/**
 * Licensed Materials - Property of IBM
 * IBM Watson Analytics (C) Copyright IBM Corp. 2016
 * US Government Users Restricted Rights - Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
 *
 */
/* jshint ignore:start */
if (typeof define !== 'function') { // NOSONAR
	var define = require('amdefine')(module); // NOSONAR
}
/* jshint ignore:end */

define([
	'bluebird'
],
function(Promise) {
	'use strict';

	var Upgrade = function() {

		/**
		 * This is an integer value. The higher the value the higher the version. i.e. 3 < 500
		 * @type {integer}
		 */
		this.VERSION = null;
	};

	/**
	 * This performs a migration from an older version to a newer version
	 * @param  {obj} obj - The javascript object to perform migration on
	 * @return {promise}	- resolved with the upgraded object
	 */
	Upgrade.prototype.up = function (obj) {
		return Promise.resolve(obj);
	};

	/**
	 * This performs a migration from a newer version to a older version
	 * It is important not to remove any data, otherwise downgrades are not possible
	 * @param  {obj} obj - The javascript object to perform migration on
	 * @return {promise}	- resolved with the downgraded object
	 */
	Upgrade.prototype.down = function (obj) {
		return Promise.resolve(obj);
	};

	return Upgrade;
});