Hi All,
I need some suggestions on an implementation.
Say I have an employee entity and a company entity in core data.
So employee and company are related to each other like this:
Employee <<---> Company
Now I am trying to right a manageRelationships method in each class,
something like this:
@interface Employee : NSManagedObject
- (void)manageRelationships;
@property (nonatomic, retain) Company *company; // for relationship
@property (nonatomic, retain) NSNumber *companyId; // acts as foreign
key
@end
@implementation Employee
@dynamic company;
@dynamic companyId;
- (void)manageRelationships
{
// prepare a predicate as @"companyId == %@",self.companyId
// execute a fetch request against Company entity
// map relationship using self.company = retrievedCompanyObject
}
Now I have few questions:
1. Is it safe to fire fetch request and map a relationship, as implemented
above, within a subclass of NSManagedObject?
2. Is their any better way to achieve it? (Idea behind above approach is- I
will be calling above method on each created managed object so that it
automatically manages and maps all associated relationships)
Please suggest.
Thanks,
Devarshi
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