YUI3 augmenting datatable plugin to pull schema from received data

gistfile1.js

	function DSJSInData(config) {

	}

	DSJSInData.NAME = "dsjsInData";

	DSJSInData.NS = "schema";

	Y.extend(DSJSInData, Y.Plugin.Base, {

		initializer: function(config) {
			this.doBefore("_defDataFn", this._beforeBeforeDefDataFn);
			//Y.DSJSInData.superclass.initializer.apply(this, arguments);
			this.doBefore("_defDataFn", this._beforeDefDataFn);
		},

		_beforeBeforeDefDataFn: function(e) {
			var data = e.data ? (e.data.responseText ? e.data.responseText : e.data) : e.data;

			if(data.resultFields != null) {
				var theFields = data.resultFields.split("-");
				var theSchema = {
					resultListLocator: "query.results.Result",
					resultFields: theFields
				};
				this.set("schema", theSchema);
			}
			else { //bad data received, replace data with error information
				e.data = "Data Error";
			}
		}
	});


	//Must be augment! The other option is extend, but extends calls superclass constructors first.
	//This is a problem because what we need to do is hook a function in to run BEFORE the original JSON
	//schema's initializer is run. Augmenting with the third parameter equal to true causes the new schema's
	//properties to overwrite the old schema's properties with the same name. The only caveat to this is
	//that you must repeat the original plugin's initializer code after our new code, since the overwriting means
	//that the original initializer will not run.
	Y.augment(Y.Plugin.DataSourceJSONSchema, DSJSInData, true);