.Net 缓存代理类 的初步考虑.

EntityData为实体数据类

我们这里将实体数据进行缓存,缓存方法是

//从Web.Config取得对缓存过期的设置

ICacheItemExpiration[] ice=ExpireTerm.GetExpirationPolicy();

//获得缓冲对象

CacheManager cm=CacheManager.GetCacheManager();

存储

cm.Add(EntityKeyCreator.CreateKey(entity),entity,ice,CacheItemPriority.Normal,null);

此类可以做实体代理类

using Microsoft.ApplicationBlocks.Cache;

/// <summary>

/// 缓冲实体

/// </summary>

/// <param name="entity">实体数据</param>

public static void CacheEntity(EntityData entity)

{

if(entity.IsEmpty)

return;

ICacheItemExpiration[] ice=ExpireTerm.GetExpirationPolicy();

//获得缓冲对象

CacheManager cm=CacheManager.GetCacheManager();

//存储

cm.Add(ExpireTerm.CreateKey(entity),entity,ice,CacheItemPriority.Normal,null);

}

ExpireTerm.class

using Microsoft.ApplicationBlocks.Cache;

internal static ICacheItemExpiration[] GetExpirationPolicy()

{

if(Object.Equals(configSetting,null))

{

configSetting = (ICacheItemExpiration[])ConfigurationSettings.GetConfig("TopCoolExpireTerm");

}

return configSetting;

}

internal static string CreateKey(EntityData entity)

{

DataSet ds = new DataSet();

DataColumn[] keyColumns;

if(entity.Tables.Contains(entity.MainTableName))

keyColumns = entity.Tables[entity.MainTableName].PrimaryKey;

else

keyColumns = entity.CurrentTable.PrimaryKey;//

StringBuilder sb = new StringBuilder(entity.EntityTypeName);

//用:分隔实体类列名

for(int i=0;i<keyColumns.Length;i++)

{

sb.Append(":");

sb.Append(entity[keyColumns[i].ColumnName].ToString());

}

return sb.ToString();

}

注意:EntityData从DataSet 继承过来.