//inject service that holds the actual data.
.directive('myDirective', ['myService', function(myService){
    return {
        restrict: 'C',
        link: function (scope, element, attrs) {
            //Make sure to run Polymers dirty-checking when scope changes
            scope.$watch(Platform.performMicrotaskCheckpoint);

            //Create data object
            var data = {
                cols: {
                    userId: { index: 1, type: "number", friendly: "UserId", unique: true, sortOrder: "asc" },
                    name: { index: 2, type: "string", friendly: "Name" },
                    age: { index: 3, type: "number", friendly: "Age" }
                },
                //Get reference to service rows array.
                rows: myService.getRows()
                /*
                    Remember... this is a reference. So in myService, you can never again assign a new array (i.e. myService.rows=[]).
                    If you need to clear the array, just do myService.rows.length=0; (or splice/shift/pop or whatever you like)
                */
            };

            //Initiate WATable
            var waTable = $(element).WATable({ dataBind: true }).data('WATable'); //Init with dataBind option

            //Assign data
            waTable.setData(data);
        }
    }
}]);