New Library for CoreData

Transcript

1. New Library for CoreData Hiroshi Kimura potatotips #19
2. ໦ଜ ׮ Hiroshi Kimura iOS Developer eureka, Inc. @muukii0803
6. CoreStore https://github.com/JohnEstropia/CoreStore
7. Developer Hiroshi Kimura eureka, Inc. @muukii0803 John Estropia eureka, Inc. @JohnEstropia
8. Good things :)
9. Good things :) • SwiftͰॻ͔Ε͍ͯΔ
10. Good things :) • SwiftͰॻ͔Ε͍ͯΔ • ϝΠϯεϨουͷContext͸Read-Only
 ॻ͖ࠐΈ͸͢΂ͯSerialʹBackgroundContextͰߦΘΕΔͨΊɺ
 ҆શʹಈ࡞͢Δઃܭ
11. Good things :) • SwiftͰॻ͔Ε͍ͯΔ • ϝΠϯεϨουͷContext͸Read-Only
 ॻ͖ࠐΈ͸͢΂ͯSerialʹBackgroundContextͰߦΘΕΔͨΊɺ
 ҆શʹಈ࡞͢Δઃܭ • ෳ਺ͷSQLiteϑΝΠϧ͕࢖༻Մೳ (ConfigurationͰ෼͚Δ)
12. Good things :) • SwiftͰॻ͔Ε͍ͯΔ • ϝΠϯεϨουͷContext͸Read-Only
 ॻ͖ࠐΈ͸͢΂ͯSerialʹBackgroundContextͰߦΘΕΔͨΊɺ
 ҆શʹಈ࡞͢Δઃܭ • ෳ਺ͷSQLiteϑΝΠϧ͕࢖༻Մೳ (ConfigurationͰ෼͚Δ) • Observer͕༻ҙ͞Ε͍ͯΔ (FRCΛॻ͔ͳͯ͘ྑ͘ͳΔ)
13. Good things :) • SwiftͰॻ͔Ε͍ͯΔ • ϝΠϯεϨουͷContext͸Read-Only
 ॻ͖ࠐΈ͸͢΂ͯSerialʹBackgroundContextͰߦΘΕΔͨΊɺ
 ҆શʹಈ࡞͢Δઃܭ • ෳ਺ͷSQLiteϑΝΠϧ͕࢖༻Մೳ (ConfigurationͰ෼͚Δ) • Observer͕༻ҙ͞Ε͍ͯΔ (FRCΛॻ͔ͳͯ͘ྑ͘ͳΔ) • ϚΠάϨʔγϣϯΛαϙʔτ
14. Usage
15. DataStack struct Stack { static let data: DataStack = { let dataStack = DataStack(modelName: "CoreData") dataStack.addSQLiteStoreAndWait( "CoreData.sqlite", configuration: nil, resetStoreOnMigrationFailure: true ) return dataStack }() } SQLiteʹඥͮ͘DataStackΛੜ੒͠·͢
16. struct Stack { static let dataA: DataStack = { let dataStack = DataStack(modelName: "StackSetupDemo") dataStack.addSQLiteStoreAndWait( "CoreData.sqlite", configuration: "Configuration_A", resetStoreOnMigrationFailure: true ) return dataStack }() static let dataB: DataStack = {...} static let dataC: DataStack = {...} } Configuration͝ͱʹDataStackͷੜ੒͕Մೳ ࠓճ͸ConfigurationΛ࢖Θͳ͍ํ๏ͰਐΊ͍͖ͯ·͢ɻ
17. let people = Stack.data.fetchAll( From(MyPersonEntity), Where("age > 30"), OrderBy(.Ascending("name"), .Descending("age")), Tweak { (fetchRequest) -> Void in fetchRequest.includesPendingChanges = false } ) Fetch NSSortDescriptor, NSPredicate͸࢖Θͣʹࢦఆ
 ࡉ͔͍ઃఆ͸TweakͰࢦఆՄೳ
18. Stack.data.beginAsynchronous { (transaction) -> Void in let qrcode = transaction.create(Into(QRCode)) let codes = transaction.fetch( . . . ) transaction.commit() { result in switch result { case .Success(let hasChanges): success?() case .Failure(let error): failure?(error: error) } } } Create - Update
19. ViewController Fetch - Observe
20. Fetch
21. Controller͔ΒCoreDataΛ࢖͏࣌ͬͯ
22. Controller͔ΒCoreDataΛ࢖͏࣌ͬͯ NSFetchedResultsController ?
23. Controller͔ΒCoreDataΛ࢖͏࣌ͬͯ
24. Controller͔ΒCoreDataΛ࢖͏࣌ͬͯ ManagedObjectListController
25. var codes: ManagedObjectListController<QRCode> = { return Stack.data.observeObjectList( From(QRCode), Where("removed == false”), OrderBy(.Descending("readAt")) ) }() Controllerʹදࣔ͢ΔΦϒδΣΫτͷ৚݅Λࢦఆ
26. codes.numberOfSections() Sectionͷ਺Λऔಘ
27. codes.numberOfObjectsInSection(section) Section͔ΒObjectͷ਺Λऔಘ
28. let code = codes[indexPath] NSIndexPath͔ΒObjectΛऔಘ
29. Observe
30. codes.removeObserver(self) codes.addObserver(self) Observe Observeͷ։࢝ Observeͷऴྃ
31. protocol ManagedObjectListChangeObserver • WillChange • Insert • Delete • Update • Move • InsertSection • deleteSection • DidChange GenericsͰ࣮૷͞Ε͍ͯΔͨΊɺas ͕ෆཁ
32. Conclusion • DataStackΛϕʔεʹಈ࡞͢Δ • Fetchͷهड़͕γϯϓϧ • DataStack͝ͱʹγϦΞϧΩϡʔͰಈ࡞͢ΔͨΊ҆શ • ViewControllerͱͷ࿈ܞ͕؆୯ • ϚΠάϨʔγϣϯ͕ॆ࣮ 
 ΠϯΫϦϝϯλϧʹϚΠάϨʔγϣϯ͢Δ͜ͱ΋Մೳ • GenericsͰ࣮૷͞Ε͍ͯΔͨΊμΠφϛοΫΩϟετ͕ݮΒͤΔ
33. Swift2.0
34. Thank you :)
35. Thank you :)