MVC controllers

There is a new package structure reserved for MVC under javax.mvc. The @javac.mvc.Controller annotation declares a class type or method as a controller component. Here is an example of its use in a method:

@Controller
public String greet()
{
  return "Greetings, Earthling";
}

This controller method is missing the HTTP semantics and this is where the JAX-RS annotations help. It is also useless from an MVC perspective because there are associations with either a Model or View component.

So, first let's turn the method into a proper RESTful resource, starting with the model object:

package uk.co.xenonique.basic.mvc;
import javax.enterprise.context.RequestScoped;
import javax.inject.Named;
@Named(value="user")
@RequestScoped
public class User {
  private String name;
  public User() {}
  public String getName() {return name; }
  public void setName(String name) {this.name = name; }
}

The User component serves as our Model component. It has one property: the name of the person whom...