flymis/WebRoot/dojojs/src/data/csv/CsvStore.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.csv.CsvStore");
dojo.require("dojo.data.Read");
dojo.require("dojo.lang.assert");

dojo.declare("dojo.data.csv.CsvStore", dojo.data.Read, {
	/* summary:
	 *   The CsvStore implements the dojo.data.Read API.  
	 */
	 
	/* examples:
	 *   var csvStore = new dojo.data.csv.CsvStore({url:"movies.csv");
	 *   var csvStore = new dojo.data.csv.CsvStore({url:"http://example.com/movies.csv");
	 *   var fileContents = dojo.hostenv.getText("movies.csv");
	 *   var csvStore = new dojo.data.csv.CsvStore({string:fileContents);
	 */
	initializer: 
		function(/* object */ keywordParameters) {
			// keywordParameters: {string: String, url: String}
			this._arrayOfItems = [];
			this._loadFinished = false;
			this._csvFileUrl = keywordParameters["url"];
			this._csvFileContents = keywordParameters["string"];
		},
	get:
		function(/* item */ item, /* attribute or attribute-name-string */ attribute, /* value? */ defaultValue) {
			// summary: See dojo.data.Read.get()
			var attributeValue = item[attribute] || defaultValue;
			return attributeValue; // a literal, an item, null, or undefined (never an array)
		},
	getValues:
		function(/* item */ item, /* attribute or attribute-name-string */ attribute) {
			// summary: See dojo.data.Read.getValues()
			var array = [this.get(item, attribute)];
			return array; // an array that may contain literals and items
		},
	getAttributes:
		function(/* item */ item) {
			// summary: See dojo.data.Read.getAttributes()
			var array = this._arrayOfKeys;
			return array; // array
		},
	hasAttribute:
		function(/* item */ item, /* attribute or attribute-name-string */ attribute) {
			// summary: See dojo.data.Read.hasAttribute()
			for (var i in this._arrayOfKeys) {
				if (this._arrayOfKeys[i] == attribute) {
					return true;
				}
			}
			return false; // boolean
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