# 실전 예제

![](/files/-MXLYZwL6-TTb6nC7hHy)

* 주소를 값 타입으로 정의한다.

{% tabs %}
{% tab title="Address.java" %}

```java
@Embeddable
@Getter
@Setter
public class Address {

    private String city;
    private String street;
    private String zipcode;

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        Address address = (Address) o;
        return Objects.equals(getCity(), address.getCity()) && Objects
                .equals(getStreet(), address.getStreet()) && Objects
                .equals(getZipcode(), address.getZipcode());
    }

    @Override
    public int hashCode() {
        return Objects.hash(getCity(), getStreet(), getZipcode());
    }
}
```

{% endtab %}
{% endtabs %}

![](/files/-MXLYZwSsxQcPgD0PBSC)

* `equals()` 재정의
  * `Use getters` 옵션을 체크해 필드에 직접 접근하지 않고 getter로 접근하게 만든다.
  * 프록시일 때는 getter로만 진짜 객체에 접근할 수 있기 때문이다.

{% tabs %}
{% tab title="Delivery.java" %}

```java
@Entity
public class Delivery {
    @Id
    @GeneratedValue
    private Long id;

    @Embedded
    private Address address;

    private DeliveryStatus status;

    @OneToOne(mappedBy = "delivery", fetch = FetchType.LAZY)
    private Order order;
}
```

{% endtab %}

{% tab title="Member.java" %}

```java
@Entity
public class Member {
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(name = "member_id")
    private Long id;
    private String name;

    @Embedded
    private Address address;

    @OneToMany(mappedBy = "member")
    private List<Order> orders = new ArrayList<>();
}
```

{% endtab %}
{% endtabs %}

![](/files/-MXLYZwZsu8WM8VgkZkz)

![](/files/-MXLYZwc9-C736DCuQ6q)

`member`와 `delivery`에 Address 값 타입이 생성되었다.

{% tabs %}
{% tab title="Address.java" %}

```java
@Embeddable
public class Address {

    // 조건을 추가할 수 있다.
    @Column(length = 10)
    private String city;

    @Column(length = 20)
    private String street;

    @Column(length = 5)
    private String zipcode;

    // 의미 있는 비즈니스 메서드를 만들 수 있다.
    public String fullAddress() {
        return getCity() + getStreet() + getZipcode();
    }
}
```

{% endtab %}
{% endtabs %}

![](/files/-MXLYZwkH41wLkk6VmV3)

* 값 타입을 만들면 공통으로 값을 관리할 수 있다.
  * 조건을 넣거나 의미있는 메서드를 만들 수 있어 편리하다.


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