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NSExpressionForFunction - only works with NSSQLiteStoreType?

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NSExpressionForFunction - only works with NSSQLiteStoreType?

Subject: NSExpressionForFunction - only works with NSSQLiteStoreType?
From: Darren Wheatley <email@hidden>
Date: Sun, 20 Dec 2009 03:22:35 +0000

Hi,

I've been following the example NSExpression + core data code in the "Fetching Managed Objects" section of the "Core Data Programming Gudie" on the Apple Developer site:

http://developer.apple.com/mac/library/documentation/cocoa/Conceptual/CoreData/Articles/cdFetching.html

The sample code for pulling out a mininum or maximum entity value only seems to work if the core data store is set to NSSQLiteStoreType. If the core data store type is set to XML I get errors.

Is this correct, or should I be doing something different for XML stores?

Regards

Darren.


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