Toothpick - A fresh approach to DI

Transcript

1. A FRESH APPROACH TO DI TOOTHPICK https://github.com/stephanenicolas/toothpick/

2. ABOUT US Senior Android Dev @ Groupon
 ~20 years of

   Java coding OSS: Dart, TP, BoundBox, … STEPHANE NICOLAS DANIEL MOLINERO REGUERA Android Dev @ Groupon
 Turbulence Ninja OSS: Dart, TP. +stephane @D_Lemures

3. 5IF
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 jobs.groupon.com/careers/

4. THE TALK WHY DI ? WHY TOOTHPICK? TOOTHPICK FEATURES 


   ADVANCED FEATURES 
 
 CONCLUSION SCOPE MODULES & BINDINGS SCOPE TREE SCOPE SINGLETONS MVP & STATE PRESERVATION MULTIPLE ACTIVITIES FLOWS

5. WHY DI ?

6. WHY DI ? DECOUPLE

7. WHY DI ? DECOUPLE USES

8. WHY DI ? DECOUPLE REUSE USES

9. WHY DI ? DECOUPLE REUSE USES USES USES

10. WHY DI ? DECOUPLE REUSE TEST USES USES USES

11. WHY DI ? DECOUPLE REUSE TEST USES USES USES MOCK

    USES

12. WHY TOOTHPICK?

13. WHY TOOTHPICK? SIMPLER

14. WHY TOOTHPICK? SIMPLER BETTER TEST SUPPORT

15. WHY TOOTHPICK? SIMPLER BETTER TEST SUPPORT EVEN FASTER

16. TOOTHPICK FEATURES public class SmoothieMachine {
 
 @Inject IceMachine iceMachine;


    
 public void doSmoothie() {
 iceMachine.makeIce();
 }
 } @Singleton
 public class IceMachine {
 Foo foo;
 
 @Inject
 public IceMachine(Foo foo) {
 this.foo = foo;
 }


17. TOOTHPICK FEATURES public class SmoothieMachine {
 
 @Inject IceMachine iceMachine;


    
 public void doSmoothie() {
 iceMachine.makeIce();
 }
 } @Singleton
 public class IceMachine {
 Foo foo;
 
 @Inject
 public IceMachine(Foo foo) {
 this.foo = foo;
 }
 JSR 330 annotations→nothing new here

18. TOOTHPICK FEATURES SCOPE SCOPE

19. TOOTHPICK FEATURES SCOPE SCOPE MAKE INJECTIONS

20. TOOTHPICK FEATURES SCOPE SCOPE MAKE INJECTIONS public class MyApplication extends

    Application { @Inject Machine machine;
 
 @Override protected void onCreate() {
 super.onCreate();
 
 Scope appScope = Toothpick.openScope(this); appScope.installModules(…); Toothpick.inject(this, appScope);
 } }

21. TOOTHPICK FEATURES SCOPE, MODULES & BINDINGS SCOPE

22. TOOTHPICK FEATURES SCOPE, MODULES & BINDINGS SCOPE BINDINGS

23. TOOTHPICK FEATURES SCOPE, MODULES & BINDINGS SCOPE BINDINGS MODULES

24. TOOTHPICK FEATURES SCOPE, MODULES & BINDINGS SCOPE BINDINGS MODULES public

    class MyApplication extends Application { @Inject Machine machine;
 
 @Override protected void onCreate() {
 super.onCreate();
 
 Scope appScope = Toothpick.openScope(this); appScope.installModules(new Module() {{
 bind(Machine.class).to(IceMachine.class); }});
 Toothpick.inject(this, appScope);
 } }

25. TOOTHPICK FEATURES APPLICATION
 SCOPE ACTIVITY 1
 SCOPE SCOPE TREE

26. TOOTHPICK FEATURES APPLICATION
 SCOPE SCOPE TREE

27. TOOTHPICK FEATURES APPLICATION
 SCOPE ACTIVITY 2
 SCOPE SCOPE TREE

28. TOOTHPICK FEATURES APPLICATION
 SCOPE ACTIVITY 2
 SCOPE SERVICE 1
 SCOPE

    SCOPE TREE

29. TOOTHPICK FEATURES APPLICATION
 SCOPE ACTIVITY 2
 SCOPE SERVICE 1
 SCOPE

    FRAGMENT 1
 SCOPE SCOPE TREE

30. TOOTHPICK FEATURES APPLICATION
 SCOPE ACTIVITY 2
 SCOPE SERVICE 1
 SCOPE

    FRAGMENT 1
 SCOPE FRAGMENT 2
 SCOPE SCOPE TREE

31. TOOTHPICK FEATURES APPLICATION
 SCOPE ACTIVITY 2
 SCOPE SERVICE 1
 SCOPE

    FRAGMENT 3
 SCOPE FRAGMENT 1
 SCOPE FRAGMENT 2
 SCOPE SCOPE TREE

32. TOOTHPICK FEATURES public class LemonActivity extends Activity {
 
 @Inject

    Machine machine; @Inject Context context;
 
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 Scope scope = Toothpick.openScopes(getApplication(), this);
 scope.installModules(…);
 Toothpick.inject(this, scope);
 } } SCOPE TREE

33. TOOTHPICK FEATURES public class LemonActivity extends Activity {
 
 @Inject

    Machine machine; @Inject Context context;
 
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 Scope scope = Toothpick.openScopes(getApplication(), this);
 scope.installModules(…);
 Toothpick.inject(this, scope);
 } } SCOPE TREE APPLICATION
 SCOPE ACTIVITY
 SCOPE

34. TOOTHPICK FEATURES APPLICATION
 SCOPE ACTIVITY
 SCOPE SCOPE SINGLETONS

35. TOOTHPICK FEATURES APPLICATION
 SCOPE ACTIVITY
 SCOPE APP SINGLETONS SCOPE SINGLETONS

36. TOOTHPICK FEATURES APPLICATION
 SCOPE ACTIVITY
 SCOPE APP SINGLETONS ACTIVITY SINGLETONS

    SCOPE SINGLETONS

37. TOOTHPICK FEATURES public class Module extends Module {
 public Module()

    {
 bind(Machine.class).toInstance(new Ice Machine());
 }
 } SCOPE SINGLETONS SINGLETONS CAN BE DEFINED IN MODULES

38. TOOTHPICK FEATURES @Singleton
 public class IceMachine {
 } @ActivitySingleton
 public

    class SmoothieMachine {
 } APPLICATION
 SCOPE ACTIVITY
 SCOPE SCOPE SINGLETONS OR USING ANNOTATIONS

39. ADVANCED TOOTHPICK FEATURES MVP & STATE PRESERVATION

40. ADVANCED TOOTHPICK FEATURES MVP & STATE PRESERVATION

41. ADVANCED TOOTHPICK FEATURES MVP & STATE PRESERVATION

42. APPLICATION SCOPE ADVANCED TOOTHPICK FEATURES MVP & STATE PRESERVATION ACTIVITY

    SCOPE

43. APPLICATION SCOPE ADVANCED TOOTHPICK FEATURES MVP & STATE PRESERVATION ACTIVITY

    SCOPE

44. APPLICATION SCOPE PRESENTER SCOPE ADVANCED TOOTHPICK FEATURES MVP & STATE

    PRESERVATION ACTIVITY SCOPE

45. PRESENTER INSTANCE APPLICATION SCOPE PRESENTER SCOPE ADVANCED TOOTHPICK FEATURES MVP

    & STATE PRESERVATION ACTIVITY SCOPE

46. PRESENTER INSTANCE APPLICATION SCOPE PRESENTER SCOPE ADVANCED TOOTHPICK FEATURES MVP

    & STATE PRESERVATION

47. PRESENTER INSTANCE APPLICATION SCOPE PRESENTER SCOPE ADVANCED TOOTHPICK FEATURES MVP

    & STATE PRESERVATION ACTIVITY SCOPE

48. ADVANCED TOOTHPICK FEATURES MVP & STATE PRESERVATION public class MyActivity

    extends Activity {
 
 @Inject MyPresenter presenter; 
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 Scope scope = openScopes(getApplication(), 
 PresenterSingleton.class, 
 this);
 Toothpick.inject(this, scope);
 } }

49. @PresenterSingleton
 public class MyPresenter {
 String dealId;
 int quantity;
 }

    PRESENTER SCOPE MVP & STATE PRESERVATION ADVANCED TOOTHPICK FEATURES

50. ACTIVITY 1 ADVANCED TOOTHPICK FEATURES ACTIVITY 3 ACTIVITY 2 MULTI

    ACTIVITY FLOWS

51. ACTIVITY 1 ADVANCED TOOTHPICK FEATURES ACTIVITY 3 ACTIVITY 2 MULTI

    ACTIVITY FLOWS Purchase Flow

52. ACTIVITY 1 ADVANCED TOOTHPICK FEATURES ACTIVITY 3 ACTIVITY 2 MULTI

    ACTIVITY FLOWS Purchase Flow

53. ACTIVITY 1 ADVANCED TOOTHPICK FEATURES ACTIVITY 3 ACTIVITY 2 MULTI

    ACTIVITY FLOWS

54. ACTIVITY 1 ADVANCED TOOTHPICK FEATURES ACTIVITY 3 ACTIVITY 2 MULTI

    ACTIVITY FLOWS

55. ACTIVITY 1 ADVANCED TOOTHPICK FEATURES ACTIVITY 3 ACTIVITY 2 MULTI

    ACTIVITY FLOWS

56. ACTIVITY 1 ADVANCED TOOTHPICK FEATURES ACTIVITY 3 ACTIVITY 2 MULTI

    ACTIVITY FLOWS

57. APPLICATION SCOPE ACTIVITY 1 SCOPE ADVANCED TOOTHPICK FEATURES FLOW SCOPE

    MULTI ACTIVITY FLOWS

58. APPLICATION SCOPE ACTIVITY 1 SCOPE ADVANCED TOOTHPICK FEATURES FLOW SCOPE

    MULTI ACTIVITY FLOWS

59. APPLICATION SCOPE ACTIVITY 1 SCOPE ADVANCED TOOTHPICK FEATURES FLOW SCOPE

    ACTIVITY 2 SCOPE MULTI ACTIVITY FLOWS

60. APPLICATION SCOPE ACTIVITY 1 SCOPE ADVANCED TOOTHPICK FEATURES FLOW SCOPE

    ACTIVITY 3 SCOPE ACTIVITY 2 SCOPE MULTI ACTIVITY FLOWS

61. APPLICATION SCOPE ADVANCED TOOTHPICK FEATURES FLOW SCOPE MULTI ACTIVITY FLOWS

62. APPLICATION SCOPE ADVANCED TOOTHPICK FEATURES MULTI ACTIVITY FLOWS

63. ADVANCED TOOTHPICK FEATURES MVP & STATE PRESERVATION public class MyActivity

    extends Activity {
 
 @Inject ShoppingCart shoppingCart; 
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 Scope scope = openScopes(getApplication(), 
 FlowSingleton.class, 
 this);
 Toothpick.inject(this, scope);
 } }

64. @FlowSingleton
 public class ShoppingCart {
 List<PurchaseItem> purchases…
 } FLOW SCOPE

    MULTI ACTIVITY FLOWS ADVANCED TOOTHPICK FEATURES

65. CONCLUSION QUESTIONS ? COMMENTS ?

66. CONCLUSION QUESTIONS ? COMMENTS ?

67. A FRESH APPROACH TO DI TOOTHPICK https://github.com/stephanenicolas/toothpick/ +stephane @D_Lemures