DDD理论的核心

失血

package main

type User struct {
    name string
    age  int
}

func (u *User) GetName() string {
    return u.name
}

func (u *User) SetName(name string) {
    u.name = name
}

func (u *User) GetAge() int {
    return u.age
}

func (u *User) SetAge(age int) {
    u.age = age
}

func main() {
    user := &User{}
    user.SetName("Alice")
    user.SetAge(30)
}

贫血

package main

type User struct {
    name string
    age  int
}

func (u *User) GetName() string {
    return u.name
}

func (u *User) SetName(name string) {
    u.name = name
}

func (u *User) GetAge() int {
    return u.age
}

func (u *User) SetAge(age int) {
    u.age = age
}

func (u *User) IncrementAge() {
    u.age++
}

func main() {
    user := &User{}
    user.SetName("Alice")
    user.SetAge(30)
    user.IncrementAge()
}

充血

package main

type User struct {
    name string
    age  int
}

func (u *User) GetName() string {
    return u.name
}

func (u *User) SetName(name string) {
    u.name = name
}

func (u *User) GetAge() int {
    return u.age
}

func (u *User) SetAge(age int) {
    u.age = age
}

func (u *User) IncrementAge() {
    u.age++
}

func (u *User) IsAdult() bool {
    return u.age >= 18
}

func main() {
    user := &User{}
    user.SetName("Alice")
    user.SetAge(30)
    user.IncrementAge()
    isAdult := user.IsAdult()
    fmt.Println("Is adult:", isAdult)
}

胀血

package main

import (
    "fmt"
)

type User struct {
    name string
    age  int
}

func (u *User) GetName() string {
    return u.name
}

func (u *User) SetName(name string) {
    u.name = name
}

func (u *User) GetAge() int {
    return u.age
}

func (u *User) SetAge(age int) {
    u.age = age
}

func (u *User) IncrementAge() {
    u.age++
}

func (u *User) IsAdult() bool {
    return u.age >= 18
}

func (u *User) Save() {
    // 持久化逻辑，例如保存到数据库
    fmt.Printf("Saving user: %s, age: %d\n", u.name, u.age)
}

func main() {
    user := &User{}
    user.SetName("Alice")
    user.SetAge(30)
    user.IncrementAge()
    isAdult := user.IsAdult()
    fmt.Println("Is adult:", isAdult)
    user.Save()
}