Re: Copy managed object between contexts?
Re: Copy managed object between contexts?
- Subject: Re: Copy managed object between contexts?
- From: Jim Correia <email@hidden>
- Date: Sat, 13 Aug 2005 21:43:35 -0400
On Aug 13, 2005, at 9:19 PM, Chris Hanson wrote:
On Aug 13, 2005, at 5:40 PM, Jim Correia wrote:
It is left as an exercise to the reader to do the same for
relationships.
I would be extremely careful about "copying" relationships from one
managed object to another. Sometimes a relationship represents
association and other times a relationship represents containment.
[...]
For this reason I'd recommend against writing "generic" code to
"copy" relationships, and instead code carefully to be sure you get
exactly what you want in each specific situation.
Indeed. I have a generic attribute copying method in my code
(different from what I posted since it allows filtering of copied
attributes through a shouldCopyAttribute: method), but I have no
generic relationship copier. I've found the need to copy
relationships rare, and when I do, it is always a special case.
Jim
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