:
<http://developer.apple.com/documentation/Cocoa/Reference/
CoreData_ObjC/Classes/NSFetchedPropertyDesc.html>
mmalc
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