<hibernate-mapping package=”example”>
<class name=”Product”>
<id name=”id”>
  <generator class=”native” />
</id>
<version name=”version” type=”long” generated=”always”/>
<property name=”name” not-null=”true” />
</class>
</hibernate-mapping>

Hibernate:
/* update example.Product */
update Product
set
 name=?
where
 id=?
 and version=?

Hibernate:
/* get generated state example.Product */
select product_.version as version8_
from
 Product product_
where
 product_.id=?