import { FrameContext } from '@farris/devkit';
/**
 * 实体聚合服务
 */
declare class EntityAggregationService {
    private frameContext;
    private readonly bindingData;
    private traversingService;
    constructor(frameContext: FrameContext);
    /**
     * 获取path对应列表记录的条数
     */
    count(path: string[]): number;
    /**
     * 获取path对应字段的和
     */
    sum(path: string[]): any;
    /**
     * 获取path对应字段的平均值
     */
    avg(path: string[]): number;
    /**
     * 获取path对应字段的最大值
     */
    max(path: string[]): number;
    /**
     * 获取path对应字段的最小值
     */
    min(path: string[]): number;
    /**
     * 获取属性值
     */
    private getPropValue;
    /**
     * 分隔路径，分隔符列表路径和属性路径
     * @return 形如 {parentListPath: [], propertyPath: []}
     */
    private splitPath;
}
export { EntityAggregationService };