You've probably figured out by now that the "bad" auto refresh code would create a significant workload on the server if lots of people want to see the status.
The managed objects created by the provider contain similar auto-enlistment code as the JDBC wrapper added by the container-supplied connection pool manager.
提供者创建的受管对象包含与 JDBC 包装器（由容器提供的连接池管理器添加）相似的自动征用代码。
3
In most applications, the developers need to hand-code business logic and validation rules that are not easy to auto-generate. How do the code generation tools address this requirement?