Re: Read only attributes
Re: Read only attributes
- Subject: Re: Read only attributes
- From: Florijan Stamenkovic <email@hidden>
- Date: Mon, 08 Sep 2008 19:27:02 -0400
On Sep 08, 2008, at 18:48, Chuck Hill wrote:
Primary keys.
Oh yeah. That makes sense too... Hm, do you know if EOF throws a
validation exception when trying to modify a read only attribute?
IIRC there was talk against making primary keys class properties, one
of the arguments being that one should never modify them. But, if
they are read only, and EOF throws, then that would not have been
possible, no?
You can also mark them as such in the model to have EOF verify
there have not been any changes.
I am guessing that (if EOF indeed does not accept modifications of RO
attributes) the purpose of this is to preserve existing data, and in
situations in which data is created outside of EOF?
F
Chuck
On Sep 8, 2008, at 3:46 PM, Florijan Stamenkovic wrote:
Hi all,
I'm looking into EOAttribute.isReadOnly(). Docs point out that an
attribute is read only when it is derived (makes sense), but
mention no other circumstance. So, anyone knows any other
situation in which an attribute is read only?
Thanks,
F
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Chuck Hill Senior Consultant / VP Development
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