import { HttpClient } from '@angular/common/http';
import { Store } from '@ngrx/store';
import { Attribute, ChartAggregatedWidgetOptions, Item, YapI18nService, YapSnackbarService } from '@onepoint-yap/dashboard';
import { Observable } from 'rxjs';
import { AggregationResult, YapAggregationService } from './base-aggregation.service';
import * as i0 from "@angular/core";
export declare class YapBackendAggregationService extends YapAggregationService {
    private store;
    private snackBar;
    private translateService;
    private httpClient;
    private rs;
    private classes;
    private fields;
    private filters;
    constructor(store: Store, snackBar: YapSnackbarService, translateService: YapI18nService, httpClient: HttpClient);
    aggregate(datasources: string[], options: ChartAggregatedWidgetOptions): Observable<AggregationResult>;
    getValueFromAttribute(item: Item, attribute: Attribute): import("@onepoint-yap/dashboard").AttributeSimpleValue;
    static ɵfac: i0.ɵɵFactoryDeclaration<YapBackendAggregationService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<YapBackendAggregationService>;
}