更新时间:2023-12-04 08:15:16
从EJB 3.1规范,第21.2.2节。编程限制:
From the EJB 3.1 spec, Chapter 21.2.2. Programming Restrictions:
企业bean不能使用线程
同步原语到
同步执行多个
实例,除非它是具有bean管理的
并发的Singleton
会话bean。
An enterprise bean must not use thread synchronization primitives to synchronize execution of multiple instances, except if it is a Singleton session bean with bean-managed concurrency.
推理也很有意思:
如果
EJB容器跨多个JVM分布企业
bean的实例,则同步将不起作用。
Synchronization would not work if the EJB container distributed enterprise bean’s instances across multiple JVMs.