import { RestQuery, QueryAgg, QuerySort, QueryColumn, QueryParams, PageData } from './restquery';
import { SortDir, DataAgg } from '../meta/basetype';
export declare class QueryBuilder {
    first: number;
    rows: number;
    orderBy: string;
    limit: number;
    aggregate: QueryAgg[];
    sort: QuerySort[];
    search: QueryParams;
    columns: QueryColumn[];
    static get(): QueryBuilder;
    static buildPage<T>(datas: T[]): PageData<T>;
    getQueryInfo(): RestQuery;
    setPage(first: number, size: number): this;
    setLimit(limit: number): this;
    setOrder(orderBy: string): this;
    addSort(field: string, dir?: SortDir): this;
    /**
     * 添加小计（用于列表Footer合计）
     */
    addAgg(propName: string, agg: DataAgg): this;
    addParam(paramName: string, paramVal: any): this;
    addColunm(field: string, alias?: string, agg?: DataAgg): this;
    /**
     * @description shortcut for group
     *
     */
    groupby(field: string, alias?: string): this;
    sum(field: string, alias?: string): this;
    avg(field: string, alias?: string): this;
    count(field: string, alias?: string): this;
    min(field: string, alias?: string): this;
    max(field: string, alias?: string): this;
    addQueryInfo(qi: RestQuery): this;
}