Order model

Seven classes of a shop: attributes and methods in their own compartments, an interface and an enumeration with their stereotypes, a composition with a filled diamond, a realization with a hollow triangle, dependencies dashed, and cardinalities at the ends. chartlet lays it out; the description and the table give every class with its members and relations.

Order model

examples/order-model.json

{
  "schemaVersion": 1,
  "type": "classes",
  "title": "Order model",
  "source": "Illustrative domain model",
  "width": 900,
  "height": 720,
  "classes": {
    "classes": [
      {
        "id": "customer",
        "label": "Customer",
        "attributes": [
          "+ id: Int",
          "+ name: String",
          "+ email: String"
        ],
        "methods": [
          "+ placeOrder(): Order"
        ]
      },
      {
        "id": "order",
        "label": "Order",
        "attributes": [
          "+ id: Int",
          "+ placedAt: Date",
          "+ status: Status"
        ],
        "methods": [
          "+ total(): Money",
          "+ cancel()"
        ]
      },
      {
        "id": "line",
        "label": "OrderLine",
        "attributes": [
          "+ quantity: Int",
          "+ price: Money"
        ]
      },
      {
        "id": "product",
        "label": "Product",
        "attributes": [
          "+ sku: String",
          "+ name: String",
          "+ price: Money"
        ]
      },
      {
        "id": "payment",
        "label": "Payment",
        "kind": "interface",
        "methods": [
          "+ charge(amount: Money): Receipt"
        ]
      },
      {
        "id": "card",
        "label": "CardPayment",
        "attributes": [
          "- number: String"
        ],
        "methods": [
          "+ charge(amount: Money): Receipt"
        ]
      },
      {
        "id": "status",
        "label": "Status",
        "kind": "enum",
        "attributes": [
          "PLACED",
          "PAID",
          "SHIPPED",
          "CANCELLED"
        ]
      }
    ],
    "relations": [
      {
        "from": "customer",
        "to": "order",
        "fromCardinality": "1",
        "toCardinality": "0..*",
        "label": "places"
      },
      {
        "from": "order",
        "to": "line",
        "kind": "composition",
        "fromCardinality": "1",
        "toCardinality": "1..*"
      },
      {
        "from": "line",
        "to": "product",
        "fromCardinality": "*",
        "toCardinality": "1"
      },
      {
        "from": "card",
        "to": "payment",
        "kind": "realization"
      },
      {
        "from": "order",
        "to": "payment",
        "kind": "dependency",
        "label": "paid by"
      },
      {
        "from": "order",
        "to": "status",
        "kind": "dependency"
      }
    ]
  }
}

Focus

Show all Customer Order OrderLine Product Payment CardPayment Status

Order model

Source: Illustrative domain model

Show chart data

Data for Order model
Item	Kind	Attributes	Methods	Relations
Customer	Class	+ id: Int; + name: String; + email: String	+ placeOrder(): Order	is associated with Order (1 : 0..*) [places]
Order	Class	+ id: Int; + placedAt: Date; + status: Status	+ total(): Money; + cancel()	is composed of OrderLine (1 : 1..*); depends on Payment [paid by]; depends on Status
OrderLine	Class	+ quantity: Int; + price: Money		is associated with Product (* : 1)
Product	Class	+ sku: String; + name: String; + price: Money
Payment	Interface		+ charge(amount: Money): Receipt
CardPayment	Class	- number: String	+ charge(amount: Money): Receipt	implements Payment
Status	Enumeration	PLACED; PAID; SHIPPED; CANCELLED

Class diagram
Document a domain model