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Re: Core Data: How do you count records in a persistent store?

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Re: Core Data: How do you count records in a persistent store?

Subject: Re: Core Data: How do you count records in a persistent store?
From: mmalcolm crawford <email@hidden>
Date: Sun, 2 Apr 2006 12:21:45 -0700


On Apr 2, 2006, at 11:16 AM, Frederick C. Lee wrote:

How do you count (or determine empty) data from a persistent store (table)?

Execute a fetch for the entity in which you're interested, and count the returned array.

I've been trying to use the '@count' qualifier to determine if I have data in a particular MO entity: (gdb) po [[[[[managedObjectContext persistentStoreCoordinator] managedObjectModel] entities] objectAtIndex:6] valueForKey:@"name.@count"]

It's not clear why you would try doing this?

mmalc

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  >Core Data: How do you count records in a persistent store? (From: "Frederick C. Lee" <email@hidden>)




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