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I think that Jon is asking whether he should give a version number to
his data model, and not whether he should create a second version of
his data model. If this is in fact his question, then I think the
answer is yes, because this will make it easier, if he needs to
migrate at some time in the future, to identify which data model
version he migrating from.
On Apr 7, 2009, at 2:41 PM, mmalc Crawford wrote:
On Apr 7, 2009, at 10:53 AM, Jon Munson II wrote:
I wasn't certain if, in order to utilize versioning later, that I
would need to mark the current model in some way. The Apple dox
didn't state one way or another, and I didn't wish to make an
assumption and find out later that I missed some important step
which would result in hours of headache.
It's not clear how the discussion indicates there would be "hours of
heartache"?
"The versioned model has a new runtime format (.momd) that is a
bundle containing individually compiled .mom files. You load
the .momd model just as you would a regular .mom file (using
NSManagedObjectModel’sinitWithContentsOfURL:).
To create a versioned model, you start with a normal model such as
that illustrated in Figure 4."
<http://developer.apple.com/documentation/Cocoa/Conceptual/CoreDataVersioning/Articles/vmVersioning.html#//apple_ref/doc/uid/TP40004714
>
It would certainly be trivial to test.
mmalc
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