版本控制实现乐观锁optimistic-lockversionid nameidgenerator columnversion accessfield
版本控制实现乐观锁
optimistic-lock="version"><id name="id"><generator column="version" access="field" type="integer"></version><property name="username"><column name="username"></column></property><property name="password"><column name="password"></column></property></class></hibernate-mapping>
?
?
?