ibatis cache不起作用

[liuwei_blog]

sqlMapConfig:

<settings cacheModelsEnabled="true" statementCachingEnabled="true" enhancementEnabled="true"
		lazyLoadingEnabled="true" errorTracingEnabled="true"
		useStatementNamespaces="true" />

sqlMap:

<cacheModel id="indCache" type ="OSCACHE" > 
        <flushInterval hours="24"/> 
 	</cacheModel>

<select id="getHistory" parameterClass="java.util.HashMap" resultClass="Ind" cacheModel="indCache">
	select ..
  </select>
  
</sqlMap>

oscache.properties:

cache.memory=true
cache.key=_oscache_cache
cache.algorithm=com.opensymphony.oscache.base.algorithm.LRUCache
cache.capacity=1000

控制台输出:
[DEBUG] 2011-01-13 16:00:30,765 [btpool0-1] com.ibatis.sqlmap.engine.cache.CacheModel - Cache 'Ind.indCache': cache miss
[DEBUG] 2011-01-13 16:02:23,218 [btpool0-1] com.ibatis.sqlmap.engine.cache.CacheModel - Cache 'Ind.indCache': stored object 'com.studio.domain.Ind@b37df5, com.studio.domain.Ind@129aa7, com.studio.domain.Ind@1677e4b, com.studio.domain.Ind@19496a7, com.ihandy.yuncai.studio....'
[DEBUG] 2011-01-13 16:07:36,531 [btpool0-1] com.ibatis.sqlmap.engine.cache.CacheModel - Cache 'Ind.indCache': cache miss
[DEBUG] 2011-01-13 16:09:29,015 [btpool0-1] com.ibatis.sqlmap.engine.cache.CacheModel - Cache 'Ind.indCache': stored object 'com.studio.domain.Ind@deda0b, com.studio.domain.Ind@bd286c, com.studio.domain.Ind@a8d724, com.studio.domain.Ind@c4925d, com.ihandy.yuncai.studio.mo...'

每次访问都是cache miss
请高手指点一二.

[happyfmy]

请参考这篇文章
http://hnylj.javaeye.com/blog/363066

[liuwei_blog]

由于条件里有日期且精确到毫秒(new Date()),所以每次查询条件都不"equals",将查询条件日期的时分秒毫秒都设为0(因为数据库里字段精确到天,这里这个条件精确到天),缓存就起作用了.^_^