www.pudn.com > Mydesign.rar > Handle.cpp

//Handle.cpp 
#include "Handle.h" 
#include  
using namespace std; 
 
Handle::Handle()  
{  
	_succ = 0;  
} 
 
Handle::~Handle()  
{  
	delete _succ; 
} 
 
Handle::Handle(Handle* succ)  
{  
	this->_succ = succ;  
} 
 
void Handle::SetSuccessor(Handle* succ)  
{  
	_succ = succ;  
} 
 
Handle* Handle::GetSuccessor()  
{  
	return _succ;  
} 
 
void Handle::HandleRequest()  
{ 
} 
 
ConcreteHandleA::ConcreteHandleA()  
{ 
} 
 
ConcreteHandleA::ConcreteHandleA(Handle* succ):Handle(succ)  
{ 
 
} 
 
ConcreteHandleA::~ConcreteHandleA()  
{ 
} 
 
void ConcreteHandleA::HandleRequest()  
{  
	if (this->GetSuccessor() != 0)  
	{  
		cout<<"ConcreteHandleA 我把处理权给后继节点....." 
			<GetSuccessor()->HandleRequest();  
	} 
	else  
	{  
		cout<<"ConcreteHandleA 没有后继了，我必须自己处理...." 
			<GetSuccessor() != 0)  
	{  
		cout<<"ConcreteHandleB 我把处理权给后继节点....." 
			<GetSuccessor()->HandleRequest();  
	}  
	else  
	{  
		cout<<"ConcreteHandleB 没有后继了，我必须自己处理...." 
			<