DDD 拼圖中的另一半 – 以戰術實踐代碼
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在軟體開發過程中，時常會面臨許多複雜的需求場景，而這特別容易發生在企業的應用下。然而過往數據導向的直線式設計開發，卻容易使我們未發現、忽略建模時中所淺藏的需求複雜性，進而使得後期開發與重構難度提高。 為了解決這個現象，領域驅動設計 (DDD) 誕生了，藉由分析需求並建立領域的知識，以領域思維設計模型，使模型本身可以對焦業務並加以控制。因此 DDD 透過名為戰略建模的模式、事件風暴 (Event Storming) 來方法來實施。不過身為工程師的朋友肯定會有另一個疑問，那要實踐到開發中呢？ 為解決這個議題 DDD 透過另一半的拼圖 - 戰術建模來達成。而在這次的分享將會簡介一下 DDD 戰術建模的 10 個實踐模式，讓各位有的初步的認識。
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DDD 拼圖中的另一半 – 以戰術實踐代碼
- 2. DDD
- 3. DDD
- 4. • • • DDD
- 5. DDD
- 6. DDD DDD DDD 2003 Eric Evans Domain-Driven Design
- 11. DDD
- 12. (1) ( Domain Storytelling - ( ) Strategic Modeling
- 13. (2) Event Storming () Strategic Modeling
- 15. Tactical Modeling 1 0 69 ORM
- 18. A. ( C. B. ) Reason Tactical Modeling
- 19. A. C. B. ( ) 1. 2. (Service) Problem Reason 3. Tactical Modeling
- 20. A. C. B. ( ) 1. 2. (Service) Problem Reason 3. Tactical Modeling
- 21. Tactical Modeling • ( ) • ( )
- 23. Architecture
- 24. DDD Tactical Modeling > (Architecture) • • • • •
- 25. Tactical Modeling > (Architecture) •
- 26. Tactical Modeling > (Architecture) • •
- 27. Tactical Modeling > (Architecture) (Onion Architecture), From 2008 • ( (Hexagonal Architecture), From 2005 Clean Architecture), From 2012 • (
- 28. Value Object
- 29. (Value Object) Tactical Modeling > (Value Object) ? Domain Driven Design - Tackling Complexity in the Heart of Software, Eric Evans
- 30. (Value Object) Tactical Modeling > (Value Object)
- 31. (Describe) (Measure) Tactical Modeling > (Value Object)
- 32. (Describe) (Measure) Tactical Modeling > (Value Object)
- 33. (Conceptual Whole) • • • • • Tactical Modeling > (Value Object)
- 34. (Conceptual Whole) ) ( Tactical Modeling > (Value Object)
- 35. ) ( Tactical Modeling > (Value Object)
- 36. - QA 100 - Tactical Modeling > (Value Object)
- 37. - - - Tactical Modeling > (Value Object)
- 38. = - Tactical Modeling > (Value Object)
- 39. - = Tactical Modeling > (Value Object)
- 40. • • - Tactical Modeling > (Value Object)
- 41. - - Tactical Modeling > (Value Object)
- 42. - Tactical Modeling > (Value Object) Setter Method (immutable) only getter
- 43. Tactical Modeling > (Value Object)
- 44. Tactical Modeling > (Value Object)
- 45. ) Side-Effect Free Tactical Modeling > (Value Object) ( ) (
- 46. Side-Effect Free Tactical Modeling > (Value Object) ( ) Method
- 47. Tactical Modeling > (Value Object) • • • •
- 48. (Entity) Entity
- 49. (Entity) ? Tactical Modeling > (Entity) Domain Driven Design - Tackling Complexity in the Heart of Software, Eric Evans
- 50. ID Ticket number Tactical Modeling > (Entity)
- 51. 1 30 Tactical Modeling > (Entity)
- 52. (Entity) 1. ) ( 3. ( ( Identity 2. e.g. Tactical Modeling > (Entity)
- 56. 0 vs 1 Tactical Modeling > (Entity)
- 57. 0 vs 1 Tactical Modeling > (Entity)
- 58. ID Tactical Modeling > (Entity)
- 59. ID • Tactical Modeling > (Entity) ID(int, string …) • • • •
- 60. • getter / setter • Tactical Modeling > (Entity) •
- 61. Tactical Modeling > (Entity) Table SchemaDomain Model
- 62. (Aggregate)
- 63. (Aggregate) ? Tactical Modeling > (Aggregate) Domain Driven Design - Tackling Complexity in the Heart of Software, Eric Evans
- 64. (Aggregate) ? Tactical Modeling > (Aggregate)
- 65. Tactical Modeling > (Aggregate)
- 66. Tactical Modeling > (Aggregate)
- 67. Tactical Modeling > (Aggregate) PS:
- 68. Tactical Modeling > (Aggregate) 3 ( ) 3 . 12 Bug .
- 69. 1 Tactical Modeling > (Aggregate) 4 3 2 Bug 3 3 ) . (
- 70. Tactical Modeling > (Aggregate) OrderItem Update Update Update
- 71. Tactical Modeling > (Aggregate) Order 250 Tracy Mary
- 72. Tactical Modeling > (Aggregate)
- 73. Tactical Modeling > (Aggregate) Order 250
- 74. Tactical Modeling > (Aggregate) Order ) 250 (
- 75. (Aggregate) Tactical Modeling > (Aggregate) •
- 76. (Aggregate) Tactical Modeling > (Aggregate) • (Entity) (Value Object)
- 77. (Aggregate) Tactical Modeling > (Aggregate) •
- 78. (Aggregate) ( Tactical Modeling > (Aggregate) • Business rule ) ( • • • 0 • • • x
- 79. (Aggregate) Tactical Modeling > (Aggregate) • • (Transaction)
- 80. (Aggregate) Tactical Modeling > (Aggregate) • (Aggregate Root) •
- 81. (Aggregate) Tactical Modeling > (Aggregate) • (Entity) • • • • •
- 82. (Aggregate) Tactical Modeling > (Aggregate) • (Entity) • • • • •
- 83. (Aggregate) Tactical Modeling > (Aggregate) • •
- 84. (Aggregate) Tactical Modeling > (Aggregate) • •
- 85. (Aggregate) ) ( Tactical Modeling > (Aggregate) •
- 86. (Aggregate) Tactical Modeling > (Aggregate)
- 87. (Aggregate) Tactical Modeling > (Aggregate) ID
- 88. (Factory)
- 89. (Factory) DDD Tactical Modeling > (Factory) •
- 90. Tactical Modeling > (Factory) • Factory Method Abstract Factory Builder • • Car altis = Car.StartToManufacture() v.s Car altis = Car.Create() Client Factory Car Aggregate Root Create manufacture car
- 91. Tactical Modeling > (Factory) • • • •
- 92. Tactical Modeling > (Factory) • • • • •
- 93. (Repository)
- 94. (Repository) Tactical Modeling > (Repository) • CRUD • • • (1:1 1: N)
- 95. (Repository) Tactical Modeling > (Repository) DDD
- 96. (Repository) ? Tactical Modeling > (Repository) Domain Driven Design - Tackling Complexity in the Heart of Software, Eric Evans
- 97. DDD (Repository) Tactical Modeling > (Repository) • • • • CRUD
- 98. Tactical Modeling > (Repository) • (1:1 1: N) ? • E.g : Order, OrderItem OrderRepository OrderItemRepository • Order OrderItem • OrderItem Order • OrderItem Order
- 99. Tactical Modeling > (Repository) • • • (1:1 1: N) ? • E.g : Order, OrderItem OrderRepository OrderItemRepository • Order OrderItem • OrderItem Order • OrderItem Order
- 100. Tactical Modeling > (Repository) • client Insert Update Delete Query Client
- 101. Tactical Modeling > (Repository) • • txt •
- 102. Tactical Modeling > (Repository) • • Application Service • Session Unit Of Work Commit
- 103. (Domain Service)
- 104. Tactical Modeling > (Domain Service) • A B A Account B Account •
- 105. Tactical Modeling > (Domain Service) • A B A Account B Account N’s Order Record • .
- 106. (Domain Service) Tactical Modeling > (Domain Service) • • • • • • •
- 107. (Domain Service) Tactical Modeling > (Domain Service) • • • • • •
- 108. (Domain Service) Tactical Modeling > (Domain Service) • ( Bounded Context • )
- 110. (Application Service) Tactical Modeling > (Application Service) • Client Use Case) • • Client Input Output • • • • (
- 111. (Application Service) Tactical Modeling > (Application Service) • •
- 112. Tactical Modeling > (Application Service)
- 113. (Domain Event)
- 114. (Domain Event) Tactical Modeling > (Domain Event) Domain-Driven Design Reference - Definitions and Pattern Summaries, Eric Evans
- 115. (Domain Event) Tactical Modeling > (Domain Event) • • • Order Created • (Create Order) (Order Created)
- 116. (Domain Event) ? Tactical Modeling > (Domain Event) • • • • • •
- 117. (Domain Event) ? Tactical Modeling > (Domain Event) • • • • • • •
- 118. (Domain Event) Tactical Modeling > (Domain Event) • • •
- 119. (Domain Event) Tactical Modeling > (Domain Event) • (immutable) . • (primitive value) • metadata • ID
- 120. (Domain Event) - Tactical Modeling > (Domain Event) • •
- 121. (Module)
- 122. (Module) Tactical Modeling > (Module) •
- 123. . (Module) Tactical Modeling > (Module) • ) . . • • ) ( • . • app, controller, model, db, service
- 124. DDD (Module) Tactical Modeling > (Module) • • • (CCP) • •
- 125. DDD (Module) (1) Tactical Modeling > (Module) 1. 2. • • Bounded Context •
- 126. DDD (Module) (2) Tactical Modeling > (Module) 3. domain • models • services • repositories • factories 4. models • events • exceptions
- 127. Take Away Tactical Modeling > Take Away • DDD • DDD pattern language • • DDD •