iBATIS2.3.x是否可以延迟加载java.lang.Integer?
正在尝试延迟加载java.land.Integer。延迟加载属性:iBATIS2.3.x是否可以延迟加载java.lang.Integer?,java,sql,orm,lazy-loading,ibatis,Java,Sql,Orm,Lazy Loading,Ibatis,正在尝试延迟加载java.land.Integer。延迟加载属性: <result property="foo.cnt" column="id" select="getCnt"/> Sql语句如下所示: <sql id="sql-getCnt"> SELECT count(*) as cnt FROM bar b INNER JOIN bar2 b2 on b.id = b2.id WHERE bar.id=#id# AND b2.wo
<result property="foo.cnt" column="id" select="getCnt"/>
Sql语句如下所示:
<sql id="sql-getCnt">
SELECT count(*) as cnt
FROM bar b INNER JOIN bar2 b2 on b.id = b2.id
WHERE bar.id=#id#
AND b2.workds IS NULL
</sql>
<select id="getCnt" parameterClass="int" resultClass="java.lang.Integer">
<include refid="sql-getCnt"/>
</select>
选择这样做的语句:
<sql id="sql-getCnt">
SELECT count(*) as cnt
FROM bar b INNER JOIN bar2 b2 on b.id = b2.id
WHERE bar.id=#id#
AND b2.workds IS NULL
</sql>
<select id="getCnt" parameterClass="int" resultClass="java.lang.Integer">
<include refid="sql-getCnt"/>
</select>
设置:
<settings
enhancementEnabled="true"
errorTracingEnabled="true"
lazyLoadingEnabled="true"
useStatementNamespaces="true"
/>
我认为延迟加载是有效的。但这就是我在日志中看到的:
整数的延迟加载有多慢?完全可以吗?原因是java.lang.Integer类是final类,因此cglib无法为其创建代理对象。答案是明确而简单的