Profile在petshop

Profile在petshop的应用应该要从对ProfileProvide的重写谈起。

跟往常一样，定义了一个接口IPetShopProfileProvider，那么在这个接口中我们到底要定义些什么功能呢？先看下Profile的属性吧：

<profile automaticSaveEnabled="false" defaultProvider="ShoppingCartProvider">
			<providers>
				<add name="ShoppingCartProvider" connectionStringName="SQLProfileConnString" type="PetShop.Profile.PetShopProfileProvider" applicationName=".NET Pet Shop 4.0"/>
				<add name="WishListProvider" connectionStringName="SQLProfileConnString" type="PetShop.Profile.PetShopProfileProvider" applicationName=".NET Pet Shop 4.0"/>
				<add name="AccountInfoProvider" connectionStringName="SQLProfileConnString" type="PetShop.Profile.PetShopProfileProvider" applicationName=".NET Pet Shop 4.0"/>
			</providers>
			<properties>
				<add name="ShoppingCart" type="PetShop.BLL.Cart" allowAnonymous="true" provider="ShoppingCartProvider"/>
				<add name="WishList" type="PetShop.BLL.Cart" allowAnonymous="true" provider="WishListProvider"/>
				<add name="AccountInfo" type="PetShop.Model.AddressInfo" allowAnonymous="false" provider="AccountInfoProvider"/>
			</properties>
		</profile>

可以看到Profile定义了ShoppingCart、WishList和AccountInfo属性，那么在数据库MSPetShop4Profile中友对应的表cart、Account。

由此可以见我们最主要是要对cart和Account进行操作，当然还有对Profile的进行操作，如最后登录时间等。

比较啰嗦，现在贴出自己不太理解的代码块（方便以后在研究），在PetShopProfileProvider中队IPetShopProfileProvider进行了实现：

public void UpdateActivityDates(string userName, bool activityOnly, string appName) {
			DateTime activityDate = DateTime.Now;

			string sqlUpdate;
			SqlParameter[] parms;

			if(activityOnly) {
				sqlUpdate = "UPDATE Profiles Set LastActivityDate = @LastActivityDate WHERE Username = @Username AND ApplicationName = @ApplicationName;";
				parms = new SqlParameter[]{						   
					new SqlParameter("@LastActivityDate", SqlDbType.DateTime),
					new SqlParameter("@Username", SqlDbType.VarChar, 256),
					new SqlParameter("@ApplicationName", SqlDbType.VarChar, 256)};

				parms[0].Value = activityDate;
				parms[1].Value = userName;
				parms[2].Value = appName;

			}
			else {
				sqlUpdate = "UPDATE Profiles Set LastActivityDate = @LastActivityDate, LastUpdatedDate = @LastUpdatedDate WHERE Username = @Username AND ApplicationName = @ApplicationName;";
				parms = new SqlParameter[]{
					new SqlParameter("@LastActivityDate", SqlDbType.DateTime),
					new SqlParameter("@LastUpdatedDate", SqlDbType.DateTime),
					new SqlParameter("@Username", SqlDbType.VarChar, 256),
					new SqlParameter("@ApplicationName", SqlDbType.VarChar, 256)};

				parms[0].Value = activityDate;
				parms[1].Value = activityDate;
				parms[2].Value = userName;
				parms[3].Value = appName;
			}

			SqlHelper.ExecuteNonQuery(SqlHelper.ConnectionStringProfile, CommandType.Text, sqlUpdate, parms);

		}

我不知道为什么事三个参数，也不知道为什么是这三个参数：username、activityOnly、appName。如果说appName是.Net PetShop4.0的话；

activityOnly进行判断。从这个函数的名字UpdateActivityDates可以看出是对最后一次活动的时间进行更新。

接下来是GetUniqueID：

public int GetUniqueID(string userName, bool isAuthenticated, bool ignoreAuthenticationType, string appName) {
			string sqlSelect = "SELECT UniqueID FROM Profiles WHERE Username = @Username AND ApplicationName = @ApplicationName";

			SqlParameter[] parms = {
				new SqlParameter("@Username", SqlDbType.VarChar, 256),
				new SqlParameter("@ApplicationName", SqlDbType.VarChar, 256)};
			parms[0].Value = userName;
			parms[1].Value = appName;

			if(!ignoreAuthenticationType) {
				sqlSelect += " AND IsAnonymous = @IsAnonymous";
				Array.Resize<SqlParameter>(ref parms, parms.Length + 1);
				parms[2] = new SqlParameter("@IsAnonymous", SqlDbType.Bit);
				parms[2].Value = !isAuthenticated;
			}

			int uniqueID = 0;

			object retVal = null;
			retVal = SqlHelper.ExecuteScalar(SqlHelper.ConnectionStringProfile, CommandType.Text, sqlSelect, parms);

			if(retVal == null)
				uniqueID = CreateProfileForUser(userName, isAuthenticated, appName);
			else
				uniqueID = Convert.ToInt32(retVal);
			return uniqueID;
		}

这个函数带有四个参数：string userName, bool isAuthenticated, bool ignoreAuthenticationType, string appName。

我不知道ignareAuthticationType是干嘛用的，但是根据上面的源码可以看出，ignareAuthticationType为false是就执行

parms[2].Value = !isAuthenticated