import { BpmsEngine } from '../BpmsEngine';
import { QueryOptions, QueryResult, ScalarOptions, FilterExpression, BpmsRepository, QueryResultSet } from '../data/Repository';
import { BpmsService } from '../BpmsService';
export interface QueryServiceOptions {
    name: string;
}
export declare type SourceName = string | string[];
export declare class QueryService implements BpmsService {
    private bpmsEngine?;
    private id;
    private options;
    private sources;
    constructor(bpmsEngine?: BpmsEngine | undefined, options?: QueryServiceOptions);
    static createService(options?: QueryServiceOptions): QueryService;
    static createService(bpmsEngine?: BpmsEngine, options?: QueryServiceOptions): QueryService;
    get Id(): string;
    get Name(): string;
    get BpmsEngine(): BpmsEngine | undefined;
    getRepositories(): Promise<Record<string, BpmsRepository<any>>>;
    count(source: SourceName, filter?: FilterExpression): Promise<QueryResultSet<number>>;
    query<R>(source: SourceName, options: QueryOptions): Promise<QueryResultSet<QueryResult<R>>>;
    scalar(source: SourceName, options: ScalarOptions): Promise<QueryResultSet<number>>;
    private getExecutingRepositories;
    private loadRepositories;
}