FetchObjectsForRelationshipSelector:
From EOFWiki
Jump to navigationJump to search
This method doesn't exist in EOF but could be coded this way:
- (NSArray *) _fetchObjectsForRelationshipSelector:(SEL) sel { NSArray *array; EOFetchSpecification *fetch; EOQualifier *q; EOClassDescription *desc; EOClassDescription *dstDesc; NSString *dstKey; NSString *key; key = NSStringFromSelector( sel); // get our class description, figure out what target entity // is used and what the back relationship is desc = [self eoClassDescription]; dstDesc = [desc classDescriptionForDestinationKey:key]; dstKey = [desc inverseForRelationshipKey:key]; // construct qualifier to fetch q = [[[EOKeyValueQualifier alloc] initWithKey:dstKey operatorSelector:EOQualifierOperatorEqual value:self] autorelease]; fetch = [EOFetchSpecification fetchSpecificationWithEntityName:[dstDesc entityName] qualifier:q sortOrderings:nil]; array = [[self editingContext] objectsWithFetchSpecification:fetch]; return( array); }