Short fetch request.

NSManagedObjectContext+SXConvenienceFetch.h

@class NSManagedObjectContext;


@interface NSManagedObjectContext(SXConvenienceFetch)

- (NSArray *)fetchObjectsWithEntityName:(NSString *)entityName includingSubentities:(BOOL)flag sortKey:(NSString *)sortKey ascending:(BOOL)ascending error:(NSError **)error;

@end

NSManagedObjectContext+SXConvenienceFetch.m

#import "NSManagedObjectContext+SXConvenienceFetch.h"


@implementation NSManagedObjectContext(SXConvenienceFetch)

- (NSArray *)fetchObjectsWithEntityName:(NSString *)entityName includingSubentities:(BOOL)flag sortKey:(NSString *)sortKey ascending:(BOOL)ascending error:(NSError **)error {
  NSFetchRequest *request = [NSFetchRequest fetchRequestWithEntityName:entityName];
  request.includesSubentities = flag;
  if (sortKey) {
    NSSortDescriptor *sortDescriptor = [NSSortDescriptor sortDescriptorWithKey:sortKey ascending:ascending];
    request.sortDescriptors = [NSArray arrayWithObject:sortDescriptor];
  }
  return [self executeFetchRequest:request error:error];
}

@end