@Entity
 @RooJavaBean
 @RooToString
 @RooEntity
 public class Customer {
 
     /* Varje kund har ett namn som inte får vara null. */
     @NotNull
     private String name;
 
     /* Varje kund har ett postnummer som består av tre eller flera siffror. */
     @NotNull
     @Size(min = 3)
     @Pattern(regexp = "[0-9]*")
     private String zipcode;
 
     /* Varje kund har ett antal ordrar. */
     @OneToMany(targetEntity = MyOrder.class)
     @JoinColumn
     private Collection<MyOrder> orders;
 
     // Etc. Övriga fält borttagna för att korta ner exemplet.
 }

 privileged aspect Customer_Roo_JavaBean {
    
     public String Customer.getName() {
         return this.name;
     }
 
     public void Customer.setName(String name) {
         this.name = name;
     }
 
     // Etc. Övriga metoder har utelämnats för att korta ner exemplet.
 }
 

 privileged aspect Customer_Roo_Entity {
     
     @PersistenceContext
     transient EntityManager Customer.entityManager;
     
     @Id
     @GeneratedValue(strategy = GenerationType.AUTO)
     @Column(name = "id")
     private Long Customer.id;
     
     @Version
     @Column(name = "version")
     private Integer Customer.version;
     
     public Long Customer.getId() {
         return this.id;
     }
     
     public void Customer.setId(Long id) {
         this.id = id;
     }
     
     public Integer Customer.getVersion() {
         return this.version;
     }
     
     public void Customer.setVersion(Integer version) {
         this.version = version;
     }
     
     @Transactional
     public void Customer.persist() {
         if (this.entityManager == null) this.entityManager = entityManager();
         this.entityManager.persist(this);
     }
     
     @Transactional
     public void Customer.remove() {
         if (this.entityManager == null) this.entityManager = entityManager();
         if (this.entityManager.contains(this)) {
             this.entityManager.remove(this);
         } else {
             Customer attached = this.entityManager.find(Customer.class, this.id);
             this.entityManager.remove(attached);
         }
     }
     
     @Transactional
     public void Customer.flush() {
         if (this.entityManager == null) this.entityManager = entityManager();
         this.entityManager.flush();
     }
     
     @Transactional
     public void Customer.merge() {
         if (this.entityManager == null) this.entityManager = entityManager();
         Customer merged = this.entityManager.merge(this);
         this.entityManager.flush();
         this.id = merged.getId();
     }
     
     public static final EntityManager Customer.entityManager() {
         EntityManager em = new Customer().entityManager;
         if (em == null) throw new IllegalStateException("Entity manager has not been injected (is the Spring Aspects JAR configured as an AJC/AJDT aspects library?)");
         return em;
     }
     
     public static long Customer.countCustomers() {
         return (Long) entityManager().createQuery("select count(o) from Customer o").getSingleResult();
     }
     
     public static List<Customer> Customer.findAllCustomers() {
         return entityManager().createQuery("select o from Customer o").getResultList();
     }
     
     public static Customer Customer.findCustomer(Long id) {
         if (id == null) return null;
         return entityManager().find(Customer.class, id);
     }
     
     public static List<Customer> Customer.findCustomerEntries(int firstResult, int maxResults) {
         return entityManager().createQuery("select o from Customer o").setFirstResult(firstResult).setMaxResults(maxResults).getResultList();
     }
 }