Clean Code

類別圖：運輸系統（工廠方法模式）

Example: 運輸系統

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
@startuml Example-Transport-Factory-Method-Pattern

interface ModelFactory
{
  + createModel(): Model
}

interface Model
{
  + getName(): string
}

ModelFactory ---> Model

class LocalTrainFactory
{
  + createModel(): Model
}

class SemiExpressFactory
{
  + createModel(): Model
}

class LimitedExpressFactory
{
  + createModel(): Model
}

class Boeing747Factory
{
  + createModel(): Model
}

ModelFactory <|.. LocalTrainFactory
ModelFactory <|.. SemiExpressFactory
ModelFactory <|.. LimitedExpressFactory
ModelFactory <|.. Boeing747Factory

class LocalTrain
{
  + getName(): string
}

class SemiExpress
{
  + getName(): string
}

class LimitedExpress
{
  + getName(): string
}

class Boeing747
{
  + getName(): string
}

Model <|.. LocalTrain
Model <|.. SemiExpress
Model <|.. LimitedExpress
Model <|.. Boeing747

class Program
{
  + getModel(string model): string
  - createModelFactory(string model): ModelFactory
}

Program --> ModelFactory

LocalTrainFactory ---> LocalTrain
SemiExpressFactory ---> SemiExpress
LimitedExpressFactory ---> LimitedExpress
Boeing747Factory ---> Boeing747

@enduml

這個圖真的很適合說明依賴反轉原則

ʕ •ᴥ•ʔ：若不熟悉 UML 類別圖，可參考UML類別圖說明。

Share