public void Test()
{
// 生成操作对象实例、组装链式结构
IHandler handler1 = new InternalHandler();
IHandler handler2 = new DiscountHandler();
IHandler handler3 = new MailHandler();
IHandler handler4 = new RegularHandler();
handler1.Successors = new List <IHandler> {
handler3
};
handler3.Successors = new List <IHandler> {
handler2
};
handler2.Successors = new List <IHandler> {
handler4
};
IHandler head = handler1;
handler1.HasBreakPoint = true;
handler1.Break += Break;
handler3.HasBreakPoint = true;
handler3.Break += Break;
Request request = new Request(20, PurchaseType.Regular);
head.Handle(request);
Console.WriteLine(currentType.ToString());
currentType = PurchaseType.Internal; // 为第一个断点做的准备
Console.WriteLine(request.Price);
Console.WriteLine(currentType.ToString());
}
public static void ClassicTest()
{
// 生成操作对象实例
var handler1 = new InternalHandler();
var handler2 = new DiscountHandler();
var handler3 = new MailHandler();
var handler4 = new RegularHandler();
// 组装链式的结构 internal-> mail-> discount-> regular-> null
handler1.Successors = new List <IHandler> {
handler3
};
handler3.Successors = new List <IHandler> {
handler2
};
handler2.Successors = new List <IHandler> {
handler4
};
var head = handler1;
Request request = new Request(20, PurchaseType.Mail);
head.Handle(request);
Console.WriteLine(request.Price);
}