flymis/WebRoot/dojojs/src/data/old/Item.js

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/*
	Copyright (c) 2004-2006, The Dojo Foundation
	All Rights Reserved.

	Licensed under the Academic Free License version 2.1 or above OR the
	modified BSD license. For more information on Dojo licensing, see:

		http://dojotoolkit.org/community/licensing.shtml
*/

dojo.provide("dojo.data.old.Item");
dojo.require("dojo.data.old.Observable");
dojo.require("dojo.data.old.Value");
dojo.require("dojo.lang.common");
dojo.require("dojo.lang.assert");

// -------------------------------------------------------------------
// Constructor
// -------------------------------------------------------------------
dojo.data.old.Item = function(/* dojo.data.old.provider.Base */ dataProvider) {
	/**
	 * summary:
	 * An Item has attributes and attribute values, sort of like 
	 * a record in a database, or a 'struct' in C.  Instances of
	 * the Item class know how to store and retrieve their
	 * attribute values.
	 */
	dojo.lang.assertType(dataProvider, dojo.data.old.provider.Base, {optional: true});
	dojo.data.old.Observable.call(this);
	this._dataProvider = dataProvider;
	this._dictionaryOfAttributeValues = {};
};
dojo.inherits(dojo.data.old.Item, dojo.data.old.Observable);

// -------------------------------------------------------------------
// Public class methods
// -------------------------------------------------------------------
dojo.data.old.Item.compare = function(/* dojo.data.old.Item */ itemOne, /* dojo.data.old.Item */ itemTwo) {
	/**
	 * summary:
	 * Given two Items to compare, this method returns 0, 1, or -1.
	 * This method is designed to be used by sorting routines, like
	 * the JavaScript built-in Array sort() method.
	 * 
	 * Example:
	 * <pre>
	 *   var a = dataProvider.newItem("kermit");
	 *   var b = dataProvider.newItem("elmo");
	 *   var c = dataProvider.newItem("grover");
	 *   var array = new Array(a, b, c);
	 *   array.sort(dojo.data.old.Item.compare);
	 * </pre>
	 */
	dojo.lang.assertType(itemOne, dojo.data.old.Item);
	if (!dojo.lang.isOfType(itemTwo, dojo.data.old.Item)) {
		return -1;
	}
	var nameOne = itemOne.getName();
	var nameTwo = itemTwo.getName();
	if (nameOne == nameTwo) {