RepositoryModule.java

@Module
public class RepositoryModule {
    @Provides
    @Singleton
    ConnectionSource providesConnectionSource(Application app) {
        return new AndroidConnectionSource(new DatabaseHelper(app.getApplicationContext()));
    }

    @Provides
    @Singleton
    UserRepository providesUserRepository(ConnectionSource connectionSource) {
        return new UserSQLImpl(connectionSource);
    }
}