On 17.08.2007, at 09:46, Riccardo De Menna wrote:
I'm perfectly fine with one single table holding domain info... I
simply want to fetch from it and receive specific subclasses of the
main "domain" class.
It's called "Single Table Inheritance".
Create "Domain" Entity, make it static. Have an attribute
"topLevelDomain". Make a subclass of "Domain" with Single Table
Inheritance (it's an option in Entity Modeler), call it ComDomain and
set the qualifier to be "topLevelDomain = 'com'".
There you go. Whenever you query your database for "Domain" objects,
all domains with topLevelDomain = 'com' come back as ComDomain objects.
You have one table and whatever number of Entities using it.
cug
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