loadDataset = function (callback) {
            $http.get("dashboard/getDatasetList.do").success(function (response) {
                $scope.datasetList = response;
                if (callback) {
                    callback();
                }
            });
        }
************************************
 0:  None items
 1:  only 1 item
-1:  None Restrict
 2:  1 or more
*************************************