import { ComponentStore } from '@metad/store';
import { Observable } from 'rxjs';
import { Agent, OcapCache } from './agent';
import { DataSource, DataSourceFactory, DataSourceOptions } from './data-source';
import { EntitySet } from './models';
import { TimeGranularity } from './models/index';
/**
 * State type of DataSource core service
 */
export interface DSState {
    dataSources: DataSourceOptions[];
    today?: Date;
    timeGranularity?: TimeGranularity;
}
/**
 * DataSource core store
 *
 * - Register semantic model
 * - Create data source object for model
 * - Create entity service for cube
 */
export declare class DSCoreService extends ComponentStore<DSState> {
    #private;
    agents: Array<Agent>;
    factories: Array<{
        type: string;
        factory: DataSourceFactory;
    }>;
    cacheService?: OcapCache;
    readonly timeGranularity$: Observable<TimeGranularity>;
    readonly currentTime$: Observable<{
        today: Date;
        timeGranularity: TimeGranularity;
    }>;
    private _dataSources;
    constructor(agents: Array<Agent>, dataSources: Array<DataSourceOptions>, factories: Array<{
        type: string;
        factory: DataSourceFactory;
    }>, cacheService?: OcapCache);
    registerModel: (observableOrValue: DataSourceOptions | Observable<DataSourceOptions>) => import("rxjs").Subscription;
    /**
     * @todo 共用 DataSource 对象
     *
     * @param key The key of data source
     * @returns
     */
    getDataSource(key: string): Observable<DataSource>;
    /**
     * New async method to get DataSource object
     *
     * @deprecated 慎用 _dataSources 与 #dataSources 不一致问题
     *
     * @param key
     * @returns
     */
    _getDataSource(key: string): Promise<DataSource>;
    private createDataSource;
    getEntityService(dataSource: string, entitySet: string): Observable<import("./entity").EntityService<unknown>>;
    /**
     * @deprecated use `selectEntitySet`
     */
    getEntitySet(dataSource: string, entity: string): Observable<EntitySet>;
    /**
     * Observe first correct EntitySet, filterd not Error
     *
     * @param dataSource
     * @param entity
     * @returns
     */
    selectEntitySet(dataSource: string, entity: string): Observable<EntitySet>;
    /**
     * Observe EntitySet or Error
     *
     * @param dataSource
     * @param entity
     * @returns
     */
    selectEntitySetOrFail(dataSource: string, entity: string): Observable<EntitySet | Error>;
    setTimeGranularity(timeGranularity: TimeGranularity): void;
    setToday(today: Date): void;
    getToday(): {
        today: Date;
        timeGranularity: TimeGranularity;
    };
}