// Some Factory in Angular 1
var somethings = [];
var service = {
    all: all
};
return service;

function all() {
    return $http
        .get('api/somethings')
        .then(function(response) {
            somethings = parseSomethings(response.data);
            return somethings;
        });
}

// Some Controller in Angular 1
var vm = this;
vm.somethings = [];
vm.loading = true;

loadThings();

function loadThings() {
    SomeFactory
        .all()
        .then(function(somethings) {
            vm.somethings = somethings;
        })
        .finally(function() {
            vm.loading = false;
        })
}

// Some Service in Angular 2
export class SomeService {
    private _somethings$: Subject<Something[]>;
    private dataStore: {
        somethings: Something[]
    };

    constructor(private http: Http) {}

    get _somethings$() : Observable<Something[]> {
        return this._somethings$.asObservable();
    }

    loadAll() {
        this.http
            .get(`api/somethings`)
            .map(response => response.json())
            .subscribe(
                response => {
                    this.dataStore.somethings = parseSomethings(response.data);
                    this._somethings$.next(this.dataStore.somethings);
                }
            );
    }
}

//Some Component in Angular 2
export class SomeComponent() {

    constructor(private someService: SomeService) {}

    ngOnInit() {
        this.someService.loadAll();
        this.somethings = this.someService.somethings$;
    }
}

create(something: Something) : Observable<Something>{
    return this.http.post(`api/somethings`, JSON.stringify(something))
        .map(response => response.json())
        .do(
            something => {
                this.dataStore.somethings.push(something);
                this._somethings$.next(this.dataStore.somethings); //Notify the subscribers
            }
        );
}