@Injectable()export class LoadUserThreadsEffectService {  constructor(private action$: Actions, private threadsService: ThreadsService) {  }  @Effect()  userThreadsEffect$: Observable
     
       = this.action$    .ofType(LOAD_USER_THREADS_ACTION)    .switchMap((action) => this.threadsService.loadUserThreads(action.payload))    .map((allUserData) => new LoadUserThreadsSuccess(allUserData));  @Effect()  userSelectedEffect$: Observable
      
        = this.action$    .ofType(USER_SELECTED_ACTION)    .map((action) => new LoadUserThreadsAction(action.payload))}
      
     

 

For the first Effect, 

LOAD_USER_THREADS_ACTION

will trigger another action:

.map((allUserData) => new LoadUserThreadsSuccess(allUserData));

 

Second effect:

.ofType(USER_SELECTED_ACTION)

will trigger another action:

.map((action) => new LoadUserThreadsAction(action.payload))