21/08/121(토) JPA 스터디 자료입니다. Covenant: https://github.com/KoEonYack <><

1. JPA
Covenant Ko
Chapter 2 Object Relational Mapping
JPA

2. - Name. Covenant Ko
- Company. 11번가
- Github 용감한친구들 Organization Founder & Maintainer. https://github.com/brave-people
- Github. https://github.com/KoEonYack
- Tech Blog. https://covenant.tistory.com/ (누적 방문 41만)

3. ORM ?
https://okky.kr/article/286812

4. ORM ?
https://youtu.be/OOO4H3BAetU

5. ORM ?
.
, .
Thomas Samuel Kuhn

6. ORM ?
https://pixabay.com/images/id-1149841/

7. ?
Object Object
Object
Object
Object
Object
Object
Object Database

8. ?
Mapping Logic
Object Object
Object
Object
Object
Object
Object
Object Database

9. ?
Mapping Logic
Object Object
Object
Object
Object
Object
Object
Object Database
1. How?

10. Controller
Service
Entity Repository
Web
Domain
Persistence
?

11. Controller
Service
Entity Repository
Web
Domain
Persistence
API
?
2. Architecture Problem

12. Review
JPA
https://suhwan.dev/2019/02/24/jpa-vs-hibernate-vs-spring-data-jpa/

13. Review
Hibernate JPA . JPA Hibernate
DataNucleus, EclipseLink JPA JPA
https://suhwan.dev/2019/02/24/jpa-vs-hibernate-vs-spring-data-jpa/

14. Review
Hibernate JPA . JPA Hibernate
DataNucleus, EclipseLink JPA JPA
https://www.programmersought.com/article/66403889716/

15. Review
1. JPA . JPA Repository
2. Repository , Spring
Bean
https://suhwan.dev/2019/02/24/jpa-vs-hibernate-vs-spring-data-jpa/

16. Review

17. Review
https://www.tutorialspoint.com/jpa/jpa_architecture.htm

18. https://www.tutorialspoint.com/jpa/jpa_architecture.htm
Review

19. The Object Relational Impedance Mismatch
1. Granularity
2. Subtypes(Inheritance)
3. Identity
4. Association
5. Data navigation
http://hibernate.org/orm/what-is-an-orm/

20. The Object Relational Impedance Mismatch
1. Granularity
2. Subtypes(Inheritance)
3. Identity
4. Association
5. Data navigation
http://hibernate.org/orm/what-is-an-orm/

21. The Object Relational Impedance Mismatch
1. Granularity
2. Subtypes(Inheritance)
3. Identity
4. Association
5. Data navigation
http://hibernate.org/orm/what-is-an-orm/
1.
2. RDBMS .
3. ( )

22. The Object Relational Impedance Mismatch
1. Granularity
2. Subtypes(Inheritance)
3. Identity
4. Association
5. Data navigation
http://hibernate.org/orm/what-is-an-orm/
1. RDBMS Primary Key
2. Java a == b, a.equals(b)

23. The Object Relational Impedance Mismatch
1. Granularity
2. Subtypes(Inheritance)
3. Identity
4. Association
5. Data navigation
http://hibernate.org/orm/what-is-an-orm/
1. Java .
2. RDMSB

24. The Object Relational Impedance Mismatch
1. Granularity
2. Subtypes(Inheritance)
3. Identity
4. Association
5. Data navigation
http://hibernate.org/orm/what-is-an-orm/
1. Java member.getCoupon()
2. RDMSB Join

25. The Object Relational Impedance Mismatch
Subtypes(Inheritance) ‒ :
https://martinfowler.com/eaaCatalog/singleTableInheritance.html

26. The Object Relational Impedance Mismatch
Subtypes(Inheritance) ‒ :
https://martinfowler.com/eaaCatalog/concreteTableInheritance.html

27. The Object Relational Impedance Mismatch
Subtypes(Inheritance) ‒ :
https://martinfowler.com/eaaCatalog/classTableInheritance.html

28. http://blog.ant-holdings.com/2013/10/16/software-architect-courses-part-4-5/
Datasource Architecture Pattern
도메인 객체와 데이터베이스가 연결되는 방법을 결정
1. Table Gateway (Table mapping per one instance)
2. Raw Data Gateway (Record mapping per one instance)
3. Active Record (Table mapping and domain instance a class)
4. Data Mapper (OR mapping layer)

29. http://blog.ant-holdings.com/2013/10/16/software-architect-courses-part-4-5/
Datasource Architecture Pattern
도메인 객체와 데이터베이스가 연결되는 방법을 결정
1. Table Gateway (Table mapping per one instance)
2. Row Data Gateway (Record mapping per one instance)
3. Active Record (Table mapping and domain instance a class)
4. Data Mapper (OR mapping layer)

30. ActiveRecord Pattern
1.
2. Rails, Django
3. An object that wraps a row in a database table or view, encapsulates the database access,
and adds domain logic on that data.
https://martinfowler.com/eaaCatalog/activeRecord.html

31. ActiveRecord Pattern
https://velog.io/@koreanhole/Active-Record%ED%8C%A8%ED%84%B4%EA%B3%BC-Data-Mapper-%ED%8C%A8%ED%84%B4

32. DataMapper Pattern
https://martinfowler.com/eaaCatalog/dataMapper.html
1. Domain Mapper . DB Domain .
2. .
3. Hibernate
4. A layer of Mappers that moves data between objects and a database while keeping them
independent of each other and the mapper itself.

33. DataMapper Pattern

34. ActiveRecord Pattern
1. , ,
2. , .
3. , , .
, Foreign key ,
4. Active Record , CRUD
( )
5.

35. DataMapper Pattern
1. , DB ,
2. ORM , , (ex. JPA)
ORM ?
3. , .

36. Case Study
https://subscription.packtpub.com/book/programming/9781839211966/1

37. Case Study
Controller
Service
Web
Domain

38. Case Study
Controller
Service
Web
Domain
Entity Repository
Persistence

39. Case Study
Controller
Service
Web
Domain
Entity Repository
Persistence

40. Case Study
https://youtu.be/VjbBGjVRxfk

41. Case Study
https://tutorial.djangogirls.org/ko/django_start_project/

42. Case Study
https://tutorial.djangogirls.org/ko/django_start_project/

43. Case Study
Service
Controller
Service
Entity Repository
Web
Domain
Persistence
일반 주문
주문조회 API

44. Case Study
Service
Controller
Service
Entity Repository
Web
Domain
Persistence
일반 주문 선물하기
주문조회 API

45. Case Study
Service
Controller
Service
Entity Repository
Web
Domain
Persistence
일반 주문 선물하기 해외 배송
주문조회 API

46. Case Study
Service
Controller
Service
Entity Repository
Web
Domain
Persistence
일반 주문 선물하기 해외 배송
주문조회 API

47. Case Study
Controller
Service
Entity Repository
Web
Domain
Persistence
일반 주문 선물하기 해외 배송
주문조회 API

48. Case Study
Wayfarer Architecture
Controller
Service
Entity Repository
Web
Domain
Persistence
주문조회 API 1
Service
Service
Controller
Controller
주문조회 API 2

49. Case Study
(SRP )
OrderController
Entity Repository
Web
Domain
Persistence
Order API
OrderService MemberService
MemberController
Member API

50. Case Study
(SRP )
OrderController
Entity Repository
Web
Domain
Persistence
Order API
MemberController
Member API
OrderService MemberService
Entity Repository
Persistence

51. https://www.hanbit.co.kr/media/community/review_view.html?hbr_idx=8675&page=39
Software Architecture
. Self Discipline

52. Software Architecture
?

53. JPA
Covenant
Chapter 2 O/R Mapping
JPA