2 

     3 IriSP.DataLoader = function() {

     4   this._cache = {};

     5 };

     6 

     7 IriSP.DataLoader.prototype.get = function(url, callback) {  

     8   if (this._cache.hasOwnProperty(url)) {

     9     callback(this._cache[url]);

    10   } else {

    11     /* we need a closure because this gets lost when it's called back */

    12     IriSP.jQuery.get(url, (function(obj) {      

    13                                return function(data) {

    14                                   obj._cache[url] = data;      

    15                                   callback(obj._cache[url]);

    16                                 }; 

    17                               })(this));

    18        

    19   }

    20 }

    21 

    22 IriSP.Serializer = function(DataLoader) {

    23   this.DataLoader = DataLoader;

    24 };