I suspected as much, but I was curious and had to ask (^_^) Thanks to everyone for the replies!
Ramsey On Mar 31, 2010, at 10:54 PM, Chuck Hill wrote: > > On Mar 31, 2010, at 7:48 PM, Ramsey Lee Gurley wrote: > >> I can't see this being possible in Vertical or Horizontal, but with single >> table... could the qualifying attribute be updated to 'promote' an entity to >> a new class? > > F**k No! > > Do NOT try this. Use the Role pattern or something that won't make EOF > insane. > > > >> Let's say we have we have an abstract Person entity with three subclasses, >> Peasant, Knight, King. If I wanted to promote a knight to king, is it >> possible to simply update my type attribute from knight to king and EOF will >> start treating that record as a king instead of a knight? I would assume I >> would need to invalidate the existing knight object after saving changes so >> it could be refetched as a king... and if I had multiple instances, I'd need >> to invalidate it in those instances too... but is it possible? Or will EOF >> just flip out in the saveChanges() and refuse to do it? >> >> Just an academic question, of course (^_^) > > > You could maaaaybe get it to work if you invalidated enough things. But, > really, do you want hair on your palms? > > > Chuck > > > -- > 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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