import { DbColumn } from './db-column.model';
import { DbHelperModel } from '../db-helper-model.model';
/**
 * @public
 * @class DbRelationModel
 *
 * @description
 * This class add relation mapping to the table
 *
 * @author  Olivier Margarit
 * @since   0.2
 */
export declare class DbRelationModel {
    private srcModel;
    private foreignModel;
    private reverse;
    /**
     * @private
     * @property {Array<DbColumn>} dbColumns list of columns related to other model
     */
    private dbColumns;
    /**
     * @public
     * @property {{new(): DbHelperModel}} sourceModel source of the relation
     */
    readonly sourceModel: {
        new (): DbHelperModel;
    };
    /**
     * @public
     * @property {{new(): DbHelperModel}} targetModel target of the relation
     */
    readonly targetModel: {
        new (): DbHelperModel;
    };
    /**
     * @public
     * @property {Array<DbColumn>} columns columns list of the relation, multiple columns
     * are needed for composite keys
     */
    readonly columns: DbColumn[];
    /**
     * @public
     * @property {boolean} isReverse check the relation direction
     */
    readonly isReverse: boolean;
    /**
     * @public
     * @property {string} type the computed relation type @see RelationType
     */
    readonly type: string | null;
    /**
     * @public
     * @property {string} key the relation key, allow defining multiple relations between two
     * models and reaching only one of its
     */
    key: string | null;
    /**
     * @private
     * @property {string} relationType the relation type @see RelationType
     */
    private relationType;
    /**
     * @public
     * @constructor create db relation model
     *
     * @param {{new(): DbHelperModel}} srcModel the source model of the relation from the column owner
     * @param {{new(): DbHelperModel}} foreignModel the target model of the relation from the column owner
     * @param {boolean} reverse tag reverse to follow the link reverse from targetted model
     */
    constructor(srcModel: {
        new (): DbHelperModel;
    }, foreignModel: {
        new (): DbHelperModel;
    }, reverse?: boolean);
    /**
     * @public
     * @method add add column to the relation
     *
     * @param {DbColumn} column the column  to add
     */
    add(column: DbColumn): void;
}