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https://github.com/crazybber/go-pattern-examples.git
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101 lines
2.9 KiB
Go
101 lines
2.9 KiB
Go
package abstractfactory
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import "fmt"
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///这里一个分库分表的场景
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///主订单,放在常规MySQL数据库
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//订单详情,单条数据量过多,所以放在NewSQL数据库
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//Order : 订单主记录
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type Order interface {
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SaveOrder()
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//.....BALABALA..可以继续写很多接口方法
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//每个接口方法做一件事
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}
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//OrderDetail 订单详情
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type OrderDetail interface {
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SaveOrderDetail()
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//.....BALABALA..可以继续写很多接口方法
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//每个接口方法做一件事
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}
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//IRepository 是当抽象工厂模式例子中的关键接口
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//IRepository 返回一组数据处理对象,用于处理不同的数据类型
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//IRepository 本质是创建工作对象,但必须以接口方式返回
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type IRepository interface {
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CreateOrderWorker() Order
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CreateOrderDetailWorker() OrderDetail
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//.....BALABALA..可以继续写很多接口方法
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//每个接口方法都要返回一个接口
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}
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////////////////////////////////
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//接口定义好了,开始进行实现和应用
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////////////////////////////////
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//MySQLOrderWorker 处理主订单的worker
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type MySQLOrderWorker struct{}
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//SaveOrder 实现SaveOrder接口,保存订单
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func (*MySQLOrderWorker) SaveOrder() {
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fmt.Print("MySQL save main order\n")
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}
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//NewSQLOrderWorker 处理订单详情的worker
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type NewSQLOrderWorker struct{}
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// SaveOrderDetail SaveOrderDetail接口,保存订单细节
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func (*NewSQLOrderWorker) SaveOrderDetail() {
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fmt.Print("NewSQL save OrderDetail\n")
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}
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//SQLFactory 第一个工厂
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//SQLFactory SQL关系型数据库工厂实现DAOFactory接口
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type SQLFactory struct{}
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//CreateOrderWorker 创建实现了能够保存主订单记录的工作对象
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func (*SQLFactory) CreateOrderWorker() Order {
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return &MySQLOrderWorker{}
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}
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//CreateOrderDetailWorker 创建实现了能够保存订单详情的工作对象
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func (*SQLFactory) CreateOrderDetailWorker() OrderDetail {
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return &NewSQLOrderWorker{}
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}
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///假设说:现在CTO说要迁移到非关系数据库,我们进行下一个实现
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///主订单,放在常规MySQL数据库
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//订单详情,单条数据量过多,所以放在NewSQL数据库
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//MongoDBWorker 处理主订单
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//MongoDBWorker No-SQL非关系型数据库工厂实现DAOFactory接口
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type MongoDBWorker struct{}
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//SaveOrder by MongoDBWorker ...
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func (*MongoDBWorker) SaveOrder() {
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fmt.Print("MongoDB save main order\n")
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}
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//PouchDBWorker 处理订单细节
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type PouchDBWorker struct{}
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// SaveOrderDetail ...
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func (*PouchDBWorker) SaveOrderDetail() {
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fmt.Print("PouchDBWorker save OrderDetail\n")
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}
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//NoSQLFactory 第二个工厂,用于处理非关系型存储
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//NoSQLFactory No-SQL非关系型数据库工厂实现DAOFactory接口
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type NoSQLFactory struct{}
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//CreateOrderWorker 创建主订单工作对象
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func (*NoSQLFactory) CreateOrderWorker() Order {
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return &MongoDBWorker{}
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}
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//CreateOrderDetailWorker 创建订单详情工作对象
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func (*NoSQLFactory) CreateOrderDetailWorker() OrderDetail {
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return &PouchDBWorker{}
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}
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