function startup() //Startup function.
{
createCustomerRDF('http://in.geocities.com/skexz/tuts/xul/in-memory/customers.xml');
}

function requestXMLdocument(URL) //requesting XML file from the remote location
{
var oXML=new XMLHttpRequest();
oXML.open("GET",URL,false);
oXML.send(null);
//Returning the document content to the XML parser function
return oXML.responseText;
}

function readXMLdocument(URL) //Parsing XML message.
{
xmlMessage = requestXMLdocument(URL);
this.parser = new DOMParser();
var xmlDOM = this.parser.parseFromString(xmlMessage, "text/xml");
//Returning the XML DOM.
return xmlDOM;
}

function createCustomerRDF(URL){ //Creating customers In-Memory RDF feed

var xmlDoc = readXMLdocument(URL);
var customers = xmlDoc.documentElement;
var customer = customers.getElementsByTagName("customer");

// get the XPCOM services we need to work with RDF's
var RDF =
Components.classes['@mozilla.org/rdf/rdf-service;1'].getService();
RDF = RDF.QueryInterface(Components.interfaces.nsIRDFService);

var RDFC = Components.classes['@mozilla.org/rdf/container;1'].getService();
RDFC = RDFC.QueryInterface(Components.interfaces.nsIRDFContainer);

var RDFCUtils =
Components.classes['@mozilla.org/rdf/container-utils;1'].getService();
RDFCUtils =
RDFCUtils.QueryInterface(Components.interfaces.nsIRDFContainerUtils);

var ds =
Components.classes["@mozilla.org/rdf/datasource;1?name=in-memory-datasource"].createInstance();
ds = ds.QueryInterface(Components.interfaces.nsIRDFDataSource);

// create our root nodes
var rootNode = RDF.GetResource("urn:root");
var seqNode = RDF.GetResource("urn:root:seq");

// insert the "top" of the tree, a Seq container
ds.Assert(rootNode,
RDF.GetResource("http://www.bttlindia.com/RDF#subheadings"),
seqNode, true);

RDFCUtils.MakeSeq(ds, seqNode);
RDFC.Init(ds, seqNode);

// get the tree and add the datasource
var tree = document.getElementById("bo-customer-tree");
tree.database.AddDataSource(ds);

// let's add some data.
for (var i = 0; i < customer.length; i++) {
var newURI = "urn:root:file:" + i;

// add the new element
RDFC.AppendElement(RDF.GetResource(newURI));

ds.Assert(RDF.GetResource(newURI),
RDF.GetResource("http://www.bttlindia.com/RDF#id"),
RDF.GetLiteral(customer[i].getAttribute("id")), true);

ds.Assert(RDF.GetResource(newURI),
RDF.GetResource("http://www.bttlindia.com/RDF#name"),
RDF.GetLiteral(customer[i].getAttribute("name")), true);

ds.Assert(RDF.GetResource(newURI),
RDF.GetResource("http://www.bttlindia.com/RDF#phone"),
RDF.GetLiteral(customer[i].getAttribute("phone")), true);

ds.Assert(RDF.GetResource(newURI),
RDF.GetResource("http://www.bttlindia.com/RDF#fiscalnumber"),
RDF.GetLiteral(customer[i].getAttribute("fiscalnumber")), true);
}

tree.builder.rebuild();
}

/* Updated on 1/12/04. */
function selectCustomer(event)
{
   // the tree is the target of the event
  var tree = event.target;
  var customerId =tree.view.getCellText(tree.currentIndex,"customer-id");
  var customerName =tree.view.getCellText(tree.currentIndex,"customer-name");
  alert("Customer ID : " + customerId +"\n"+
  "Customer name : "+ customerName +"");
}