Controller function not call in Angular module md-data-table - angularjs

Question

As per documentation of "md-data-table". I have implemented datatable. But function getDesserts is not calling.
Service code is as below
return {
'getPagingData': function (params) {
var defered = $q.defer();
console.log("Get Paging Service...");
pagination.getPagingData(params,function (response) {
defered.resolve(response);
},
function (error) {
defered.reject(error);
});
return defered.promise;
}
}
And Controller code is as below
$scope.selected = [];
$scope.queryy = {
order: 'name',
limit: 5,
page: 1,
className :"Sla"
};
function success(desserts) {
alert("d");
$scope.desserts = desserts;
}
$scope.getDesserts = function () {
alert("d");
//$scope.promise = $nutrition.desserts.get($scope.query, success).$promise;
$scope.promise = pagingService.getPagingDataHttp($scope.queryy, success).$promise;
};
My html code is as below
<!-- exact table from live demo -->
<md-table-container>
<table md-table md-row-select multiple ng-model="selected" md-progress="promise">
<thead md-head md-order="query.order" md-on-reorder="getDesserts">
<tr md-row>
<th md-column md-order-by="nameToLower"><span>Dessert (100g serving)</span></th>
</tr>
</thead>
<tbody md-body>
<tr md-row md-select="dessert" md-select-id="name" md-auto-select ng-repeat="dessert in desserts.data">
<td md-cell>{{dessert.name}}</td>
</tr>
</tbody>
</table>
</md-table-container>
<md-table-pagination md-limit="query.limit" md-limit-options="[5, 10, 15]" md-page="query.page" md-total="{{desserts.count}}" md-on-paginate="getDesserts" md-page-select></md-table-pagination>
After this implementation, getDessert function in controller is not being
called. Kindly guide me