Core data storage is repeated...
- by Kamlesh
Hi all,
I am trying to use Core Data in my application and I have been succesful in storing data into the entity.The data storage is done in the applicationDidFinishLaunchingWithOptions() method.But when I run the app again,it again gets saved.So how do I check if the data is already present or not??
Here is the code(Saving):-`NSManagedObjectContext *context = [self managedObjectContext];
NSManagedObject *failedBankInfo = [NSEntityDescription
insertNewObjectForEntityForName:@"FailedBankInfo"
inManagedObjectContext:context];
[failedBankInfo setValue:@"Test Bank" forKey:@"name"];
[failedBankInfo setValue:@"Testville" forKey:@"city"];
[failedBankInfo setValue:@"Testland" forKey:@"state"];
NSError *error;
if (![context save:&error]) {
NSLog(@"Whoops, couldn't save: %@", [error localizedDescription]);
}
(Retrieving):-
NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init];
NSEntityDescription *entity = [NSEntityDescription
entityForName:@"FailedBankInfo" inManagedObjectContext:context];
[fetchRequest setEntity:entity];
NSArray *fetchedObjects = [context executeFetchRequest:fetchRequest error:&error];
for (NSManagedObject *info in fetchedObjects) {
NSLog(@"Name: %@", [info valueForKey:@"name"]);
}
`
