Dagger 2 - static instance of the factory



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Why does dagger use a static instance of the factory providing the dependency? In this case INSTANCE has a static lifetime and is not even needed when the dependency is not associated with any scope (proxyProvidesSomeDependency is used in this case). Even when used with a scope, why should the factory of a dependency outlive a dependency or the component providing that dependency? Am i missing something?



public final class FragmentModule_ProvidesSomeDependencyFactory
implements Factory<SomeDependency>
private static final FragmentModule_ProvidesSomeDependencyFactory INSTANCE =
new FragmentModule_ProvidesSomeDependencyFactory();

@Override
public SomeDependency get()
return provideInstance();


public static SomeDependency provideInstance()
return proxyProvidesSomeDependency();


public static FragmentModule_ProvidesSomeDependencyFactory create()
return INSTANCE;


public static SomeDependency proxyProvidesSomeDependency()
return Preconditions.checkNotNull(
FragmentModule.providesSomeDependency(),
"Cannot return null from a non-@Nullable @Provides method");











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    0















    Why does dagger use a static instance of the factory providing the dependency? In this case INSTANCE has a static lifetime and is not even needed when the dependency is not associated with any scope (proxyProvidesSomeDependency is used in this case). Even when used with a scope, why should the factory of a dependency outlive a dependency or the component providing that dependency? Am i missing something?



    public final class FragmentModule_ProvidesSomeDependencyFactory
    implements Factory<SomeDependency>
    private static final FragmentModule_ProvidesSomeDependencyFactory INSTANCE =
    new FragmentModule_ProvidesSomeDependencyFactory();

    @Override
    public SomeDependency get()
    return provideInstance();


    public static SomeDependency provideInstance()
    return proxyProvidesSomeDependency();


    public static FragmentModule_ProvidesSomeDependencyFactory create()
    return INSTANCE;


    public static SomeDependency proxyProvidesSomeDependency()
    return Preconditions.checkNotNull(
    FragmentModule.providesSomeDependency(),
    "Cannot return null from a non-@Nullable @Provides method");











    share|improve this question
























      0












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      0








      Why does dagger use a static instance of the factory providing the dependency? In this case INSTANCE has a static lifetime and is not even needed when the dependency is not associated with any scope (proxyProvidesSomeDependency is used in this case). Even when used with a scope, why should the factory of a dependency outlive a dependency or the component providing that dependency? Am i missing something?



      public final class FragmentModule_ProvidesSomeDependencyFactory
      implements Factory<SomeDependency>
      private static final FragmentModule_ProvidesSomeDependencyFactory INSTANCE =
      new FragmentModule_ProvidesSomeDependencyFactory();

      @Override
      public SomeDependency get()
      return provideInstance();


      public static SomeDependency provideInstance()
      return proxyProvidesSomeDependency();


      public static FragmentModule_ProvidesSomeDependencyFactory create()
      return INSTANCE;


      public static SomeDependency proxyProvidesSomeDependency()
      return Preconditions.checkNotNull(
      FragmentModule.providesSomeDependency(),
      "Cannot return null from a non-@Nullable @Provides method");











      share|improve this question














      Why does dagger use a static instance of the factory providing the dependency? In this case INSTANCE has a static lifetime and is not even needed when the dependency is not associated with any scope (proxyProvidesSomeDependency is used in this case). Even when used with a scope, why should the factory of a dependency outlive a dependency or the component providing that dependency? Am i missing something?



      public final class FragmentModule_ProvidesSomeDependencyFactory
      implements Factory<SomeDependency>
      private static final FragmentModule_ProvidesSomeDependencyFactory INSTANCE =
      new FragmentModule_ProvidesSomeDependencyFactory();

      @Override
      public SomeDependency get()
      return provideInstance();


      public static SomeDependency provideInstance()
      return proxyProvidesSomeDependency();


      public static FragmentModule_ProvidesSomeDependencyFactory create()
      return INSTANCE;


      public static SomeDependency proxyProvidesSomeDependency()
      return Preconditions.checkNotNull(
      FragmentModule.providesSomeDependency(),
      "Cannot return null from a non-@Nullable @Provides method");








      dagger-2 dagger.android dagger-android






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      asked Nov 16 '18 at 13:44









      VairavanVairavan

      191129




      191129






















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