hibernate中悲观锁 乐观锁

<hibernate-mapping package="com.chinahometex.b2b.cms.entity.main">
<class name="CmsGroup" table="jc_group" dynamic-insert="true" optimistic-lock="version"> <!-- 打开<strong>乐观</strong>锁，确定使用版本类型<strong>乐观</strong>锁-->
<meta attribute="sync-DAO">false</meta>
<cache usage="read-write"/>
<id name="id" type="java.lang.Integer" column="group_id"><generator class="identity"/></id>
<version name="version" column="version" ></version> <!-- 使用<strong>乐观</strong>锁的列 -->
<property name="name" column="group_name" type="string" not-null="true" length="100" />
<property name="priority" column="priority" type="integer" not-null="true" length="10"/>
<property name="allowPerDay" column="allow_per_day" type="integer" not-null="true" length="10"/>
<property name="allowMaxFile" column="allow_max_file" type="integer" not-null="true" length="10"/>
<property name="allowSuffix" column="allow_suffix" type="string" not-null="false" length="255"/>
<property name="needCaptcha" column="need_captcha" type="java.lang.Boolean" not-null="true"/>
<property name="needCheck" column="need_check" type="java.lang.Boolean" not-null="true"/>
<property name="regDef" column="is_reg_def" type="java.lang.Boolean" not-null="true"…………………………………………………………………………<p style="COLOR: red; FONT-SIZE: 16px"><strong>文献：<a target=_blank href="http://www.verydemo.com/demo_c146_i2943.html" target="_blank">http://www.verydemo.com/demo_c146_i2943.html</a></strong></p>