import { Rule } from './Rule';
export declare enum ODataFunc {
    toLower = "tolower",
    concat = "concat",
    toUpper = "toupper",
    length = "length",
    indexOf = "indexof",
    trim = "trim",
    round = "round",
    floor = "floor",
    ceiling = "ceiling"
}
export declare class ODataFunctions {
    toLower(str: string): Rule;
    concat(str: string): Rule;
    toUpper(str: string): Rule;
    length(str: string): Rule;
    indexOf(str: string): Rule;
    floor(str: string): Rule;
    ceiling(str: string): Rule;
    trim(str: string): Rule;
    round(str: string): Rule;
    private toFuncRule;
}