我々のRealmはどこからやってくるのか

DIについての自由研究内容を発表しました。

Transcript

1. զʑ ओޠ͕େ͖͍ ͷ 3FBMN͸Ͳ͔͜Β΍ͬ ͯ͘Δͷ͔ 3FBMN
   8PSME
   5PVS
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   JE4JYFJHIU
2. ࣗݾ঺հ w JE4JYFJHIU
   !UPNPIJ@SP
   
   ੢ଜ
   ༑༟
   w גࣜձࣾ͸ͯͳ
   ΞϓϦέʔγϣϯΤϯδχΞ
   w ೥݄
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   w ฏ೔͸ຖ೔ʮ೔هʯΛॻ͍͍ͯ·͢
   w IUUQTJYFJHIUIBUFOBCMPHDPN
3. ͸ͯͳͰԿΛ΍͖͔ͬͯͨ
   αʔϏεએ఻ίʔφʔ w .BDLFSFM
   w IUUQTNBDLFSFMJP
   w ΧΫϤϜ
   "1*ɺΞϓϦ
   w IUUQTLBLVZPNVKQ
   w ͸ͯͳϒϩά
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   w IUUQIBUFOBCMPHDPNHVJEFBQQ
   w ͸ͯͳϒοΫϚʔΫ
   ΞϓϦ
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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();
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
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21. 4FSWJDF
    -PDBUPS w ͋Δίϯϙʔωϯτ͸ඞཁͳίϯϙʔωϯτ Λ୳ͯ͘͠ΕΔԿ͔͚ͩ஌͍ͬͯΕ͹Α͍ͱ ͍͏͜ͱʹ͢Δ " # $ 4-
22. ඞཁͳίϯϙʔωϯτΛ
    ୳ͯ͠ ࡞ͬͯ ͘ΕΔ
    Կ͔Λ༻ҙ͢Δ
23. 4FSWJDF
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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
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    Λ࢖ ͍ͨ͘ͳͬͨΒʁ
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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
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*$MJFOU͕ཉ͍ͩ͠ ͚ͩͬͨ
    w 4FSWJDF
    -PDBUPSͷΠϯλʔϑΣʔεʹै ͏ͨΊʹͳΜͰ͜ΜͳʹେྔʹίʔυΛॻ͔ ͳ͍ͱ͍͚ͳ͍ͷ͔
39. զʑ͕ཉ͔ͬͨ͠΋ͷ protocol UserRepositoryDependency { var realmConfiguration: Realm.Configuration { get } var realm: Realm { get } var apiClient: APIClient { get } } 4XJGU
40. ͦ΋ͦ΋3FQPTJUPSZ͕͜ͷ ΠϯλʔϑΣʔεΛड͚औΕ ͹ྑ͔ͬͨͷͰ͸ͳ͍͔
41. ͜͏͍͏ײ͡ class UserRepository { private let realm: Realm private let apiClient: APIClient init(dependency: UserRepositoryDependency) { realm = dependency.realm apiClient = dependency.apiClient } } 4XJGU
42. Α͘ͳͬͨ.PDL-PDBUPS class MockLocator: UserRepositoryDependency { var realmConfiguration: Realm.Configuration { return .Configuration(inMemoryIdentifier: "test") } var realm: Realm { return try! Realm(configuration: realmConfiguration) } var apiClient: APIClientProtocol { return new MockApiClient(); } } 4XJGU
43. 4FSWJDF
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    l΋z
    ࣮૷͢Δ class Locator: LocatorProtocol, UserRepositoryDependency { var realmConfiguration: Realm.Configuration { … } var realm: Realm { … } var apiClient: APIClient { … } var tracker: Tracker { … } var userRepository: UserRepository { … } var friendRepository: FriendRepository { … } var itemRepository: ItemRepository { … } } 4XJGU
44. ࠷ॳͷґଘؔ܎ 6TFS3FQPTJUPSZ -PDBUPS
45. ΠϯλʔϑΣʔεΛಋೖͨ͋͠ ͱͷґଘؔ܎ 6TFS3FQPTJUPSZ *-PDBUPS -PDBUPS
46. ৽͍͠ґଘؔ܎ 6TFS3FQPTJUPSZ -PDBUPS 6TFS3FTQPTJUPSZ% FQFOEFODZ
47. ґଘؔ܎͕ٯసͨ͠
48. %FQFOEFODZ
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49. ґଘੑٯసͷݪଇ %*1
50. ґଘੑٯసͷݪଇ
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    w ʮந৅ʯ͸࣮૷ͷৄࡉʹґଘͯ͠͸ͳΒͳ͍ɻ ࣮૷ͷৄࡉ͕ʮந৅ʯʹґଘ͢΂͖Ͱ͋Δɻ
51. ࠷ॳͷґଘؔ܎ 6TFS3FQPTJUPSZ -PDBUPS
52. %*1 Ұ෦ Λద༻ͨ͠ґଘؔ܎ 6TFS3FQPTJUPSZ *-PDBUPS -PDBUPS
53. %*1Λద༻ͨ͋͠ͱͷґଘؔ܎ 6TFS3FQPTJUPSZ -PDBUPS 6TFS3FTQPTJUPSZ% FQFOEFODZ
54. ґଘੑٯసͷݪଇ %*1
55. ͱ͜ΖͰίϯετϥΫλΛ࢖ ͑ͳ͍৔߹͸Ͳ͏͢Ε͹
56. ΞϓϦ։ൃͰίϯετϥΫλ͕ ࢖͍ʹ͍͘ͱ͜Ζ w J04
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57. ߟ͑ΒΕΔํ๏ w ϓϩύςΟʹ୅ೖ͢Δ
    w ηολʔΛ༻ҙ͢Δ
    w ॳظԽϝιουΛ༻ҙ͢Δ
58. 7JFX$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
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60. ΋͏Ұ౓࠷ॳͷ໰͍ʹ໭Δ
61. 3FBMNΠϯελϯε͸
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62. 3FBMNΠϯελϯε͸
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63. 7JFX$POUSPMMFS͸
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64. ͜ͷґଘΛͲ͏΍ͬͯղܾ͢ Ε͹͍͍ͷ͔
65. %FQFOEFODZ
    *OKFDUJPO
    1BUUFSO
66. https://www.martinfowler.com/articles/injection.html
67. http://kakutani.com/trans/fowler/injection.html
68. ґଘΦϒδΣΫτ஫ೖ
    ґଘੑ஫ೖ
69. 7JFX$POUSPMMFS͸
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70. "
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71. #
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72. ґଘΦϒδΣΫτ
    
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73. %FQFOEFODZ
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74. ஫ೖʁ
75. ґଘΦϒδΣΫτΛ
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76. Ώ͔͍ͳ஥ؒͨͪ w $POTUSVDUPS
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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
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82. l%FQFOEFODZ
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    DPODFQUz http://www.jamesshore.com/Blog/Dependency- Injection-Demystified.html - James Shore
83. %FQFOEFODZ
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84. 1SPQFSUZ
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85. ࠓճͷ࡞ઓ w 1SPUPDPM
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86. 1SPUPDPM
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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
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    w ґଘΛऔಘ͢ΔϓϩύςΟ͕ಥવੜ͑ΔͷͰ ίʔυ͕௥͍ʹ͘͘ͳΔ
90. https://speakerdeck.com/yashigani/dependency- injection-in-ios-apps
91. %BHHFS̉
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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 ָ
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95. 
    ;Γ͔͑Γ
96. ;Γ͔͑Γ w 4FSWJDF
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    w *P$%*1ʹ͍ͭͯগ͠৮Ε·ͨ͠
    w %*ʹ͍ͭͯ࿩͠·ͨ͠
    w ࣮ࡍͷ%*ͷద༻ྫʹ͍ͭͯ࿩͠·ͨ͠
97. 3FBMN͸
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98. 3FBMN͸
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99. ͝੩ௌ͋Γ͕ͱ͏
    ͍͟͝·ͨ͠