KendoUI how to use local data, not form url

dataSource: {
  transport: {
    read: function(options){
        options.success(data); // where data is the local data array
    },

...

//use ajax in kendo ui update function

update: function(options) {

  $.ajax({

    type: "POST",

    url: "<my_url>",

    data: options.data,

    dataType: "json",

    success: function(data, textStatus, jqXHR) {

        options.success(data, textStatus, jqXHR);

    },

    error: function(jqXHR, textStatus, errorThrown) {

      options.error(data, textStatus, jqXHR);

    },

  });

}