Expert Spring MVC and Web Flow

Listing 8-33 shows the definition of the HomePageclass that is our XSLT View. We’re gener-
ating the XML representation manually as an example, but as we’ve seen, this may not be an
ideal use of CPU cycles.

Listing 8-33.HomePage XSLT View Class Definition

public class HomePage extends AbstractXsltView {

public HomePage() {

super();

}

/**

* @see AbstractXsltView#createXsltSource()

*/

@Override

protected Source createXsltSource(

Map model,

String root,

HttpServletRequest request,

HttpServletResponse response)

throws Exception {

// possibly not the best way to generate your

// XML representation. See discussion in the text

List<SpecialDeal> specials =

(List<SpecialDeal>) model.get("specials");

Document doc =

DocumentBuilderFactory

.newInstance()

.newDocumentBuilder()

.newDocument();

Element rootEl = doc.createElement(root);

doc.appendChild(rootEl);

for (SpecialDeal deal : specials) {

Element dealEl = doc.createElement("deal");

Element fromEl = doc.createElement("from");

fromEl.appendChild(

doc.createTextNode(deal.getDepartFrom().getName()));

Element toEl = doc.createElement("to");

toEl.appendChild(

doc.createTextNode(deal.getArriveAt().getName()));

CHAPTER 8 ■SUPPORTED VIEW TYPES 251