chainofresponsibility

Documentation

Overview

Chain Of Responsibility 职责链模式：

使多个对象都有机会处理请求，从而避免请求的发送者和接收者之间的耦合关系。
将这些对象连成一条链，并沿着这条链传递该请求，直到有一个对象处理它为止

个人想法：MFC的消息队列机制

Index

• type ConcreteHandlerA
  • func NewConcreteHandlerA() *ConcreteHandlerA
  • func (c *ConcreteHandlerA) HandleRequest(req int) int
• type ConcreteHandlerB
  • func NewConcreteHandlerB() *ConcreteHandlerB
  • func (c *ConcreteHandlerB) HandleRequest(req int) int
• type Handler
  • func (h *Handler) SetSuccessor(i IHandler)
• type IHandler

Types

type ConcreteHandlerA

type ConcreteHandlerA struct {
	Handler
}

具体处理结构体，这里简单处理int类型的请求，判断是否在[1-10]之间，是：处理，否：交给successor处理

func NewConcreteHandlerA

func NewConcreteHandlerA() *ConcreteHandlerA

func (*ConcreteHandlerA) HandleRequest

func (c *ConcreteHandlerA) HandleRequest(req int) int

type ConcreteHandlerB

type ConcreteHandlerB struct {
	Handler
}

具体处理结构体，这里简单处理int类型的请求，判断是否在[11-20]之间，是：处理，否：交给successor处理

func NewConcreteHandlerB

func NewConcreteHandlerB() *ConcreteHandlerB

func (*ConcreteHandlerB) HandleRequest

func (c *ConcreteHandlerB) HandleRequest(req int) int

type Handler

type Handler struct {
	// contains filtered or unexported fields
}

实现处理请求的接口的基本结构体类型

func (*Handler) SetSuccessor

func (h *Handler) SetSuccessor(i IHandler)

type IHandler

type IHandler interface {
	SetSuccessor(IHandler)
	HandleRequest(int) int
}

处理请求接口