Re: ADC Core Data article
Re: ADC Core Data article
- Subject: Re: ADC Core Data article
- From: Marcel Weiher <email@hidden>
- Date: Sun, 10 Apr 2005 00:06:56 +0200
On 9 Apr 2005, at 18:27, Scott Stevenson wrote:
Oh, and with *completely* proprietary datastores! So if you base
your persistent store on CoreData, your file-format is owned by
Apple. Cool! I think I'll pass.
What in the world are you talking about?
"An important thing to note about all of these formats: *Core Data
may change the way that it uses them at any time*. While it is easy
enough to look under the covers and see what is going on with the XML
and SQLite data formats, you should never modify the data in these
files yourself."
Emphasis added. OK, "completely" was overstating things a bit
(though not by much), apologies, but it is important to note that
while it may at first glance *look* like you're getting open data
formats (XML, SQLite), these are actually used as private datastores
by CoreData, with CoreData in control of the schema. So once again,
you don't "own" the data format, neither the XML DTD/Schema nor the
database schema.
And this appears to be not just an implementation detail, but policy
of the framework. As far as I can tell, this is different from just
about any other mapping frameworks, including Apple's own predecessors.
Marcel
--
Marcel Weiher Metaobject Software Technologies
email@hidden www.metaobject.com
Metaprogramming for the Graphic Arts. HOM, IDEAs, MetaAd etc.
1d480c25f397c4786386135f8e8938e4
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