Fuck You CoreData!

Transcript

1. ¡Fuck You CoreData!
2. Twitter : @rcabamo Email: rcabamo@gmail.com • • Quién soy? Ricardo Caballero
3. Indice - Estructura de CoreData - Cosas chulas!
4. Estructura de CoreData NSManagedObjectContext NSPersistantStoreCoordinator NSManagedObject NSManagedObject NSManagedObject
5. CoreData & Xcode Inconvenientes - Actualización del modelo compleja y tediosa - Vista en formato “esquema” prácticamente inutil
6. Multiples contextos Forma tradicional
7. Multiples contextos En iOS 5 http://www.cocoanetics.com/2012/07/multi-context-coredata/
8. Multiples contextos En iOS 5 http://www.cocoanetics.com/2012/07/multi-context-coredata/ NSMangedObjectContext *temporaryContext = [[NSManagedObjectContext alloc] initWithConcurrencyType:NSPrivateQueueConcurrencyType]; temporaryContext.parentContext = mainMOC; [temporaryContext performBlock:^{ // do something that takes some time asynchronously using the temp context // push to parent NSError *error; if (![temporaryContext save:&error]) { // handle error } // save parent to disk asynchronously [mainMOC performBlock:^{ NSError *error; if (![mainMOC save:&error]) { // handle error } }]; }];
9. CoreData: annotation: sql connection fetch time: 34.3453s -com.apple.CoreData.SQLDebug 1 http://blog.artlogic.com/2013/01/07/optimizing-core-data-searches-and-sorts/ CoreData vs SQLite
10. ¡Fuck You CoreData!
12. ¡Cosas chulas!
13. MagicalRecord + (void) setupCoreDataStackWithStoreNamed: (NSString *)storeName; NSArray *peopleSorted = [Person findAllSortedByProperty:@"LastName,FirstName" ascending:YES]; ¿NSManagedObjectContext?
14. MagicalRecord Unit Test - (void)setUp; { [MagicalRecord setDefaultModelWithClass:[self class]]; [MagicalRecord setupCoreDataStackWithInMemoryStore]; } - (void)tearDown; { [MagicalRecord cleanUp]; } - (void)testSomeCalculationOnMyEntity; { MyEntity *testEntity = [MyEntity MR_createEntity]; float expectedValue = …; STAssert([testEntity customCalculation] == expectedValue, @"expected a good calculation"); } @end http://www.cimgf.com/2012/05/15/unit-testing-with-core-data/
15. Mogenerator
16. Mogenerator Foo/ | |- Foo.xcodeproj | |- Foo/ | | | |- en.lproj | | FooAppDelegate.h | | FooAppDelegate.m | | ViewController.h | | ViewController.m | | etc | | | |- CoreData/ | | | |- Human | | | | | |- <editable files will go here> | | | |- Machine/ | | | |- <system files will go here> | |- FooTests/ | |- etc
17. Mogenerator #import <CoreData/CoreData.h> #import "MTManagedObject.h" extern const struct NoteAttributes { __unsafe_unretained NSString *body; __unsafe_unretained NSString *date; __unsafe_unretained NSString *keywords; __unsafe_unretained NSString *title; } NoteAttributes; extern const struct NoteRelationships { } NoteRelationships; extern const struct NoteFetchedProperties { } NoteFetchedProperties; @interface NoteID : NSManagedObjectID {} @end @interface _Note : MTManagedObject {} + (id)insertInManagedObjectContext:(NSManagedObjectContext*)moc_; + (NSString*)entityName; + (NSEntityDescription*)entityInManagedObjectContext:(NSManagedObjectContext*)moc_; - (NoteID*)objectID; @property (nonatomic, strong) NSString* body; @property (nonatomic, strong) NSDate* date; @property (nonatomic, strong) NSString* keywords; @property (nonatomic, strong) NSString* title; @end @interface _Note (CoreDataGeneratedAccessors) @end Machine
18. Matt Thompson(@mattt) - Desarrollador en Heroku - AFNetworking - AFIncrementalStore