设计模式》责任链模式

例子 责任链 教会（同工，管理员，创建者）

• 修改教会成员名称（同工）
• 去教会祷告请假（管理员）
• 教会关门，隐退（创建者）

    public abstract class AbsGuildManager
    {
        private string _name;
        protected AbsGuildManager SuperiorGuildManager { get; }


        protected AbsGuildManager(string name, AbsGuildManager superiorGuildManager)
        {
            _name = name;
            SuperiorGuildManager = superiorGuildManager;
        }

        public abstract void HandlerRequest(GuildRequest request);
    }



    public enum GuildRequestType
    {
        改名称,
        请假,
        关门
    }

    public class GuildRequest
    {
        public Guid UserId { get; }
        public GuildRequestType GuildRequestType { get; }

        public GuildRequest(GuildRequestType guildRequestType, Guid userId)
        {
            GuildRequestType = guildRequestType;
            UserId = userId;
        }
    }

    public class TongGongGuildManager : AbsGuildManager
    {
        public TongGongGuildManager(string name, AbsGuildManager superiorGuildManager) : base(name,
            superiorGuildManager)
        {
        }

        public override void HandlerRequest(GuildRequest request)
        {
            if (request.GuildRequestType == GuildRequestType.改名称)
            {
                Console.WriteLine($"同工同意：{request.UserId}修改名字成功");
            }
            else
            {
                SuperiorGuildManager?.HandlerRequest(request);
            }
        }
    }

    public class AdminGuildManager : AbsGuildManager
    {
        public AdminGuildManager(string name, AbsGuildManager superiorGuildManager) : base(name,
            superiorGuildManager)
        {
        }

        public override void HandlerRequest(GuildRequest request)
        {
            if (request.GuildRequestType == GuildRequestType.请假)
            {
                Console.WriteLine($"管理员同意：{request.UserId}请假成功");
            }
            else
            {
                SuperiorGuildManager?.HandlerRequest(request);
            }
        }
    }

    public class CreatorGuildManager : AbsGuildManager
    {
        public CreatorGuildManager(string name, AbsGuildManager superiorGuildManager) : base(name,
            superiorGuildManager)
        {
        }

        public override void HandlerRequest(GuildRequest request)
        {
            if (request.GuildRequestType == GuildRequestType.关门)
            {
                Console.WriteLine($"教会创始人同意：教会关门隐退");
            }
            else
            {
            }
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            var creator = new CreatorGuildManager("创建者", null);
            var admin = new AdminGuildManager("管理员", creator);
            var tongGong = new TongGongGuildManager("同工", admin);
            var request1 = new GuildRequest(GuildRequestType.关门,Guid.NewGuid());
            var request2 = new GuildRequest(GuildRequestType.改名称,Guid.NewGuid());
            var request3 = new GuildRequest(GuildRequestType.请假,Guid.NewGuid());
            
            tongGong.HandlerRequest(request1);
            tongGong.HandlerRequest(request2);
            tongGong.HandlerRequest(request3);
            
        }
    }

参考地址