모델5 @Embeddable

@Embeddable 애노테이션을 지정한 클래스를 밸류 클래스라고 합니다. 밸류 클래스란 int, double 처럼 하나의 값을 나타내는 클래스를 말합니다. 보통 주소(address)라는 값을 저장하기 위해서는 아래와 같이 String 변수에 저장하여 관리할 것입니다. 

java

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package com.example.model.entity;

import lombok.Getter;
import lombok.Setter;
import lombok.ToString;

import javax.persistence.Embeddable;
import java.util.Objects;

@Embeddable
@Setter
@Getter
@ToString
public class Address {

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

​​​​public Address() {
​​​​}

​​​​public Address(String city, String street, String zipcode){
​​​​​​​​this.city = city;
​​​​​​​​this.street = street;
​​​​​​​​this.zipcode = 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(city, address.city) &&
​​​​​​​​​​​​​​​​Objects.equals(street, address.street) &&
​​​​​​​​​​​​​​​​Objects.equals(zipcode, address.zipcode);
​​​​}

​​​​@Override
​​​​public int hashCode() {
​​​​​​​​return Objects.hash(city, street, zipcode);
​​​​}
}

 

java

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package com.example.model.entity;

import lombok.Getter;
import lombok.Setter;
import lombok.ToString;

import javax.persistence.*;
import java.util.ArrayList;
import java.util.List;

@Getter
@Setter
@ToString(exclude = {"orders"})
@Entity
public class Member extends BaseEntity {

​​​​@Id
​​​​@GeneratedValue
​​​​@Column(name="MEMBER_ID")
​​​​private Long id;

​​​​private String name;

​​​​@Embedded
​​​​private Address address;

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

}