this.recline = this.recline || {};

// A Dataset model.
recline.Dataset = Backbone.Model.extend({
  initialize: function(data, rawTabularData) {
    this.tabularData = new recline.TabularData(rawTabularData);
  }

  // get TabularData object associated with this Dataset
  //
  // async (as may involve getting data from the server) implementing standard promise API
  , getTabularData: function() {
    var dfd = $.Deferred();
    dfd.resolve(this.tabularData);
    return dfd.promise();
  }
});

// TabularData model
recline.TabularData = Backbone.Model.extend({
  getLength: function() { 
    return this.get('rows').length;
  }
  , getRows: function(numRows, start) {
    if (start === undefined) {
      start = 0;
    }
    if (numRows === undefined) {
      numRows = 10;
    }
    var dfd = $.Deferred();
    var results = this.get('rows').slice(start, start+numRows);
    dfd.resolve(results);
    return dfd.promise();
  }
});