TCS必须能够任意地嵌套多个事务，以便整个事务依赖于每个“子”事务的成功。
The TCS must be able to arbitrarily nest multiple transactions such that the overall transaction depends on the success of each "child" transaction.
可在 IMS 消息处理区域或快速路径依赖区域中驱动这些事务。
These transactions can be driven in IMS message processing regions or fast path dependent regions.
作为一个EJB，该单例可以访问标准的EJB中间件服务集——事务管理、安全、远程、依赖注入等等。
As an EJB, the Singleton has access to the standard set of EJB middleware services - transaction management, security, remoteing, dependency injection and so on.
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