我々のRealmはどこからやってくるのか

Transcript

1. զʑ ओޠ͕େ͖͍ ͷ 3FBMN͸Ͳ͔͜Β΍ͬ ͯ͘Δͷ͔ 3FBMN
   8PSME
   5PVS
   0TBLB
   
   JE4JYFJHIU

2. ࣗݾ঺հ w JE4JYFJHIU
   !UPNPIJ@SP
   
   ੢ଜ
   ༑༟
   w גࣜձࣾ͸ͯͳ
   ΞϓϦέʔγϣϯΤϯδχΞ
   w ೥݄
   த్ೖࣾ
   w

   ฏ೔͸ຖ೔ʮ೔هʯΛॻ͍͍ͯ·͢
   w IUUQTJYFJHIUIBUFOBCMPHDPN

3. ͸ͯͳͰԿΛ΍͖͔ͬͯͨ
   αʔϏεએ఻ίʔφʔ w .BDLFSFM
   w IUUQTNBDLFSFMJP
   w ΧΫϤϜ
   "1*ɺΞϓϦ
   

   w IUUQTLBLVZPNVKQ
   w ͸ͯͳϒϩά
   ΞϓϦ
   w IUUQIBUFOBCMPHDPNHVJEFBQQ
   w ͸ͯͳϒοΫϚʔΫ
   ΞϓϦ
   w IUUQCIBUFOBOFKQHVJEFBQQ

4. ͓அΓ w 4XJGUͱ+BWB͕ೖΓཚΕ·͢
   w J04"OESPJEܦݧऀͷํʹ఻ΘΓ͍ͨͱ͍͏ؾ࣋ͪ
   w ଞͷϓϥοτϑΥʔϜͷํ͝ΊΜͳ͍͞
   w ͱ͍͍ͭͭ΋4XJGUଟΊͰ͢
   w

   ίʔυΛͤ·͍εϥΠυʹ͓͞ΊΔʹ͸ɺදݱྗͷ๛ ͔ͳ4XJGU͕༗ར

5. 3FBMN͸
   Ͳ͔͜Β΍ͬͯ͘Δͷ͔

6. 3FBMNΠϯελϯε͸
   Ͳ͔͜Β΍ͬͯ͘Δͷ͔

7. ૉ๿ͳํ๏ let realm = try! Realm() Realm realm = Realm.getDefaultInstance();

   4XJGU +BWB

8. ΋͏ͪΐͬͱෳࡶͳྫ let configuration = Realm.Configuration(fileURL: url) let realm = try!

   Realm(configuration: configuration) RealmConfiguration configuration =
 new RealmConfiguration.Builder()
 .name("data")
 .build(); Realm realm = Realm.getInstance(configuration); 4XJGU +BWB

9. Ұൠతͳ$POpHVSBUJPO RealmConfiguration config = new RealmConfiguration.Builder()
 .name("myrealm.realm")
 .encryptionKey(getKey())
 .schemaVersion(42)
 .modules(new

   MySchemaModule())
 .migration(new MyMigration())
 .build();
 
 Realm realm = Realm.getInstance(config); +BWB

10. ઃఆͷΠϯελϯε͸Ͳ͜ʹ ࣋ͭͷ͕ྑ͍ͷͩΖ͏͔
    

11. ྫ͑͹4JOHMFUPO class Locator { private static let instance = Locator()

    public var realmConfiguration: Realm.Configuration { var configuration = Realm.Configuration() configuration.fileURL = configuration.fileURL! .deletingLastPathComponent() .appendingPathComponent("main.realm") return configuration } } 4XJGU

12. ઃఆΛ࡞Βͳͯ͘Α͘ͳͬͨ let configuration = Locator.instance.realmConfiguration let realm = try! Realm(configuration:

    configuration) RealmConfiguration configuration = Locator.getInstance().getRealmConfig(); Realm realm = Realm.getInstance(configuration); 4XJGU +BWB

13. 3FBMN΋ఏڙͯ͠͠·͏ class Locator { static let instance = Locator() public

    var realmConfiguration: Realm.Configuration { return // Realm.ConfigurationΛ࡞Δ } public var realm: Realm { return try! Realm(configuration: realmConfiguration) } } 4XJGU

14. ͔ͳΓ୯७ԽͰ͖ͨ let realm = Locator.instance.realm 4XJGU +BWB Realm realm =

    Locator.getInstance().getRealm();
15. None

16. <࠶ܝ>
    -PDBUPS class Locator { static let instance = Locator() public

    var realmConfiguration: Realm.Configuration { return // Realm.ConfigurationΛ࡞Δ } public var realm: Realm { return try! Realm(configuration: realmConfiguration) } } 4XJGU

17. ߽՚ͳ-PDBUPS public class Locator { // ɾɾɾུɾɾɾ public RealmConfiguration getRealmConfiguration()

    { … } public Realm getRealm() { … } public APIClient getApiClient() { … } public Tracker getTracker() { … } public UserRepository getUserRepository() { … } public FriendRepository getFriendRepository() { … } public ItemRepository getItemRepository() { … } } +BWB

18. ͳΜͰ΋͘ΕΔ܅

19. 4FSWJDF
    -PDBUPS
    1BUUFSO

20. 4FSWJDF
    -PDBUPS w ͋ΔίϯϙʔωϯτΛ࢖͏ͷʹผͷෳ਺ͷί ϯϙʔωϯτ͕ඞཁͳ৔߹ " # $

21. 4FSWJDF
    -PDBUPS w ͋Δίϯϙʔωϯτ͸ඞཁͳίϯϙʔωϯτ Λ୳ͯ͘͠ΕΔԿ͔͚ͩ஌͍ͬͯΕ͹Α͍ͱ ͍͏͜ͱʹ͢Δ " # $ 4-

22. ඞཁͳίϯϙʔωϯτΛ
    ୳ͯ͠ ࡞ͬͯ ͘ΕΔ
    Կ͔Λ༻ҙ͢Δ

23. 4FSWJDF
    -PDBUPS
    1BUUFSO

24. ͱ͜ΖͰςετ͍ͨ͠ w ͨͱ͑͹"1*͔Β+40/Λऔಘͯ͠ɺ3FBMN ʹਖ਼͘͠อଘ͞ΕΔ͔Λ֬ೝ͍ͨ͠

25. 3FQPTJUPSZͷྫ class UserRepository { private let realm = Locator.instance.realm private

    let apiClient = Locator.instance.apiClient func load(byID id: String, callback: (User) -> Void) { // APIݺͼग़͠ } private func save(json: [AnyHashable: Any]) { // Realmʹอଘ } } 4XJGU

26. ࠔΓͦ͏ w ςετͰ͚ͩ
    JONFNPSZ
    ͷ
    3FBMN
    Λ࢖ ͍ͨ͘ͳͬͨΒʁ
    w "1*ݺͼग़͠Λελϒͨ͘͠ͳͬͨΒʁ

27. <࠶ܝ>
    3FQPTJUPSZͷྫ class UserRepository { private let realm = Locator.instance.realm private

    let apiClient = Locator.instance.apiClient func load(byID id: String, callback: (User) -> Void) { // APIݺͼग़͠ } private func save(json: [AnyHashable: Any]) { // Realmʹอଘ } } 4XJGU

28. -PDBUPSΛίϯετϥΫλʹ ౉ͤΔΑ͏ʹ͢Δ public class UserRepository {
 private final Realm realm;


    private final APIClient apiClient;
 
 public UserRepository(Locator locator) {
 realm = locator.getRealm();
 apiClient = locator.getApiClient();
 }
 } +BWB

29. -PDBUPSΛࠩ͠ସ͑ΒΕΔΑ ͏ʹΠϯλʔϑΣʔεʹ͢Δ interface ILocator {
 RealmConfiguration getRealmConfiguration();
 Realm getRealm();
 APIClient

    getApiClient();
 Tracker getTracker();
 
 UserRepository getUserRepository();
 FriendRepository getFriendRepository();
 ItemRepository getItemRepository();
 } +BWB

30. *-PDBUPSΛίϯετϥΫλʹ ౉ͤΔΑ͏ʹ͢Δ public class UserRepository {
 private final Realm realm;


    private final APIClient apiClient;
 
 public UserRepository(ILocator locator) {
 realm = locator.getRealm();
 apiClient = locator.getApiClient();
 }
 } +BWB

31. .PDL-PDBUPSΛ࡞Δ public class MockLocator implements ILocator {
 @Override
 public RealmConfiguration

    getRealmConfiguration() { return // in-memory Configuration }
 
 @Override
 public Realm getRealm() { return Realm.getInstance(realmConfiguration()); }
 
 @Override
 public APIClient getApiClient() { return // MockApiClient }
 
 @Override public Tracker getTracker() { … }
 @Override public UserRepository getUserRepository() { … }
 @Override public FriendRepository getFriendRepository() { … }
 @Override public ItemRepository getItemRepository() { … }
 } +BWB

32. ςετͷ༷ࢠ let locator = MockLocator() let repository = UserRepository(locator) 4XJGU

    +BWB Locator locator = new MockLocator();
 UserRepository repository =
 new UserRepository(locator);

33. 
    ΍ͬͨ͜ͱ w 3FQPTJUPSZ͕ίϯετϥΫλͰ4FSWJDF
    -PDBUPSΛड͚औΕΔΑ͏ʹͨ͠
    w 4FSWJDF
    -PDBUPSͷΠϯλʔϑΣʔεΛ༻ ҙͯࠩ͠͠ସ͑ΒΕΔΑ͏ʹͨ͠

34. ͜͏ͩͬͨͷ͕ class UserRepository { private let realm: Realm private let

    apiClient: APIClient init() { realm = Locator.instance.realm apiClient = Locator.instance.apiClient } } 4XJGU

35. ͜͏ͳΓ·ͨ͠ class UserRepository { private let realm: Realm private let

    apiClient: APIClient init(locator: LocatorProtocol) { realm = locator.realm apiClient = locator.apiClient } } 4XJGU
36. None

37. <࠶ܝ>
    .PDL-PDBUPSΛ࡞Δ public class MockLocator implements ILocator {
 @Override
 public RealmConfiguration

    getRealmConfiguration() { return // in-memory Configuration }
 
 @Override
 public Realm getRealm() { return Realm.getInstance(realmConfiguration()); }
 
 @Override
 public APIClient getApiClient() { return // MockApiClient }
 
 @Override public Tracker getTracker() { … }
 @Override public UserRepository getUserRepository() { … }
 @Override public FriendRepository getFriendRepository() { … }
 @Override public ItemRepository getItemRepository() { … }
 } +BWB

38. ྫྷ੩ʹߟ͑Δͱʜ w ςετ༻ͷ3FBMNͱ"1*$MJFOU͕ཉ͍ͩ͠ ͚ͩͬͨ
    w 4FSWJDF
    -PDBUPSͷΠϯλʔϑΣʔεʹै ͏ͨΊʹͳΜͰ͜ΜͳʹେྔʹίʔυΛॻ͔ ͳ͍ͱ͍͚ͳ͍ͷ͔

39. զʑ͕ཉ͔ͬͨ͠΋ͷ protocol UserRepositoryDependency { var realmConfiguration: Realm.Configuration { get }

    var realm: Realm { get } var apiClient: APIClient { get } } 4XJGU

40. ͦ΋ͦ΋3FQPTJUPSZ͕͜ͷ ΠϯλʔϑΣʔεΛड͚औΕ ͹ྑ͔ͬͨͷͰ͸ͳ͍͔

41. ͜͏͍͏ײ͡ class UserRepository { private let realm: Realm private let

    apiClient: APIClient init(dependency: UserRepositoryDependency) { realm = dependency.realm apiClient = dependency.apiClient } } 4XJGU

42. Α͘ͳͬͨ.PDL-PDBUPS class MockLocator: UserRepositoryDependency { var realmConfiguration: Realm.Configuration { return

    .Configuration(inMemoryIdentifier: "test") } var realm: Realm { return try! Realm(configuration: realmConfiguration) } var apiClient: APIClientProtocol { return new MockApiClient(); } } 4XJGU

43. 4FSWJDF
    -PDBUPS͸͜ͷΠϯ λʔϑΣʔε
    l΋z
    ࣮૷͢Δ class Locator: LocatorProtocol, UserRepositoryDependency { var realmConfiguration: Realm.Configuration

    { … } var realm: Realm { … } var apiClient: APIClient { … } var tracker: Tracker { … } var userRepository: UserRepository { … } var friendRepository: FriendRepository { … } var itemRepository: ItemRepository { … } } 4XJGU

44. ࠷ॳͷґଘؔ܎ 6TFS3FQPTJUPSZ -PDBUPS

45. ΠϯλʔϑΣʔεΛಋೖͨ͋͠ ͱͷґଘؔ܎ 6TFS3FQPTJUPSZ *-PDBUPS -PDBUPS

46. ৽͍͠ґଘؔ܎ 6TFS3FQPTJUPSZ -PDBUPS 6TFS3FTQPTJUPSZ% FQFOEFODZ

47. ґଘؔ܎͕ٯసͨ͠

48. %FQFOEFODZ
    *OWFSTJPO
    1SJODJQMF

49. ґଘੑٯసͷݪଇ %*1

50. ґଘੑٯసͷݪଇ
    %*1 w ্ҐͷϞδϡʔϧ͸ԼҐͷϞδϡʔϧʹґଘ ͯ͠͸ͳΒͳ͍ɻͲͪΒͷϞδϡʔϧ΋ʮந ৅ʯʹґଘ͢΂͖Ͱ͋Δɻ
    w ʮந৅ʯ͸࣮૷ͷৄࡉʹґଘͯ͠͸ͳΒͳ͍ɻ ࣮૷ͷৄࡉ͕ʮந৅ʯʹґଘ͢΂͖Ͱ͋Δɻ

51. ࠷ॳͷґଘؔ܎ 6TFS3FQPTJUPSZ -PDBUPS

52. %*1 Ұ෦ Λద༻ͨ͠ґଘؔ܎ 6TFS3FQPTJUPSZ *-PDBUPS -PDBUPS

53. %*1Λద༻ͨ͋͠ͱͷґଘؔ܎ 6TFS3FQPTJUPSZ -PDBUPS 6TFS3FTQPTJUPSZ% FQFOEFODZ

54. ґଘੑٯసͷݪଇ %*1

55. ͱ͜ΖͰίϯετϥΫλΛ࢖ ͑ͳ͍৔߹͸Ͳ͏͢Ε͹

56. ΞϓϦ։ൃͰίϯετϥΫλ͕ ࢖͍ʹ͍͘ͱ͜Ζ w J04
    w 7JFX$POUSPMMFS
    w "OESPJE
    w "DUJWJUZ
    

    w 'SBHNFOU

57. ߟ͑ΒΕΔํ๏ w ϓϩύςΟʹ୅ೖ͢Δ
    w ηολʔΛ༻ҙ͢Δ
    w ॳظԽϝιουΛ༻ҙ͢Δ

58. 7JFX$POUSPMMFSͩͱ͜͏͍ ͏͜ͱΛ͠·͢ΑͶ override func prepare(for segue: …) { if let

    vc = segue.destination as? NextViewController { vc.locator = Locator.instance } } 4XJGU

59. ܽ఺ w มߋ͢΂͖Ͱͳ͍ϓϩύςΟΛ͖ͪΜͱӅṭ Ͱ͖ͳ͍
    w ঢ়ଶ͕มΘΔ͔΋͠Εͳ͍ΦϒδΣΫτͱͷ ΍ΓͱΓ͸ۤ௧͕൐͏

60. ΋͏Ұ౓࠷ॳͷ໰͍ʹ໭Δ

61. 3FBMNΠϯελϯε͸
    Ͳ͔͜Β΍ͬͯ͘Δͷ͔

62. 3FBMNΠϯελϯε͸
    4FSWJDF
    -PDBUPS
    ͔Β΍ͬͯ͘Δ

63. 7JFX$POUSPMMFS͸
    4FSWJDF
    -PDBUPSʹ
    ґଘ͍ͯ͠Δ

64. ͜ͷґଘΛͲ͏΍ͬͯղܾ͢ Ε͹͍͍ͷ͔

65. %FQFOEFODZ
    *OKFDUJPO
    1BUUFSO

66. https://www.martinfowler.com/articles/injection.html

67. http://kakutani.com/trans/fowler/injection.html

68. ґଘΦϒδΣΫτ஫ೖ
    ґଘੑ஫ೖ

69. 7JFX$POUSPMMFS͸
    4FSWJDF
    -PDBUPSʹ
    ґଘ͍ͯ͠Δ

70. "
    ͸
    #
    ʹґଘ͍ͯ͠Δ

71. #
    ͸
    "
    ͷ
    ґଘ ΦϒδΣΫτ Ͱ͋Δ

72. ґଘΦϒδΣΫτ
    
    %FQFOEFODZ

73. %FQFOEFODZ
    ґଘΦϒδΣΫτ
    *OKFDUJPO
    ஫ೖ

74. ஫ೖʁ

75. ґଘΦϒδΣΫτΛ
    ඞཁͱ͍ͯ͠Δ
    ίϯϙʔωϯτʹ౉͢

76. Ώ͔͍ͳ஥ؒͨͪ w $POTUSVDUPS
    *OKFDUJPO
    w 1SPQFSUZ 4FUUFS
    *OKFDUJPO
    w *OUFSGBDF
    *OKFDUJPO
    w

    .FUIPE
    *OKFDUJPO
    w BOE
    NPSFʜ

77. ͳΜ͔΍΍ͦ͜͠͏

78. ͖ͬ͞΍Γ·ͨ͠ΑͶ

79. $POTUSVDUPS
    *OKFDUJPO let locator = Locator.instance let repository = UserRepository(locator: locator)

    4XJGU +BWB Locator locator = Locator.getInstance();
 Repository repository = new UserRepository(locator);

80. 1SPQFSUZ
    *OKFDUJPO override func prepare(for segue: …) { if let vc

    = segue.destination as? NextViewController { vc.locator = Locator.instance } } 4XJGU

81. ʮґଘΦϒδΣΫτΛ
    ඞཁͱ͍ͯ͠Δ
    ίϯϙʔωϯτʹ౉͢ʯ
    ͜ͱʹ໊લΛ෇͚͚ͨͩ

82. l%FQFOEFODZ
    *OKFDUJPO
    JT
    B
     EPMMBS
    UFSN
    GPS
    B
    DFOU
    DPODFQUz http://www.jamesshore.com/Blog/Dependency- Injection-Demystified.html - James Shore

83. %FQFOEFODZ
    ґଘΦϒδΣΫτ
    *OKFDUJPO
    ஫ೖ

84. 1SPQFSUZ
    *OKFDUJPOΛ
    ফ͍ͨ͠ w ܽ఺
    w มߋ͢΂͖Ͱͳ͍ϓϩύςΟΛ͖ͪΜͱӅ ṭͰ͖ͳ͍
    w ঢ়ଶ͕มΘΔ͔΋͠Εͳ͍ΦϒδΣΫτͱ ͷ΍ΓͱΓ͸ۤ௧͕൐͏

85. ࠓճͷ࡞ઓ w 1SPUPDPM
    &YUFOTJPO
    J04
    w %*
    'SBNFXPSL
    w %BHHFS̉ "OESPJE

    
    w J04΋σϑΝΫτελϯμʔυ΄͍͠

86. 1SPUPDPM
    &YUFOTJPO
    J04 w *OUFSGBDFͷσϑΥϧτ࣮૷Λ࢖ͬͯɺͦΕ Λ࣮૷͢ΔίϯϙʔωϯτʹґଘΦϒδΣΫ τΛ஫ೖ͢Δ
    w σϑΥϧτϝιου͸+BWB
    ͔ΒͳͷͰ "OESPJEͰ͸Ͱ͖ͳ͍

87. 1SPUPDPM
    &YUFOTJPO protocol WithLocator { var locator: LocatorProtocol { get }

    } extension WithLocator { var locator: LocatorProtocol { return Locator.instance } } 4XJGU

88. 1SPUPDPM
    &YUFOTJPO class RootViewController: UIViewController, WithLocator { override func viewDidAppear(_ animated:

    Bool) { super.viewDidAppear(animated) // ຊ౰͸ userRepository ࢖͑͹ྑͦ͞͏Ͱ͢Ͷ locator.apiClient.fetchUser(byID: “xxxx”) { [weak self] result in try! locator.realm.write { self?.locator.realm.add(User(json: result.json)) } } } } 4XJGU

89. ิ଍ w 4FSWJDF
    -PDBUPS
    ͡Όͳͯ͘ґଘΦϒδΣ ΫτΛ௚઀஫ೖͯ͠΋Α͍
    w ґଘΛऔಘ͢ΔϓϩύςΟ͕ಥવੜ͑ΔͷͰ ίʔυ͕௥͍ʹ͘͘ͳΔ

90. https://speakerdeck.com/yashigani/dependency- injection-in-ios-apps

91. %BHHFS̉
    "OESPJE w (PPHMF੍ͷ%*
    'SBNFXPSL
    w $PNQPOFOU͕ґଘπϦʔͷ؅ཧ
    w .PEVMF͕ґଘͷڙڅ
    4FSWJDF
    -PDBUPS
    

    w ͱ͖ͬͭʹ͍͕֮͑͘Δͱґଘ؅ཧ͕ͱͯ΋ ָʹͳΔ

92. "DUJWJUZʹ*OKFDU͢Δ༷ࢠ public class MainActivity extends AppCompatActivity {
 @Inject
 Locator mLocator;


    
 @Override
 public void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 
 ((App) getApplicationContext())
 .getApplicationComponent()
 .newActivityComponentBuilder()
 .activity(this)
 .build()
 .inject(this);
 }
 } +BWB

93. ґଘ͕ଟ͍ͱ public class MainActivity extends AppCompatActivity {
 @Inject
 Locator mLocator;


    
 @Inject
 Realm mRealm;
 
 @Inject
 ApiClient mApiClient;
 
 @Inject
 UserRepository mUserRepository;
 
 @Inject
 FriendRepository mFriendRepository;
 } +BWB

94. ิ଍ w ґଘΛϑϨʔϜϫʔΫʹ؅ཧͯ͠΋Β͑Δͱ ָ
    w 1SPWJEF3FBMNΛJOKFDUͯ͠ผεϨου Ͱ࢖͏ͳͲ΋؆୯
    w %*΁ͷཧղ͕ඞཁͰɺϑϨʔϜϫʔΫࣗମ΋ ෳࡶͳͷͰɺಋೖ࣌ͷϋʔυϧ͸ߴ͍

95. 
    ;Γ͔͑Γ

96. ;Γ͔͑Γ w 4FSWJDF
    -PDBUPSΛ࢖ͬͯؾʹ͢Δ΂͖૬ खΛݶఆ͢Δज़ʹ͍ͭͯ࿩͠·ͨ͠
    w *P$%*1ʹ͍ͭͯগ͠৮Ε·ͨ͠
    w %*ʹ͍ͭͯ࿩͠·ͨ͠
    w ࣮ࡍͷ%*ͷద༻ྫʹ͍ͭͯ࿩͠·ͨ͠

97. 3FBMN͸
    Ͳ͔͜Β΍ͬͯ͘Δͷ͔

98. 3FBMN͸
    %*ʹΑͬͯ
    ֎͔Β΍͖ͬͯ·͢

99. ͝੩ௌ͋Γ͕ͱ͏
    ͍͟͝·ͨ͠