go: Builder Pattern

geovindu

发布于 2026-06-18 19:21:02

1750

项目结构：

/*
# 版权所有  2026 ©涂聚文有限公司™ ®
# 许可信息查看：言語成了邀功盡責的功臣，還需要行爲每日來值班嗎
# 描述：   Builder Pattern
# Author    : geovindu,Geovin Du 涂聚文.
# IDE       : goLang 2024.3.6 go 26.2
# os        : windows 10
# database  : mysql 9.0 sql server 2019, postgreSQL 17.0  Oracle 21c Neo4j
# Datetime  : 2026/4/18 6:19
# User      :  geovindu
# Product   : GoLand
# Project   : godesginpattern
# File      : jewelry.go
*/
package product
 
import "fmt"
 
// Jewelry 成品珠宝（复杂产品对象）
type Jewelry struct {
    Name       string // 珠宝名称
    Material   string // 材质
    Gem        string // 宝石
    InlayCraft string // 镶嵌工艺
    Engraving  string // 刻字
    QualityOK  bool   // 质检
}
 
// ShowInfo 展示成品信息
func (j *Jewelry) ShowInfo() {
    fmt.Printf("🎁 成品珠宝：%s\n", j.Name)
    fmt.Printf("├─ 材质：%s\n", j.Material)
    fmt.Printf("├─ 宝石：%s\n", j.Gem)
    fmt.Printf("├─ 镶嵌工艺：%s\n", j.InlayCraft)
    fmt.Printf("├─ 刻字：%s\n", j.Engraving)
    fmt.Printf("└─ 质检：%s\n", map[bool]string{true: "合格", false: "不合格"}[j.QualityOK])
    fmt.Println("----------------------------------------")
}

/*
# 版权所有  2026 ©涂聚文有限公司™ ®
# 许可信息查看：言語成了邀功盡責的功臣，還需要行爲每日來值班嗎
# 描述：Builder Pattern
# Author    : geovindu,Geovin Du 涂聚文.
# IDE       : goLang 2024.3.6 go 26.2
# os        : windows 10
# database  : mysql 9.0 sql server 2019, postgreSQL 17.0  Oracle 21c Neo4j
# Datetime  : 2026/4/18 6:19
# User      :  geovindu
# Product   : GoLand
# Project   : godesginpattern
# File      : builder.go
*/
package builder
 
import "godesginpattern/Builder/product"
 
// JewelryBuilder 抽象建造者：定义固定制作步骤
type JewelryBuilder interface {
    SetName() JewelryBuilder
    SelectMaterial() JewelryBuilder
    SelectGem() JewelryBuilder
    ChooseInlay() JewelryBuilder
    DoEngraving() JewelryBuilder
    CheckQuality() JewelryBuilder
    Build() *product.Jewelry
}
 
 
 
 
/*
# 版权所有  2026 ©涂聚文有限公司™ ®
# 许可信息查看：言語成了邀功盡責的功臣，還需要行爲每日來值班嗎
# 描述：Builder Pattern
# Author    : geovindu,Geovin Du 涂聚文.
# IDE       : goLang 2024.3.6 go 26.2
# os        : windows 10
# database  : mysql 9.0 sql server 2019, postgreSQL 17.0  Oracle 21c Neo4j
# Datetime  : 2026/4/18 6:19
# User      :  geovindu
# Product   : GoLand
# Project   : godesginpattern
# File      : ring_builder.go
*/
package builder
 
import "godesginpattern/Builder/product"
 
// DiamondRingBuilder 具体建造者：定制钻戒
type DiamondRingBuilder struct {
    jewelry *product.Jewelry
}
 
func NewDiamondRingBuilder() *DiamondRingBuilder {
    return &DiamondRingBuilder{jewelry: &product.Jewelry{}}
}
 
func (b *DiamondRingBuilder) SetName() JewelryBuilder {
    b.jewelry.Name = "钻戒"
    return b
}
 
func (b *DiamondRingBuilder) SelectMaterial() JewelryBuilder {
    b.jewelry.Material = "铂金"
    return b
}
 
func (b *DiamondRingBuilder) SelectGem() JewelryBuilder {
    b.jewelry.Gem = "钻石"
    return b
}
 
func (b *DiamondRingBuilder) ChooseInlay() JewelryBuilder {
    b.jewelry.InlayCraft = "爪镶"
    return b
}
 
func (b *DiamondRingBuilder) DoEngraving() JewelryBuilder {
    b.jewelry.Engraving = "Forever Love"
    return b
}
 
func (b *DiamondRingBuilder) CheckQuality() JewelryBuilder {
    b.jewelry.QualityOK = true
    return b
}
 
func (b *DiamondRingBuilder) Build() *product.Jewelry {
    return b.jewelry
}
 
 
 
/*
# 版权所有  2026 ©涂聚文有限公司™ ®
# 许可信息查看：言語成了邀功盡責的功臣，還需要行爲每日來值班嗎
# 描述：Builder Pattern
# Author    : geovindu,Geovin Du 涂聚文.
# IDE       : goLang 2024.3.6 go 26.2
# os        : windows 10
# database  : mysql 9.0 sql server 2019, postgreSQL 17.0  Oracle 21c Neo4j
# Datetime  : 2026/4/18 6:19
# User      :  geovindu
# Product   : GoLand
# Project   : godesginpattern
# File      : necklace_builder.go
*/
package builder
 
import "godesginpattern/Builder/product"
 
// RubyNecklaceBuilder 具体建造者：定制红宝石项链
type RubyNecklaceBuilder struct {
    jewelry *product.Jewelry
}
 
func NewRubyNecklaceBuilder() *RubyNecklaceBuilder {
    return &RubyNecklaceBuilder{jewelry: &product.Jewelry{}}
}
 
func (b *RubyNecklaceBuilder) SetName() JewelryBuilder {
    b.jewelry.Name = "红宝石项链"
    return b
}
 
func (b *RubyNecklaceBuilder) SelectMaterial() JewelryBuilder {
    b.jewelry.Material = "黄金"
    return b
}
 
func (b *RubyNecklaceBuilder) SelectGem() JewelryBuilder {
    b.jewelry.Gem = "红宝石"
    return b
}
 
func (b *RubyNecklaceBuilder) ChooseInlay() JewelryBuilder {
    b.jewelry.InlayCraft = "包镶"
    return b
}
 
func (b *RubyNecklaceBuilder) DoEngraving() JewelryBuilder {
    b.jewelry.Engraving = "平安喜乐"
    return b
}
 
func (b *RubyNecklaceBuilder) CheckQuality() JewelryBuilder {
    b.jewelry.QualityOK = true
    return b
}
 
func (b *RubyNecklaceBuilder) Build() *product.Jewelry {
    return b.jewelry
}

/*
# 版权所有  2026 ©涂聚文有限公司™ ®
# 许可信息查看：言語成了邀功盡責的功臣，還需要行爲每日來值班嗎
# 描述：Builder Pattern
# Author    : geovindu,Geovin Du 涂聚文.
# IDE       : goLang 2024.3.6 go 26.2
# os        : windows 10
# database  : mysql 9.0 sql server 2019, postgreSQL 17.0  Oracle 21c Neo4j
# Datetime  : 2026/4/18 6:20
# User      :  geovindu
# Product   : GoLand
# Project   : godesginpattern
# File      : director.go
*/
package director
 
import (
    "godesginpattern/Builder/builder"
    "godesginpattern/Builder/product"
)
 
// Director 指挥者：统一控制珠宝制作步骤
type Director struct {
    builder builder.JewelryBuilder
}
 
func NewDirector(b builder.JewelryBuilder) *Director {
    return &Director{builder: b}
}
 
// MakeJewelry 固定制作流程（步骤不可乱）
func (d *Director) MakeJewelry() *product.Jewelry {
    return d.builder.
        SetName().
        SelectMaterial().
        SelectGem().
        ChooseInlay().
        DoEngraving().
        CheckQuality().
        Build()
}

调用：

/*
# 版权所有  2026 ©涂聚文有限公司™ ®
# 许可信息查看：言語成了邀功盡責的功臣，還需要行爲每日來值班嗎
# 描述：Builder Pattern
# Author    : geovindu,Geovin Du 涂聚文.
# IDE       : goLang 2024.3.6 go 26.2
# os        : windows 10
# database  : mysql 9.0 sql server 2019, postgreSQL 17.0  Oracle 21c Neo4j
# Datetime  : 2026/4/18 6:23
# User      :  geovindu
# Product   : GoLand
# Project   : godesginpattern
# File      : builderbll.go
*/
package bll
 
import (
    "godesginpattern/Builder/builder"
    "godesginpattern/Builder/director"
)
 
// 示例
func BuilderMain() {
    // 1. 制作钻戒
    ringBuilder := builder.NewDiamondRingBuilder()
    director.NewDirector(ringBuilder).MakeJewelry().ShowInfo()
 
    // 2. 制作红宝石项链
    necklaceBuilder := builder.NewRubyNecklaceBuilder()
    director.NewDirector(necklaceBuilder).MakeJewelry().ShowInfo()
}

输出：