.Net 緩存代理類的初步考慮.

2024-07-10 12:58:41

字體：大中小

供稿：網(wǎng)友

entitydata為實(shí)體數(shù)據(jù)類
我們這里將實(shí)體數(shù)據(jù)進(jìn)行緩存,緩存方法是
//從web.config取得對緩存過期的設(shè)置
icacheitemexpiration[] ice=expireterm.getexpirationpolicy();
//獲得緩沖對象
cachemanager cm=cachemanager.getcachemanager();
存儲
cm.add(entitykeycreator.createkey(entity),entity,ice,cacheitempriority.normal,null);

此類可以做實(shí)體代理類
using microsoft.applicationblocks.cache;
/// <summary>
/// 緩沖實(shí)體
/// </summary>
/// <param name="entity">實(shí)體數(shù)據(jù)</param>
public static void cacheentity(entitydata entity)
{
if(entity.isempty)
return;
icacheitemexpiration[] ice=expireterm.getexpirationpolicy();
//獲得緩沖對象
cachemanager cm=cachemanager.getcachemanager();
//存儲

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:分隔實(shí)體類列名
for(int i=0;i<keycolumns.length;i++)
{
sb.append(":");
sb.append(entity[keycolumns[i].columnname].tostring());
}
return sb.tostring();
}

注意:entitydata從dataset 繼承過來.

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