Pet Shop 4.0 详细解析(转)
2009-11-02 11:22
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功能需求:
(1) 用户帐号的管理功能：包括帐号创建，帐号登录，帐号维护；
(2) 产品浏览功能：类别浏览，具体产品浏览，详细信息，库存信息等等；
(3) 用户购物功能：添加购物，计算总价，下订单等等。
项目列表:
序号 项目名称 描述
---------------------------------------------------------------------------------------------
1 WEB 表示层
2 Model 业务实体
3 BLL 业务逻辑层
4 DALFactory --- -------- 数据层的抽象工厂
5 IDAL 数据访问层接口定义
6 SQLServerDAL SQLServer数据访问层
7 OracleDAL Oracle数据访问层
8 DBUtility 数据库访问组件基础类
---------------------------------------------------------------------------------------------
9 CacheDependencyFactory -------- 缓存依赖类的工厂类
10 ICacheDependency 缓存依赖类接口
11 TableCacheDependency 缓存依赖实现类
---------------------------------------------------------------------------------------------
12 IBLLStrategy 同步/异步处理策略接口(实现在bll根据配置反射选择)
13 MessagingFactory ---------- 异时处理消息队列的抽象工厂
14 IMessaging 异时处理消息队列接口定义
15 MSMQMessaging 异时处理消息队列的实现
---------------------------------------------------------------------------------------------
16 Profile Profile的数据访问层
17 ProfileDALFactory --------- ProfileDAL的工厂类(反射创建ProfileDAL)
18 IProfileDAL Profile的数据访问层接口定义
19 OracleProfileDAL Oracle的Profile Providers 做用户状态管理
20 SQLProfileDAL SQL Server 的Profile Providers 做用户状态管理
----------------------------------------------------------------------------------------------
21 Membership Membership认证和授权管理
----------------------------------------------------------------------------------------------
22 OrderProcessor 后台处理进程，处理订单队列
数据库 ---表名
MSPetShop4
dbo.AspNet_SqlCacheTablesForChangeNotification
dbo.Category 宠物的类别目录表
dbo.Inventory 宠物产品的存货信息
dbo.Item 单个产品的详细信息
dbo.Product 宠物的产品列表，一条Product可能包括多个Item
dbo.Supplier 供应商信息
MSPetShop4Orders
dbo.LineItem 订单的每一项的详细信息，包括产品名称和数量，价格等
dbo.Orders 用户购物的订单，一个订单可以包括多项LineItem
dbo.OrderStatus 订单的状态
MSPetShop4Profile
dbo.Account 基本用户信息
dbo.Cart 购物车
dbo.Profiles 用户配置表，用于记录他们的favorites
MSPetShop4Services
dbo.aspnet_Membership
dbo.aspnet_Paths
dbo.aspnet_PersonalizationAllUsers
dbo.aspnet_PersonalizationPerUser
dbo.aspnet_Profile
dbo.aspnet_Roles
dbo.aspnet_SchemaVersions
dbo.aspnet_Users
dbo.aspnet_UsersInRoles
dbo.aspnet_WebEvent_Events
存储过程一大堆的 .都在 MSPetShop4Services 里面,安装之后.你自己看吧...
看下面之前 最好先把页面运行一遍,看看具体的流程..
------------------------------------------------------------------------------------------------------
现在就一个 起始页面的 目录绑定介绍第一部分//// 按照这个框架自己先做一个小例子吧...
★ WEB 表示层
private void BindCategories() {
Category category = new Category();
repCategories.DataSource = category.GetCategories(); // 将 IList<CategoryInfo> 作为数据源
repCategories.DataBind();
★ BLL 业务逻辑层
namespace PetShop.BLL {
public class Category {
private static readonly ICategory dal = PetShop.DALFactory.DataAccess.CreateCategory();
public IList<CategoryInfo> GetCategories() {
return dal.GetCategories();
}
}
}
★ DALFactory 数据层的抽象工厂
namespace PetShop.DALFactory {
public sealed class DataAccess {
private static readonly string path = "PetShop.SQLServerDAL";
private DataAccess() { }
public static PetShop.IDAL.ICategory CreateCategory() {
string className = path + ".Category";
return (PetShop.IDAL.ICategory)Assembly.Load(path).CreateInstance(className); ------这几个方法原来没有接触过...
说明 : 通过 SQLServer数据访问层 和 数据库访问组件基础类 已经从数据库中得到了数据.此时表示层直接调用 SQLServerDAL 就可以了.
但是 却没有这么做..而是通过 BLL---->.DALFactory----> 才将数据引用进来.
}
}
}
★ IDAL 数据访问层接口定义
namespace PetShop.IDAL{
public interface ICategory {
IList<CategoryInfo> GetCategories();
}
}
★ Model 业务实体
namespace PetShop.Model {
[Serializable]
public class CategoryInfo {
private string id;
private string name;
private string description;
public CategoryInfo() { }
public CategoryInfo(string id, string name, string description) {
this.id = id;
this.name = name;
this.description = description;
}
public string Id {
get { return id; }
}
public string Name {
get { return name; }
}
public string Description {
get { return description; }
}
}
}
★ SQLServerDAL SQLServer数据访问层
namespace PetShop.SQLServerDAL {
public class Category : ICategory {
private const string SQL_SELECT_CATEGORIES = "SELECT CategoryId, Name, Descn FROM Category";
public IList<CategoryInfo> GetCategories() {
IList<CategoryInfo> categories = new List<CategoryInfo>();
using(SqlDataReader rdr = SqlHelper.ExecuteReader(SqlHelper.ConnectionStringLocalTransaction, CommandType.Text, SQL_SELECT_CATEGORIES, null)) {
while (rdr.Read()) {
CategoryInfo cat = new CategoryInfo(rdr.GetString(0), rdr.GetString(1), rdr.GetString(2));
categories.Add(cat);
}
}
return categories;
}
}
}
★ DBUtility 数据库访问组件基础类
namespace PetShop.DBUtility {
public abstract class SqlHelper {
public static readonly string ConnectionStringLocalTransaction ="Server=.;Database=master;uid=sa;pwd=sa";
public static SqlDataReader ExecuteReader(string connectionString, CommandType cmdType, string cmdText, params SqlParameter[] commandParameters) {
SqlCommand cmd = new SqlCommand();
SqlConnection conn = new SqlConnection(connectionString);
try {
PrepareCommand(cmd, conn, null, cmdType, cmdText, commandParameters);
SqlDataReader rdr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
cmd.Parameters.Clear();
return rdr;
}
catch {
conn.Close();
throw;
}
}
private static void PrepareCommand(SqlCommand cmd, SqlConnection conn, SqlTransaction trans, CommandType cmdType, string cmdText, SqlParameter[] cmdParms) {
if (conn.State != ConnectionState.Open)
conn.Open();
cmd.Connection = conn;
cmd.CommandText = cmdText;
if (trans != null)
cmd.Transaction = trans;
cmd.CommandType = cmdType;
if (cmdParms != null) {
foreach (SqlParameter parm in cmdParms)
cmd.Parameters.Add(parm);
}
}
}
}
--------------以下 就一个起始页面的缓存进行说明---------------
this.CachePolicy.Dependency = DependencyFacade.GetItemDependency(); // 过一会 就写一个 100W 的数据试一下.
让我 再来看一下关于缓存的类库
9 CacheDependencyFactory -------- 缓存依赖类的工厂类
10 ICacheDependency 缓存依赖类接口
11 TableCacheDependency 缓存依赖实现类
页面直接调用了 缓存依赖类的工厂类
public static class DependencyFacade {
private static readonly string path ="PetShop.TableCacheDependency";
public static AggregateCacheDependency GetItemDependency() {
if (!string.IsNullOrEmpty(path))
return DependencyAccess.CreateItemDependency().GetDependency();
else
return null;
}
}
----------------------缓存依赖类的工厂类
public static class DependencyAccess {
public static IPetShopCacheDependency CreateItemDependency() {
return LoadInstance("Item");
}
private static IPetShopCacheDependency LoadInstance(string className) {
string path = "PetShop.TableCacheDependency";
string fullyQualifiedClass = path + "." + className;
return (IPetShopCacheDependency)Assembly.Load(path).CreateInstance(fullyQualifiedClass);---又碰到前面遇到的了
}
}
--------------------------缓存依赖类接口
namespace PetShop.ICacheDependency {
public interface IPetShopCacheDependency {
AggregateCacheDependency GetDependency();
AggregateCacheDependency: 关键字解释:组合ASP.NET 应用程序的.System.Web.Caching.cache 对象中存储的项和 System.Web.Caching.cacheDependency 对象数组之间的多个依赖项.无法继承此类..
}
}
--------------------------缓存依赖实现类 -----还是和数据访问层那样.此时的工作已经完成. 等待工厂来引用
public class Item : TableDependency {
public Item() : base("ItemTableDependency") { }
}
}
public abstract class TableDependency : PetShop.ICacheDependency.IPetShopCacheDependency {
protected char[] configurationSeparator = new char[] { ',' };
protected AggregateCacheDependency dependency = new AggregateCacheDependency();
protected TableDependency(string configKey) {
string dbName ="MSPetShop4";
<add key="CategoryTableDependency" value="Category"/>
<add key="ProductTableDependency" value="Product,Category"/>
<add key="ItemTableDependency" value="Product,Category,Item"/>
string tableConfig = ConfigurationManager.AppSettings[configKey];
string[] tables = tableConfig.Split(configurationSeparator);
foreach (string tableName in tables)
dependency.Add(new SqlCacheDependency(dbName, tableName));
}
public AggregateCacheDependency GetDependency() {
return dependency;
}
}
(1) 用户帐号的管理功能：包括帐号创建，帐号登录，帐号维护；
(2) 产品浏览功能：类别浏览，具体产品浏览，详细信息，库存信息等等；
(3) 用户购物功能：添加购物，计算总价，下订单等等。
项目列表:
序号 项目名称 描述
---------------------------------------------------------------------------------------------
1 WEB 表示层
2 Model 业务实体
3 BLL 业务逻辑层
4 DALFactory --- -------- 数据层的抽象工厂
5 IDAL 数据访问层接口定义
6 SQLServerDAL SQLServer数据访问层
7 OracleDAL Oracle数据访问层
8 DBUtility 数据库访问组件基础类
---------------------------------------------------------------------------------------------
9 CacheDependencyFactory -------- 缓存依赖类的工厂类
10 ICacheDependency 缓存依赖类接口
11 TableCacheDependency 缓存依赖实现类
---------------------------------------------------------------------------------------------
12 IBLLStrategy 同步/异步处理策略接口(实现在bll根据配置反射选择)
13 MessagingFactory ---------- 异时处理消息队列的抽象工厂
14 IMessaging 异时处理消息队列接口定义
15 MSMQMessaging 异时处理消息队列的实现
---------------------------------------------------------------------------------------------
16 Profile Profile的数据访问层
17 ProfileDALFactory --------- ProfileDAL的工厂类(反射创建ProfileDAL)
18 IProfileDAL Profile的数据访问层接口定义
19 OracleProfileDAL Oracle的Profile Providers 做用户状态管理
20 SQLProfileDAL SQL Server 的Profile Providers 做用户状态管理
----------------------------------------------------------------------------------------------
21 Membership Membership认证和授权管理
----------------------------------------------------------------------------------------------
22 OrderProcessor 后台处理进程，处理订单队列
数据库 ---表名
MSPetShop4
dbo.AspNet_SqlCacheTablesForChangeNotification
dbo.Category 宠物的类别目录表
dbo.Inventory 宠物产品的存货信息
dbo.Item 单个产品的详细信息
dbo.Product 宠物的产品列表，一条Product可能包括多个Item
dbo.Supplier 供应商信息
MSPetShop4Orders
dbo.LineItem 订单的每一项的详细信息，包括产品名称和数量，价格等
dbo.Orders 用户购物的订单，一个订单可以包括多项LineItem
dbo.OrderStatus 订单的状态
MSPetShop4Profile
dbo.Account 基本用户信息
dbo.Cart 购物车
dbo.Profiles 用户配置表，用于记录他们的favorites
MSPetShop4Services
dbo.aspnet_Membership
dbo.aspnet_Paths
dbo.aspnet_PersonalizationAllUsers
dbo.aspnet_PersonalizationPerUser
dbo.aspnet_Profile
dbo.aspnet_Roles
dbo.aspnet_SchemaVersions
dbo.aspnet_Users
dbo.aspnet_UsersInRoles
dbo.aspnet_WebEvent_Events
存储过程一大堆的 .都在 MSPetShop4Services 里面,安装之后.你自己看吧...
看下面之前 最好先把页面运行一遍,看看具体的流程..
------------------------------------------------------------------------------------------------------
现在就一个 起始页面的 目录绑定介绍第一部分//// 按照这个框架自己先做一个小例子吧...
★ WEB 表示层
private void BindCategories() {
Category category = new Category();
repCategories.DataSource = category.GetCategories(); // 将 IList<CategoryInfo> 作为数据源
repCategories.DataBind();
★ BLL 业务逻辑层
namespace PetShop.BLL {
public class Category {
private static readonly ICategory dal = PetShop.DALFactory.DataAccess.CreateCategory();
public IList<CategoryInfo> GetCategories() {
return dal.GetCategories();
}
}
}
★ DALFactory 数据层的抽象工厂
namespace PetShop.DALFactory {
public sealed class DataAccess {
private static readonly string path = "PetShop.SQLServerDAL";
private DataAccess() { }
public static PetShop.IDAL.ICategory CreateCategory() {
string className = path + ".Category";
return (PetShop.IDAL.ICategory)Assembly.Load(path).CreateInstance(className); ------这几个方法原来没有接触过...
说明 : 通过 SQLServer数据访问层 和 数据库访问组件基础类 已经从数据库中得到了数据.此时表示层直接调用 SQLServerDAL 就可以了.
但是 却没有这么做..而是通过 BLL---->.DALFactory----> 才将数据引用进来.
}
}
}
★ IDAL 数据访问层接口定义
namespace PetShop.IDAL{
public interface ICategory {
IList<CategoryInfo> GetCategories();
}
}
★ Model 业务实体
namespace PetShop.Model {
[Serializable]
public class CategoryInfo {
private string id;
private string name;
private string description;
public CategoryInfo() { }
public CategoryInfo(string id, string name, string description) {
this.id = id;
this.name = name;
this.description = description;
}
public string Id {
get { return id; }
}
public string Name {
get { return name; }
}
public string Description {
get { return description; }
}
}
}
★ SQLServerDAL SQLServer数据访问层
namespace PetShop.SQLServerDAL {
public class Category : ICategory {
private const string SQL_SELECT_CATEGORIES = "SELECT CategoryId, Name, Descn FROM Category";
public IList<CategoryInfo> GetCategories() {
IList<CategoryInfo> categories = new List<CategoryInfo>();
using(SqlDataReader rdr = SqlHelper.ExecuteReader(SqlHelper.ConnectionStringLocalTransaction, CommandType.Text, SQL_SELECT_CATEGORIES, null)) {
while (rdr.Read()) {
CategoryInfo cat = new CategoryInfo(rdr.GetString(0), rdr.GetString(1), rdr.GetString(2));
categories.Add(cat);
}
}
return categories;
}
}
}
★ DBUtility 数据库访问组件基础类
namespace PetShop.DBUtility {
public abstract class SqlHelper {
public static readonly string ConnectionStringLocalTransaction ="Server=.;Database=master;uid=sa;pwd=sa";
public static SqlDataReader ExecuteReader(string connectionString, CommandType cmdType, string cmdText, params SqlParameter[] commandParameters) {
SqlCommand cmd = new SqlCommand();
SqlConnection conn = new SqlConnection(connectionString);
try {
PrepareCommand(cmd, conn, null, cmdType, cmdText, commandParameters);
SqlDataReader rdr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
cmd.Parameters.Clear();
return rdr;
}
catch {
conn.Close();
throw;
}
}
private static void PrepareCommand(SqlCommand cmd, SqlConnection conn, SqlTransaction trans, CommandType cmdType, string cmdText, SqlParameter[] cmdParms) {
if (conn.State != ConnectionState.Open)
conn.Open();
cmd.Connection = conn;
cmd.CommandText = cmdText;
if (trans != null)
cmd.Transaction = trans;
cmd.CommandType = cmdType;
if (cmdParms != null) {
foreach (SqlParameter parm in cmdParms)
cmd.Parameters.Add(parm);
}
}
}
}
--------------以下 就一个起始页面的缓存进行说明---------------
this.CachePolicy.Dependency = DependencyFacade.GetItemDependency(); // 过一会 就写一个 100W 的数据试一下.
让我 再来看一下关于缓存的类库
9 CacheDependencyFactory -------- 缓存依赖类的工厂类
10 ICacheDependency 缓存依赖类接口
11 TableCacheDependency 缓存依赖实现类
页面直接调用了 缓存依赖类的工厂类
public static class DependencyFacade {
private static readonly string path ="PetShop.TableCacheDependency";
public static AggregateCacheDependency GetItemDependency() {
if (!string.IsNullOrEmpty(path))
return DependencyAccess.CreateItemDependency().GetDependency();
else
return null;
}
}
----------------------缓存依赖类的工厂类
public static class DependencyAccess {
public static IPetShopCacheDependency CreateItemDependency() {
return LoadInstance("Item");
}
private static IPetShopCacheDependency LoadInstance(string className) {
string path = "PetShop.TableCacheDependency";
string fullyQualifiedClass = path + "." + className;
return (IPetShopCacheDependency)Assembly.Load(path).CreateInstance(fullyQualifiedClass);---又碰到前面遇到的了
}
}
--------------------------缓存依赖类接口
namespace PetShop.ICacheDependency {
public interface IPetShopCacheDependency {
AggregateCacheDependency GetDependency();
AggregateCacheDependency: 关键字解释:组合ASP.NET 应用程序的.System.Web.Caching.cache 对象中存储的项和 System.Web.Caching.cacheDependency 对象数组之间的多个依赖项.无法继承此类..
}
}
--------------------------缓存依赖实现类 -----还是和数据访问层那样.此时的工作已经完成. 等待工厂来引用
public class Item : TableDependency {
public Item() : base("ItemTableDependency") { }
}
}
public abstract class TableDependency : PetShop.ICacheDependency.IPetShopCacheDependency {
protected char[] configurationSeparator = new char[] { ',' };
protected AggregateCacheDependency dependency = new AggregateCacheDependency();
protected TableDependency(string configKey) {
string dbName ="MSPetShop4";
<add key="CategoryTableDependency" value="Category"/>
<add key="ProductTableDependency" value="Product,Category"/>
<add key="ItemTableDependency" value="Product,Category,Item"/>
string tableConfig = ConfigurationManager.AppSettings[configKey];
string[] tables = tableConfig.Split(configurationSeparator);
foreach (string tableName in tables)
dependency.Add(new SqlCacheDependency(dbName, tableName));
}
public AggregateCacheDependency GetDependency() {
return dependency;
}
}
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