原创 | 使用 JPA 实现 DDD 持久化 - 领域模型：对象的世界

@startuml
package commons <<Frame>> {  
  class Address <<ValueObject>> {
    - province: String
    - city: String
    - detail: String
    - receiver: String
    - receiverPhone: String
  }
}
package products <<Frame>> {
  class Product <<Entity>> {
    - name: String
  }
  class ProductCategory <<Entity>> {
    - name: String
  }
  Product --> "category" ProductCategory
  ProductCategory "parent" -- "children*" ProductCategory
}
package buyers <<Frame>> {
  abstract class Buyer <<Entity>> {
    - name: String
    - mobileNo: String
    - wiredNo: String
    - email: String
  }
  class OrgBuyer <<Entity>> {
    - businessLicenseNo: String
    - taxNo: String
  }
  class ContactInfo <<ValueObject>> {
    - name: String
    - gender: Gender
    - mobileNo: String
    - email: String
  }
  class PersonalBuyer <<Entity>> {
    - gender: Gender
    - imInfos: Map
  }
  Buyer <|- OrgBuyer
  Buyer <|- PersonalBuyer
  Buyer *--> "shippingAddresses*" Address
  OrgBuyer *--> ContactInfo
}
package pricing <<Frame>> {
  class Pricing <<Entity>> {
    - unitPrice: Money
    - pricingTime: LocalDateTime
  }
  interface Pricings <<repository>> {
    + save(pricing): Pricing
    + getPricingAt(product, time): Pricing
  }
  class PricingService <<service>> {
    + setUnitPrice(setUnitPrice, unitPrice, effectiveTime)
    + adjustPriceByPercentage(product, percentage, effectiveTime)
    + getPriceAt(product, time): Money
  }
    Pricing --> Product
    Pricings --> Product
    Pricings --> Pricing
    PricingService --> Pricings
}
package sales <<Frame>> {
  class Order <<Entity>> {
    - orderNo:String
    - createdOn: LocalDateTime
    - totalPrice: Money
    - status: OrderStatus
    + calculateTotalPrice()
  }
  class OrderLine <<Entity>> {
    - quantity: BigDecimal
    - unitPrice: Money
    - discountRate: BigDecimal
    - subTotal: Money
    + calculateSubTotal()
  }
  class OrderStatusTransition <<Entity>> {
    - status: OrderStatus
    - seqNo: int
    - created: LocalDateTime
  }
  Order --> Buyer
  Order *--> "shippingAddress" Address
  Order *-- "lineItems*" OrderLine
  OrderLine --> Product
  OrderStatusTransition --> Order
}
@enduml