using System;
using System.Web;

namespace SiteCore
{
    public class WebHttpHandler : IHttpHandlerFactory
    {

        #region IHttpHandlerFactory 成员

        public IHttpHandler GetHandler(HttpContext context, string requestType, string url, string pathTranslated)
        {
            int len = url.LastIndexOf("/");
            string fname = url.Substring(len + 1);
            string cname = fname.Substring(0, fname.LastIndexOf("."));
            /*
            string fname = url.Substring(url.IndexOf('/') + 1);
            while (fname.IndexOf('/') != -1)
                fname = fname.Substring(fname.IndexOf('/') + 1);
            string cname = fname.Substring(0, fname.IndexOf('.'));
             */
            string className = "SiteCore.Handler." + cname;
            object h = null;
            try
            {
                // 采用动态反射机制创建相应的IHttpHandler实现类。
                h = Activator.CreateInstance(Type.GetType(className));
            }
            catch (Exception e)
            {
                throw new HttpException("工厂不能为类型" + cname + "创建实例。", e);
            }
            return (IHttpHandler)h;
        }

        public void ReleaseHandler(IHttpHandler handler)
        {

        }

        #endregion
    }
}