On 18 Nov 2021, at 19:44, Sean McBride via Cocoa-dev wrote:
> Hi all,
>
> Starting in Monterey, I see a new message logged by Core Data during
> persistent store migration:
>
> NSPredicate: Using NSExpression CAST(x,'Class') is deprecated and will be
> removed in a future release. 'MyClassName' should not be cast into a Class
> object.'
>
> This is due to my .xcmapping model where I set an attribute mapping to:
>
> FUNCTION(CAST("MyClassName", "Class"), "myMethodName:",
> $source.myOldAttributeName)
>
> If this isn't correct, how can I invoke a custom method to transform an old
> attribute into something new?
In case it helps anyone, my solution was to create an NSMigrationManager
category and put my custom methods in there and then set the attribute mapping
to this instead:
FUNCTION($manager, "myMethodName:", $source.myOldAttributeName)
Sean
_______________________________________________
Cocoa-dev mailing list (Cocoa-dev@lists.apple.com)
Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com
Help/Unsubscribe/Update your Subscription:
https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com
This email sent to arch...@mail-archive.com
