8.価格タイプ

1.デフォルトのタイプ

2.埋め込み式

3.比較値タイプ

4.値タイプの集合

@ElementCollection
@CollectionTable(name = "FAVORITE_FOODS",
            joinColumns = @JoinColumn(name="MEMBER_ID")
)
@Column(name = "FOOD_NAME") // SET 속성이라 나머지 속성이 하나밖에 없어서 설정 가능
private Set<String> favoriteFoods = new HashSet<>();

@ElementCollection
@CollectionTable(name = "ADDRESS",
            joinColumns = @JoinColumn(name="MEMBER_ID")
)
private List<Address> addressHistory = new ArrayList<>();

Member member1 = em.find(Member.class, member.getId());
Address a = member1.getHomeAddress();
member1.setHomeAddress(new Address("newCity", a.getStreet(), a.getZipcode()));

member1.getFavoriteFoods().remove("치킨");
member1.getFavoriteFoods().add("한식");