Asynchronous Injection

Transcript

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2. ࣗݾ঺հ
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5. %BHHFS
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6. ؆୯ͳྫ
   w .PEVMFº
   w $PNQPOFOU
   w "DUJWJUZ
   

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7. .PEVMF
   @ProducerModule

   final class AppProducerModule {

   @Produces

   ListenableFuture getUserData() {

   // ~ ͳΜ͔ΊͬͪΌ͕͔͔࣌ؒΔॲཧ ~

   return Futures.immediateFuture(new UserData("userName"));

   }

   

   @Produces

   String userName(UserData userData) {
   return userData.name; // Activity ͸͜Ε͕΄͍͠

   }
   

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8. .PEVMF
   @ProducerModule

   final class AppProducerModule {

   @Produces

   ListenableFuture getUserData() { // 1

   // ~ ͳΜ͔ΊͬͪΌ͕͔͔࣌ؒΔॲཧ ~

   return Futures.immediateFuture(new UserData("userName"));

   }

   

   @Produces

   String userName(UserData userData) { // 2
   return userData.name; // Activity ͸͜Ε͕΄͍͠

   }
   

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9. .PEVMF
   @Module

   public class ExecutorModule {

   @Provides

   @Production

   static Executor executor() {

   return Executors.newCachedThreadPool();

   }

   }
   

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10. $PNQPOFOU
    @ProductionComponent(modules = {
    ExecutorModule.class,
    AppProducerModule.class})

    public interface AppProducerComponent {

    ListenableFuture userName();

    }
    

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11. "DUJWJUZ
    …
    ListenableFuture userDataListenableFuture =
    DaggerAppProducerComponent.create().userName();

    Futures.addCallback(
    userDataListenableFuture,
    new FutureCallback() {

    @Override

    public void onSuccess(String result) {

    Log.e("name", result);

    }

    

    @Override

    public void onFailure(Throwable t) {

    Log.e("failure", t.toString());

    }

    });
    …
    

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12. 1SPEVDFS5
    

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13. .PEVMF
    @ProducerModule

    public class AppProducerLazyModule {

    @Produces @Normal

    ListenableFuture provideNUserData() {

    return Futures.immediateFuture(new UserData("normal"));

    }

    

    @Produces @Special

    ListenableFuture provideSUserData() {

    return Futures.immediateFuture(new UserData("special"));

    }
    

    @Produces

    ListenableFuture provideUserData(
    @Normal Producer nProducer,
    @Special Producer sProducer) {

    return sProducer.get();

    }

    }
    

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14. @ProducerModule
    public class MyModule {
    @Produces ListenableFuture a() { … }
    @Produces ListenableFuture b(A a) { … }
    @Produces ListenableFuture c(B b) { … }
    @Produces @Delayed ListenableFuture delayedC(A a,
    Producer c) { … return c.get(); }
    }
    

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15. @ProducerModule
    public class MyModule {
    @Produces ListenableFuture a() { … } // 1
    @Produces ListenableFuture b(A a) { … } // 3
    @Produces ListenableFuture c(B b) { … } // 4
    @Produces @Delayed ListenableFuture delayedC(A a,
    Producer c) { … return c.get(); } // 2
    }
    

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16. 1SPEVDFE5
    

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17. .PEVMF
    @ProducerModule

    final class AppProducerModule {

    @Produces

    ListenableFuture getUserData() {

    // ~ ͳΜ͔ΊͬͪΌ͕͔͔࣌ؒΔॲཧ ~

    throw new IllegalStateException(); // Θ͟ͱམͱ͢

    }

    

    @Produces

    String userName(Produced userData) {

    try {

    return userData.get().name;

    } catch (ExecutionException e) {

    e.printStackTrace();

    return "Կ͔͕ى͖ͨ";

    }

    }

    }
    

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18. ৄࡉ
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19. ͋Γ͕ͱ͏͍͟͝·ͨ͠
    

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