Create Ticket Entity

In this lesson, we'll build the Ticket entity, which represents a purchased ticket for an event.

Create the Ticket Entity

A ticket is a record of a purchase that gives someone access to an event. Each ticket needs to track its status, who bought it, and what type of ticket it is.

Let's create our Ticket class:

@Entity
@Table(name = "tickets")
@Getter
@Setter
@NoArgsConstructor
@AllArgsConstructor
@Builder
public class Ticket {

    @Id
    @Column(name = "id", nullable = false, updatable = false)
    @GeneratedValue(strategy = GenerationType.UUID)
    private UUID id;

    @Column(name = "status", nullable = false)
    @Enumerated(EnumType.STRING)
    private TicketStatusEnum status;

    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "ticket_type_id")
    private TicketType ticketType;

    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "purchaser_id")
    private User purchaser;

    // TODO: Validation

    // TODO: QrCode

    @CreatedDate
    @Column(name = "created_at", updatable = false, nullable = false)
    private LocalDateTime createdAt;

    @LastModifiedDate
    @Column(name = "updated_at", nullable = false)
    private LocalDateTime updatedAt;

}

Update the Ticket Type Entity

We also need to update our TicketType class to include the inverse relationship:

@Entity
@Table(name = "ticket_types")
@Getter
@Setter
@NoArgsConstructor
@AllArgsConstructor
@Builder
public class TicketType {

    @Id
    @Column(name = "id", nullable = false, updatable = false)
    @GeneratedValue(strategy = GenerationType.UUID)
    private UUID id;

    @Column(name = "name", nullable = false)
    private String name;

    @Column(name = "price", nullable = false)
    private Double price;

    @Column(name = "total_available")
    private Integer totalAvailable;

    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "event_id")
    private Event event;

    @OneToMany(mappedBy = "ticketType", cascade = CascadeType.ALL)
    private List<Ticket> tickets = new ArrayList<>();

    @CreatedDate
    @Column(name = "created_at", updatable = false, nullable = false)
    private LocalDateTime createdAt;

    @LastModifiedDate
    @Column(name = "updated_at", nullable = false)
    private LocalDateTime updatedAt;
}

Summary

Created Ticket class to model a ticket to an event
Added tickets reference to the TicketType class