setHeaderText from AW.XML.Table column names

I have the following example code

var table = new AW.XML.Table;
table.setURL("webservice.asmx/getDataSet");
table.setParameter("name", "value");
table.setRequestMethod("POST");
table.setRows("//NewDataSet/*"); // data rows XPath
table.request();

var grid = new AW.UI.Grid;
grid.setId("grid");
grid.setHeaderText(["ID", "Author", "Year Born"]);
grid.setColumnCount(3);
grid.setCellModel(table);
grid.refresh();

But since the table load from the database already has the column names I would like not to hardcode the names, just get them from the aw.table.xml column names.
Is this posiible. Please help.

It looks that my question does not make sense.

table.request(); -- doesn't call the webservice and loads the data from the table. The load is done later when the grid is refreshed or writen.

I guess that's why in the Forum for version 1 there is this note:

Dynamically setting Column Text (Headers) From XML Document

I figured out how to assign column headings from the XML Table Model using xpath. Simply override the model.response() function like this.

var grid = ...; // setup grid
var model = ...; // setup model (Using XML Table of course)
var columnTextXpath = "//headers/header"; // or your own friendly xpath
var model_response = model.response;
model.response = function( xml ) {
var hNodes = xml.selectNodes( columnTextXpath );
if (hNodes) {
var h = new Array();
for( i=0; i<hNodes.length; i++ ) {
h.push( hNodes[i].text );
}
grid.setColumnTexts( h );
}
model_response.call( model, xml );
}
model.request();


The url for this note is:
http://www.activewidgets.com/javascript.forum.1055.9/dynamically-setting-column-text-headers.htm

Here is the example for AW 2.0 - it is supposed to work with MS dataset serialized to XML (as in /examples/grid data - xml/dataset.xml) -

var table = new AW.XML.Table;
table.setURL("dataset.xml");
table.setRows("//NewDataSet/*");
table.setNamespace("xs", "http://www.w3.org/2001/XMLSchema");

table.response = function(data){

    this.setXML(data);

    var grid = this.$owner;
    var xml = this._xml;
    var xpath = "//xs:sequence/xs:element";
    var nodes = AW.ie ? xml.selectNodes(xpath) : xml.evaluate(xpath, xml, this._ns, 7, null);
    var columnCount = AW.ie ? nodes.length : nodes.snapshotLength;
    var i, headerText = [];
    for(i=0; i<columnCount;i++){
        headerText.push((AW.ie ? nodes[i] : nodes.snapshotItem(i)).getAttribute("name"));
    }
    //alert(columns);

    grid.clearHeaderModel();
    grid.clearColumnModel();
    grid.setHeaderText(headerText);
    grid.setColumnCount(columnCount);

    grid.clearScrollModel();
    grid.clearSelectedModel();
    grid.clearSortModel();
    grid.clearRowModel();
    grid.setRowCount(this.getCount());
    grid.refresh();
};

table.request();

The code selects 'schema' nodes with //xs:sequence/xs:element XPath and copies column names into headerText array.