PetShop典型的分层、接口和工厂的写法
文章来源：365jz.com 点击数：530 更新时间：2009-09-24 22:38 参与评论
微软宠物店的分析
//---------页面表现层Web----------------------
Product product = new Product();
IList productsByCategory = product.GetProductsByCategory
((string)ViewState[KEY_CATEGORY]);
//----------商业逻辑层---------------------
namespace PetShop.BLL
public class Product {
IProduct dal = PetShop.DALFactory.Product.Create();
return dal.GetProductsBySearch(keywords);
}
//---------接口层--------------------------
namespace PetShop.IDAL{
public interface IProduct{
IList GetProductsByCategory(string category);
}
}
//------------数据访问层--------------------
public class Product : IProduct{
public IList GetProductsByCategory(string category) {
}
}
//----------静态工厂方法--------------------
namespace PetShop.DALFactory {
public class Product {
public static PetShop.IDAL.IProduct Create() {
string path =
System.Configuration.ConfigurationSettings.AppSettings
["WebDAL"];
string className = path + ".Product";
return (PetShop.IDAL.IProduct)Assembly.Load
(path).CreateInstance(className);
}
}
}
//---------页面表现层Web----------------------Product product = new Product();IList productsByCategory = product.GetProductsByCategory((string)ViewState[KEY_CATEGORY]);//----------商业逻辑层---------------------namespace PetShop.BLLpublic class Product {
IProduct dal = PetShop.DALFactory.Product.Create(); return dal.GetProductsBySearch(keywords);}//---------接口层--------------------------namespace PetShop.IDAL{public interface IProduct{
IList GetProductsByCategory(string category); }}//------------数据访问层--------------------public class Product : IProduct{public IList GetProductsByCategory(string category) {}}//----------静态工厂方法--------------------namespace PetShop.DALFactory {public class Product {public static PetShop.IDAL.IProduct Create() {string path = System.Configuration.ConfigurationSettings.AppSettings["WebDAL"];string className = path + ".Product";return (PetShop.IDAL.IProduct)Assembly.Load(path).CreateInstance(className); } }}Tag标签: ASP.NET,petshop,工厂模式,三层,mvc,接口
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