Re: Using isMemberOfClass with a tree of subclass of NSManagedObject

FROM : Yoann GINI
DATE : Sat Jun 28 20:38:49 2008

Answer for the other mail (from Bill) : Yes, my objectsSet contain my 
object, and when I display the class type of this object in a NSLog I 
obtain the good thing (artist, song, modification).

Sorry for the conventions, this is just a "test code"...

root is the name of the class used for the entity and for the class 
represent the entity (that is the default behaviour when you create a 
new class for custom a existing entity in a .xcdatamodel)

The entity root is an abstract class what contain the common 
attributes, song and artist inherit from the root entity

Le 28 juin 08 à 20:15, mmalc crawford a écrit :

>
> On Jun 28, 2008, at 11:07 AM, Yoann GINI wrote:

>> @interface root :  NSManagedObject
>> @interface song :  root
>> @interface artist :  root
>> @interface modification :  NSManagedObject
>> This doesn't work with isKindOfEntity, used like that :
>>     NSEntityDescription*        rootDescription        = [[NSEntityDescription 
>> entityForName:@"root" inManagedObjectContext:[self 
>> managedObjectContext]] retain];
>> ...
>>     [rootDescription isKindOfEntity:[modEntry entity]]
>> It's always return NO...

>
>
> Is "root" the name of the *entity* or of the *class* used to 
> represent the entity?
> Whichever, it's helpful if you adhere to standard naming conventions 
> by capitalising the names of both.
>
> If the entity name is "root", then do the "song" and "artist" 
> entities inherit from that entity?
>
> mmalc
>