How to “throw” JSF2 404 error?

Question

Let\'s say that I have an application which manages users. You can add new user, delete them, edit detail etc. Each user has na ID and has detail page on URL like this:

Answer 1

Just attach a validator to the id view parameter and if validation fails, set error code 404 on the response.

e.g.

Consider this simple Facelet:

And the following backing bean:

@ManagedBean
@ViewScoped
public class MyBean {

    private Long id;

    public void validate(FacesContext context, UIComponent component, Object object) {
        // Do some validation
        // And if failed:
        context.getExternalContext().setResponseStatus(404);
        context.responseComplete();
    }

    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

}