Adapter Mode Adapter

Adapter mode, adjust to conform to the other interface

Class 1 Adapter pattern, subclass inherits Adaptee class

#include <IOSTREAM>using namespacestd;//Class Adapterclasstarget{ Public:    Virtual voidAction () =0;};classadaptee{ Public:    voidadapteraction () {cout<<"Hello World"<<Endl; }};classAdapter: Publictarget,adaptee{ Public:    voidaction () { This-adapteraction ();    }}; intMainintargcChar*argv[]) {Target* p =NewAdapter; P-action (); Deletep; return 0;}

2 Object Adapter pattern, the Adaptee class is present in the adapter class as an object, and the operation of Adaptee is invoked in an interface that is inherited by Target in the adapter class

//Object Adapterclasstarget{ Public:    Virtual voidAction () =0;};classadaptee{ Public:    voidadapteraction () {cout<<"Hello World"<<Endl; }};classAdapter: Publictarget{ Public:    voidaction () {p-adapteraction (); } Adapter () {p=Newadaptee; }    ~Adapter () {Deletep; }Private: Adaptee*p;}; intMainintargcChar*argv[]) {Target* p =NewAdapter; P-action (); Deletep; return 0;}

3. Default adapter mode,

We refer to this intermediate transition class as the default adaptation class, and the default adaptation mode provides a default implementation for an interface

#include <IOSTREAM>using namespacestd;//Default Adapterclasstarget{ Public:    Virtual voidAction1 () =0; Virtual voidAction2 () =0; Virtual voidAction3 () =0;};classDefaultadapter: Publictarget{ Public:    voidAction1 () {cout<<"Action1"<<Endl; }    voidAction2 () {cout<<"Action2"<<Endl; }    voidAction3 () {cout<<"Action3"<<Endl; }};classAdapter: Publicdefaultadapter{ Public:    voidAction1 () {cout<<"Only want Action1"<<Endl;    }}; intMainintargcChar*argv[]) {Target* p =NewAdapter; P-Action1 (); Deletep; return 0;}

Adapter Mode Adapter