Re: Core Data: unidirectional relationships
Re: Core Data: unidirectional relationships
- Subject: Re: Core Data: unidirectional relationships
- From: Quincey Morris <email@hidden>
- Date: Wed, 13 Feb 2008 12:33:16 -0800
On Feb 13, 2008, at 11:59, Quincey Morris wrote:
What about:
Entity: Department
Attributes: ...whatever...
Relationships:
headOfDepartment --> Role
viceHeadOfDepartment --> Role
pointyHairedBoss --> Role
dilbert --> Role
other Employees -->> Employee
Entity: Role
Attributes: ...whatever...
Relationships:
department --> Department
employee --> Employee
(add role-type attribute or subclass Role if needed)
Entity: Employee
Attributes: ...whatever...
Relationships:
department --> Department
roles -->> Role
That's basically the same as your "ugly" version, just less ugly.
Er, NVM. I thought I had all the inverses covered, but I messed up
the one that actually matters (Role.department). Fixing that would
require subclassing Role, and where *that* would land on the ugliness
scale is hard to predict.
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