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uber/motif
@shaunkawano
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•DI library - simple API optimized for
nested scopes
•Generates Dagger code for actual
DI
•Under heavily development
uber/motif
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No content
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Usage
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@motif.Scope
interface AppScope {
@motif.Objects
abstract class Objects {
fun okHttpClient(): OkHttpClient =
OkHttpClient.Builder().build()
fun retrofit(okHttpClient: OkHttpClient): Retrofit =
Retrofit.Builder().client(okHttpClient).baseUrl("")
.addCallAdapterFactory(RxJava2CallAdapterFactory.createAsync())
.build()
fun service(retrofit: Retrofit): Service =
retrofit.create(Service::class.java)
fun api(service: Service): Api = ApiClient(service)
}
}
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@motif.Scope
interface AppScope {
@motif.Objects
abstract class Objects {
fun okHttpClient(): OkHttpClient =
OkHttpClient.Builder().build()
fun retrofit(okHttpClient: OkHttpClient): Retrofit =
Retrofit.Builder().client(okHttpClient).baseUrl("")
.addCallAdapterFactory(RxJava2CallAdapterFactory.createAsync())
.build()
fun service(retrofit: Retrofit): Service =
retrofit.create(Service::class.java)
fun api(service: Service): Api = ApiClient(service)
}
}
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@motif.Scope
interface AppScope {
@motif.Objects
abstract class Objects {
fun okHttpClient(): OkHttpClient =
OkHttpClient.Builder().build()
fun retrofit(okHttpClient: OkHttpClient): Retrofit =
Retrofit.Builder().client(okHttpClient).baseUrl("")
.addCallAdapterFactory(RxJava2CallAdapterFactory.createAsync())
.build()
fun service(retrofit: Retrofit): Service =
retrofit.create(Service::class.java)
fun api(service: Service): Api = ApiClient(service)
}
}
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@motif.Scope
interface AppScope {
@motif.Objects
abstract class Objects {
fun okHttpClient(): OkHttpClient =
OkHttpClient.Builder().build()
fun retrofit(okHttpClient: OkHttpClient): Retrofit =
Retrofit.Builder().client(okHttpClient).baseUrl("")
.addCallAdapterFactory(RxJava2CallAdapterFactory.createAsync())
.build()
fun service(retrofit: Retrofit): Service =
retrofit.create(Service::class.java)
fun api(service: Service): Api = ApiClient(service)
}
}
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public class AppScopeImpl implements AppScope {
private final Component component;
public AppScopeImpl(Dependencies dependencies) {
this.component = DaggerAppScopeImpl_Component.builder()
.dependencies(dependencies)
.module(new Module())
.build();
}
public AppScopeImpl() {
this(new Dependencies() {});
}
public interface Dependencies {
}
@DaggerScope
@dagger.Component(
dependencies = Dependencies.class,
modules = Module.class
)
interface Component {
}
private static class Objects extends AppScope.Objects {
}
…
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@dagger.Module
class Module {
private final AppScope.Objects objects = new Objects();
@Provides
AppScope appScope() {
return AppScopeImpl.this;
}
@Provides
@DaggerScope
OkHttpClient okHttpClient() {
return objects.okHttpClient();
}
@Provides
@DaggerScope
Retrofit retrofit(OkHttpClient okHttpClient) {
return objects.retrofit(okHttpClient);
}
@Provides
@DaggerScope
Service service(Retrofit retrofit) {
return objects.service(retrofit);
}
…
}
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public final class AppScopeImpl_Module_ApiFactory implements Factory {
private final AppScopeImpl.Module module;
private final Provider serviceProvider;
public AppScopeImpl_Module_ApiFactory(
AppScopeImpl.Module module, Provider serviceProvider) {
this.module = module;
this.serviceProvider = serviceProvider;
}
@Override
public Api get() {
return provideInstance(module, serviceProvider);
}
public static Api provideInstance(AppScopeImpl.Module module, Provider
serviceProvider) {
return proxyApi(module, serviceProvider.get());
}
…
public static Api proxyApi(AppScopeImpl.Module instance, Service service) {
return Preconditions.checkNotNull(
instance.api(service), "Cannot return null from a non-@Nullable @Provides
method");
}
}
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It generates code similar to
or the same as what dagger
generates
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dagger & motif?
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# of concepts
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@RootComponent.Scope
@Component(modules = RootComponent.Module.class)
public interface RootComponent {
RootController controller();
LoggedInComponent.Builder loggedIn();
@dagger.Component.Builder
interface Builder {
@BindsInstance
Builder viewGroup(@Root ViewGroup parent);
RootComponent build();
}
@dagger.Module
abstract class Module {
@Scope
@Provides
static RootView view(@Root ViewGroup parent) {
return RootView.create(parent);
}
}
@javax.inject.Scope
@interface Scope {}
@Qualifier
@interface Root {}
}
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@RootComponent.Scope
@Component(modules = RootComponent.Module.class)
public interface RootComponent {
RootController controller();
LoggedInComponent.Builder loggedIn();
@dagger.Component.Builder
interface Builder {
@BindsInstance
Builder viewGroup(@Root ViewGroup parent);
RootComponent build();
}
@dagger.Module
abstract class Module {
@Scope
@Provides
static RootView view(@Root ViewGroup parent) {
return RootView.create(parent);
}
}
@javax.inject.Scope
@interface Scope {}
@Qualifier
@interface Root {}
}
•@Scope
•@Component / @Subcomponent
•@Component.Buidler / @Subcomponent.Builder
•@Qualifier
•@BindsInstance
•@Module
•@Provides
•abstract @Modules
•static @Provides
•Component provision method
•Component factory method
•Constructor injection
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@Scope
public interface RootScope {
RootController controller();
LoggedInScope loggedIn(ViewGroup parentViewGroup);
@motif.Objects
abstract class Objects {
abstract RootController controller();
RootView view(ViewGroup viewGroup) {
return RootView.create(viewGroup);
}
}
}
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@Scope
public interface RootScope {
RootController controller();
LoggedInScope loggedIn(ViewGroup parentViewGroup);
@motif.Objects
abstract class Objects {
abstract RootController controller();
RootView view(ViewGroup viewGroup) {
return RootView.create(viewGroup);
}
}
}
•@motif.Scope
•@motif.Objects
•Access method
•Child method
•Factory method (Basic)
•Factory method (Constructor Injected)
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•dagger
•Fully customizable
•Required to understand its concepts
•Code readability concern
•motif
•Less customizable
•Less concepts
•More readable
Philosophy
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@Expose
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@motif.Scope
interface ChildScope {
@motif.Objects
open class Objects {
fun childService(retrofit: Retrofit): ChildService =
retrofit.create(ChildService::class.java)
fun childApi(childService: ChildService): ChildApi =
ChildApiClient(childService)
}
}
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@motif.Scope
interface ChildScope {
@motif.Objects
open class Objects {
fun childService(retrofit: Retrofit): ChildService =
retrofit.create(ChildService::class.java)
fun childApi(childService: ChildService): ChildApi =
ChildApiClient(childService)
}
}
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@motif.Scope
interface AppScope {
fun childScope(): ChildScope
@motif.Objects
open class Objects {
fun okHttpClient(): OkHttpClient =
OkHttpClient.Builder().build()
fun retrofit(okHttpClient: OkHttpClient): Retrofit =
Retrofit.Builder().client(okHttpClient).baseUrl(“")
.addCallAdapterFactory(RxJava2CallAdapterFactory
.createAsync()).build()
fun service(retrofit: Retrofit): Service =
retrofit.create(Service::class.java)
fun api(service: Service): Api = ApiClient(service)
}
}
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@motif.Scope
interface AppScope {
fun childScope(): ChildScope
@motif.Objects
open class Objects {
fun okHttpClient(): OkHttpClient =
OkHttpClient.Builder().build()
fun retrofit(okHttpClient: OkHttpClient): Retrofit =
Retrofit.Builder().client(okHttpClient).baseUrl(“")
.addCallAdapterFactory(RxJava2CallAdapterFactory
.createAsync()).build()
fun service(retrofit: Retrofit): Service =
retrofit.create(Service::class.java)
fun api(service: Service): Api = ApiClient(service)
}
}
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@Expose
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@motif.Scope
interface AppScope {
fun childScope(): ChildScope
@motif.Objects
open class Objects {
fun okHttpClient(): OkHttpClient =
OkHttpClient.Builder().build()
fun retrofit(okHttpClient: OkHttpClient): Retrofit =
Retrofit.Builder().client(okHttpClient).baseUrl(“")
.addCallAdapterFactory(RxJava2CallAdapterFactory
.createAsync())
.build()
fun service(retrofit: Retrofit): Service =
retrofit.create(Service::class.java)
fun api(service: Service): Api = ApiClient(service)
}
}
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@motif.Scope
interface AppScope {
fun childScope(): ChildScope
@motif.Objects
open class Objects {
fun okHttpClient(): OkHttpClient =
OkHttpClient.Builder().build()
@Expose
fun retrofit(okHttpClient: OkHttpClient): Retrofit =
Retrofit.Builder().client(okHttpClient).baseUrl("")
.addCallAdapterFactory(RxJava2CallAdapterFactory
.createAsync())
.build()
fun service(retrofit: Retrofit): Service =
retrofit.create(Service::class.java)
fun api(service: Service): Api = ApiClient(service)
}
}
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Summary
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•DI library
•Clearly different from Dagger
•Under heavily development
•Read and understand its philosophy
before choosing to use it or not
uber/motif
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Uber/Motif
@shaunkawano
Thank you!