customer.java

JPA入门文章源码

package entity;

import javax.persistence.*;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;

/**
 * This example adds a Address object to the customer.
 * Address is represented just as a simple attribut.
 *
 * @author Antonio Goncalves
 */
@Entity
@Table(name = "t4_customer")
public class Customer {

    // ======================================
    // =             Attributs              =
    // ======================================
    @Id
    @GeneratedValue
    private Long id;
    @Column(nullable = false)
    private String firstname;
    @Column(nullable = false, length = 30)
    private String lastname;
    @Column(length = 15)
    private String telephone;
    @Column(name = "e_mail")
    private String email;
    @Column(name = "date_of_birth")
    @Temporal(TemporalType.DATE)
    private Date dateOfBirth;
    @Transient
    private Integer age;

    private Address homeAddress;

    // ======================================
    // =            Constructors            =
    // ======================================

    public Customer() {
    }


    public Customer(String firstname, String lastname, String telephone, String email, Date dateOfBirth) {
        this.firstname = firstname;
        this.lastname = lastname;
        this.telephone = telephone;
        this.email = email;
        this.dateOfBirth = dateOfBirth;
    }

    // ======================================
    // =    Callback annotated methods      =
    // ======================================
    @PrePersist
    @PreUpdate
    private void validatePhoneNumber() {
        if (telephone == null || "".equals(telephone)) {
            return;
        }
        if (telephone.charAt(0) != '+')
            throw new IllegalArgumentException("Invalid phone number");
    }

    /**
     * Calculates the customer's age.
     */
    @PostLoad
    @PostPersist
    @PostUpdate
    public void calculateAge() {
        if (dateOfBirth == null) {
            age = null;
            return;
        }

        Calendar birth = new GregorianCalendar();
        birth.setTime(dateOfBirth);
        Calendar now = new GregorianCalendar();
        now.setTime(new Date());
        int adjust = 0;
        if (now.get(Calendar.DAY_OF_YEAR) - birth.get(Calendar.DAY_OF_YEAR) < 0) {
            adjust = -1;
        }
        age = now.get(Calendar.YEAR) - birth.get(Calendar.YEAR) + adjust;
    }

    // ======================================
    // =         Getters & Setters          =
    // ======================================

    public Long getId() {
        return id;
    }

    public String getFirstname() {
        return firstname;
    }

    public void setFirstname(String firstname) {
        this.firstname = firstname;
    }

    public String getLastname() {
        return lastname;
    }

    public void setLastname(String lastname) {
        this.lastname = lastname;
    }

    public String getTelephone() {
        return telephone;
    }

    public void setTelephone(String telephone) {
        this.telephone = telephone;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    public Integer getAge() {
        return age;
    }

    public Date getDateOfBirth() {
        return dateOfBirth;
    }

    public void setDateOfBirth(Date dateOfBirth) {
        this.dateOfBirth = dateOfBirth;
    }

    public Address getHomeAddress() {
        return homeAddress;
    }

    public void setHomeAddress(Address homeAddress) {
        this.homeAddress = homeAddress;
    }
}