flymis/WebRoot/dojojs/src/data/old/provider/FlatFile.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.provider.FlatFile");
dojo.require("dojo.data.old.provider.Base");
dojo.require("dojo.data.old.Item");
dojo.require("dojo.data.old.Attribute");
dojo.require("dojo.data.old.ResultSet");
dojo.require("dojo.data.old.format.Json");
dojo.require("dojo.data.old.format.Csv");
dojo.require("dojo.lang.assert");

// -------------------------------------------------------------------
// Constructor
// -------------------------------------------------------------------
dojo.data.old.provider.FlatFile = function(/* keywords */ keywordParameters) {
	/**
	 * summary:
	 * A Json Data Provider knows how to read in simple JSON data
	 * tables and make their contents accessable as Items.
	 */
	dojo.lang.assertType(keywordParameters, "pureobject", {optional: true});
	dojo.data.old.provider.Base.call(this);
	this._arrayOfItems = [];
	this._resultSet = null;
	this._dictionaryOfAttributes = {};

	if (keywordParameters) {
		var jsonObjects = keywordParameters["jsonObjects"];
		var jsonString  = keywordParameters["jsonString"];
		var fileUrl     = keywordParameters["url"];
		if (jsonObjects) {
			dojo.data.old.format.Json.loadDataProviderFromArrayOfJsonData(this, jsonObjects);
		}
		if (jsonString) {
			dojo.data.old.format.Json.loadDataProviderFromFileContents(this, jsonString);
		}
		if (fileUrl) {
			var arrayOfParts = fileUrl.split('.');
			var lastPart = arrayOfParts[(arrayOfParts.length - 1)];
			var formatParser = null;
			if (lastPart == "json") {
				formatParser = dojo.data.old.format.Json;
			}
			if (lastPart == "csv") {
				formatParser = dojo.data.old.format.Csv;
			}
			if (formatParser) {
				var fileContents = dojo.hostenv.getText(fileUrl);
				formatParser.loadDataProviderFromFileContents(this, fileContents);
			} else {
				dojo.lang.assert(false, "new dojo.data.old.provider.FlatFile({url: }) was passed a file without a .csv or .json suffix");
			}