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CoreData: How to create two separate in-memory stores?
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CoreData: How to create two separate in-memory stores?


  • Subject: CoreData: How to create two separate in-memory stores?
  • From: Frank Illenberger <email@hidden>
  • Date: Wed, 27 Jul 2005 17:57:23 +0200

Hi,

does anybody know if it is possible to use two separate in memory stores with one persistent store coordinator?

I use the following code to create an in-memory store:

NSPersistentStoreCoordinator *psc = [moc persistentStoreCoordinator];
id store = [psc addPersistentStoreWithType:NSInMemoryStoreType configuration:nil URL:nil options:nil error:nil];


This works fine. But if I try to add a second store with the same call, I get the following exception: "Can't add the same store twice"

So I thought, the two stores needed separate urls identifying them. But when I start putting names into the URL like in the following line


id store = [coordinator addPersistentStoreWithType:NSInMemoryStoreType configuration:nil URL: [NSURL URLWithString:@"storeA"] options:nil error:nil];



I get the following error: "Can't find table for entity Person in database at URL storeA"


So how do I create two separate in-memory stores in one PSC?


Cheers


Frank


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