The conversation scope controller

The heart of our digital customer journey is a managed bean called LendingController. We will break it down gently into easier sections as we go through this chapter.

The initial implementation looks like this:

package uk.co.xenonique.digital.instant.control;
import uk.co.xenonique.digital.instant.boundary.ApplicantService;
import uk.co.xenonique.digital.instant.entity.Address;
import uk.co.xenonique.digital.instant.entity.Applicant;
import uk.co.xenonique.digital.instant.entity.ContactDetail;
import uk.co.xenonique.digital.instant.util.Utility;
// imports elided

@Named("lendingController")
@ConversationScoped
public class LendingController implements Serializable {
  @EJB ApplicantService applicantService;
  @Inject Conversation conversation;
  @Inject Utility utility;

  public final static int DEFAULT_LOAN_TERM = 24;
  public final static BigDecimal DEFAULT_LOAN_AMOUNT = new BigDecimal("7000");
  public final static BigDecimal DEFAULT_LOAN_RATE = new BigDecimal...