Re: Entity Inheritance
Re: Entity Inheritance
- Subject: Re: Entity Inheritance
- From: Chuck Hill <email@hidden>
- Date: Sun, 30 Nov 2008 21:37:01 -0800
On Nov 30, 2008, at 9:19 PM, Ted Archibald wrote:
Ted "Plays with Fire" Archibald?
I suppose I'll clarify a bit
This app will have a small user base (<6), and will be in a
controlled environment. That said I don't intend on switching
objects that often, but approximately one in every 1000 objects
created would have to be changed due to data entry errors.
Ultimately the object type should be set for life, save for the
occasional error.
It seems to me that it'd be easier to handle the errors generated
when fetching/saving, rather than create and maintain a helper class.
Create a new object, copy the data over, detach the old one, attach
the new one. Or gamble. Your call.
Chuck
On Sun, Nov 30, 2008 at 8:52 PM, Mike Schrag
<email@hidden> wrote:
My personal advice... Don't do it.
2nd that .. It's almost always a red flag of an incorrect design.
Objects rarely change types, but they often change roles. It sounds
to me like maybe your model isn't quite right here and those objects
should have another relationship that is changing rather than the
intrinsic property of the object.
ms
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--
Chuck Hill Senior Consultant / VP Development
Practical WebObjects - for developers who want to increase their
overall knowledge of WebObjects or who are trying to solve specific
problems.
http://www.global-village.net/products/practical_webobjects
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