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/*
YUI 3.17.2 (build 9c3c78e)
Copyright 2014 Yahoo! Inc. All rights reserved.
Licensed under the BSD License.
http://yuilibrary.com/license/
*/
YUI.add('yql', function (Y, NAME) {
/**
* This class adds a sugar class to allow access to YQL (http://developer.yahoo.com/yql/).
* @module yql
*/
/**
* Utility Class used under the hood by the YQL class
* @class YQLRequest
* @constructor
* @param {String} sql The SQL statement to execute
* @param {Function/Object} callback The callback to execute after the query (Falls through to JSONP).
* @param {Object} params An object literal of extra parameters to pass along (optional).
* @param {Object} opts An object literal of configuration options (optional): proto (http|https), base (url)
*/
var YQLRequest = function (sql, callback, params, opts) {
if (!params) {
params = {};
}
params.q = sql;
//Allow format override.. JSON-P-X
if (!params.format) {
params.format = Y.YQLRequest.FORMAT;
}
if (!params.env) {
params.env = Y.YQLRequest.ENV;
}
this._context = this;
if (opts && opts.context) {
this._context = opts.context;
delete opts.context;
}
if (params && params.context) {
this._context = params.context;
delete params.context;
}
this._params = params;
this._opts = opts;
this._callback = callback;
};
YQLRequest.prototype = {
/**
* @private
* @property _jsonp
* @description Reference to the JSONP instance used to make the queries
*/
_jsonp: null,
/**
* @private
* @property _opts
* @description Holder for the opts argument
*/
_opts: null,
/**
* @private
* @property _callback
* @description Holder for the callback argument
*/
_callback: null,
/**
* @private
* @property _params
* @description Holder for the params argument
*/
_params: null,
/**
* @private
* @property _context
* @description The context to execute the callback in
*/
_context: null,
/**
* @private
* @method _internal
* @description Internal Callback Handler
*/
_internal: function () {
this._callback.apply(this._context, arguments);
},
/**
* @method send
* @description The method that executes the YQL Request.
* @chainable
* @return {YQLRequest}
*/
send: function () {
var qs = [], url = ((this._opts && this._opts.proto) ? this._opts.proto : Y.YQLRequest.PROTO), o;
Y.Object.each(this._params, function (v, k) {
qs.push(k + '=' + encodeURIComponent(v));
});
qs = qs.join('&');
url += ((this._opts && this._opts.base) ? this._opts.base : Y.YQLRequest.BASE_URL) + qs;
o = (!Y.Lang.isFunction(this._callback)) ? this._callback : { on: { success: this._callback } };
o.on = o.on || {};
this._callback = o.on.success;
o.on.success = Y.bind(this._internal, this);
this._send(url, o);
return this;
},
/**
* Private method to send the request, overwritten in plugins
* @method _send
* @private
* @param {String} url The URL to request
* @param {Object} o The config object
*/
_send: function() {
//Overwritten in plugins
}
};
/**
* @static
* @property FORMAT
* @description Default format to use: json
*/
YQLRequest.FORMAT = 'json';
/**
* @static
* @property PROTO
* @description Default protocol to use: http
*/
YQLRequest.PROTO = 'http';
/**
* @static
* @property BASE_URL
* @description The base URL to query: query.yahooapis.com/v1/public/yql?
*/
YQLRequest.BASE_URL = ':/' + '/query.yahooapis.com/v1/public/yql?';
/**
* @static
* @property ENV
* @description The environment file to load: http://datatables.org/alltables.env
*/
YQLRequest.ENV = 'http:/' + '/datatables.org/alltables.env';
Y.YQLRequest = YQLRequest;
/**
* This class adds a sugar class to allow access to YQL (http://developer.yahoo.com/yql/).
* @class YQL
* @constructor
* @param {String} sql The SQL statement to execute
* @param {Function} callback The callback to execute after the query (optional).
* @param {Object} params An object literal of extra parameters to pass along (optional).
* @param {Object} opts An object literal of configuration options (optional): proto (http|https), base (url)
*/
Y.YQL = function (sql, callback, params, opts) {
return new Y.YQLRequest(sql, callback, params, opts).send();
};
}, '3.17.2', {"requires": ["oop"]});