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Re: Core Data and unique IDs
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Re: Core Data and unique IDs


  • Subject: Re: Core Data and unique IDs
  • From: Stefan <email@hidden>
  • Date: Sun, 30 Jul 2006 22:20:25 +0200


Am 30.07.2006 um 21:37 schrieb Mike Zornek:

On 7/30/06 12:09 AM, "email@hidden" <email@hidden> wrote:

Just make a common super entity that has a uuid field that holds a
string value.
In the awakeFromInsert method, set the value of the uuid field using
CFUUID and its string uuid method.
It will then persist in all sub entities (and as long as they
subclass from that class)

You can then use it sort of like a globally unique-primary key of sorts.
Its very useful in my opinion.

This is exactly what I do and it works fine. Originally, I was using the
built in uuid field in Core Data but the problem with that is it is not set
until an object is saved to the store.

Thanks for all replies! Good to know, how to do it. _______________________________________________ Do not post admin requests to the list. They will be ignored. Cocoa-dev mailing list (email@hidden) Help/Unsubscribe/Update your Subscription: This email sent to email@hidden
References: 
 >Re: Core Data and unique IDs (From: Mike Zornek <email@hidden>)

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