public virtual void HandleRequest(string input)
{
if (Next != null)
{
Next.HandleRequest(input);
}
}
protected void ForwardRequest(Request request)
{
Console.WriteLine("Forwarding request");
if (successor != null)
{
successor.HandleRequest(request);
}
}
static void Main(string[] args)
{
Handler h = InitializeHandler();
foreach (var i in new int[] { 3, 4, 6, 11, 12 })
{
h.HandleRequest(i);
}
Console.ReadKey();
}
public virtual void HandleRequest(int request)
{
if (request >= this.from && request < this.to)
{
Console.WriteLine("{0} handled request for {1}", this.GetType().Name, request);
}
else if (successor != null)
{
successor.HandleRequest(request);
}
else
{
Console.WriteLine("Request for {0} can not be handled", request);
}
}
public string HandleRequest(int data)
{
if (data < this.Limit)
{
return("Request for " + data + " handled at level " + id);
}
else if (next != null)
{
return(next.HandleRequest(data));
}
else
{
return("Request for " + data + " handled BY DEFAULT at level " + id);
}
}
static void Main(string[] args)
{
Handler start = null;
for (int i = 5; i > 0; i--)
{
Console.WriteLine("Handler " + i + " deals up to a limit of " + i * 1000);
start = new Handler(i, start);
}
int[] a = { 50, 2000, 1500, 10000, 175, 4500 };
foreach (int i in a)
{
Console.WriteLine(start.HandleRequest(i));
}
Console.ReadLine();
}
//定义一个模板方法，确定责任传递规则，约定一个条件，满足条件时自己处理，否则交给后继者处理。
public void HandleRequest(int needLevel)
{
if (level >= needLevel) //处理者等级大于等于请求要求的等级时，才可处理
{
this.HandleImp();
}
else
{
if (successor != null)
{
//交给后继者处理。
successor.HandleRequest(needLevel);
}
else
{
//注意，这里要处理好，无后继者时的情况。
//如，只好勉强自己处理。
this.HandleImp();
}
}
}
public void HandleRequest(Request request)
{
RequestChain.HandleRequest(request);
}