import { Class } from '../common-types';
import { Entity } from '../model';
export declare enum RelationType {
    belongsTo = 0,
    hasOne = 1,
    hasMany = 2,
    embedsOne = 3,
    embedsMany = 4,
    referencesOne = 5,
    referencesMany = 6,
}
export declare const RELATION_KEY = "loopback:relation";
export declare class RelationMetadata {
    type: RelationType;
    target: string | Class<Entity>;
    as: string;
}
/**
 * Decorator for relations
 * @param definition
 * @returns {(target:any, key:string)}
 */
export declare function relation(definition?: Object): (target: any, key: string) => void;
/**
 * Decorator for belongsTo
 * @param definition
 * @returns {(target:any, key:string)}
 */
export declare function belongsTo(definition?: Object): (target: any, key: string) => void;
/**
 * Decorator for hasOne
 * @param definition
 * @returns {(target:any, key:string)}
 */
export declare function hasOne(definition?: Object): (target: any, key: string) => void;
/**
 * Decorator for hasMany
 * @param definition
 * @returns {(target:any, key:string)}
 */
export declare function hasMany(definition?: Object): (target: any, key: string) => void;
/**
 * Decorator for embedsOne
 * @param definition
 * @returns {(target:any, key:string)}
 */
export declare function embedsOne(definition?: Object): (target: any, key: string) => void;
/**
 * Decorator for embedsMany
 * @param definition
 * @returns {(target:any, key:string)}
 */
export declare function embedsMany(definition?: Object): (target: any, key: string) => void;
/**
 * Decorator for referencesOne
 * @param definition
 * @returns {(target:any, key:string)}
 */
export declare function referencesOne(definition?: Object): (target: any, key: string) => void;
/**
 * Decorator for referencesMany
 * @param definition
 * @returns {(target:any, key:string)}
 */
export declare function referencesMany(definition?: Object): (target: any, key: string) => void;