可以这样做是因为在这种情况下客户端是运行在相同服务器上的另一个EJB。
We can do that since the client in this case is another EJB running on the same server.
这样做是正确的，因为这就是通知所在的位置；但是在这种情况下，具体方面中的切入点控制着通知的应用，而这常常是一个很有趣的地方。
This is correct because that's where the advice is; however in this situation the pointcut in the concrete aspect is controlling the application of advice, and it is that which is often of interest.
当然，在这种情况下会涉及更多的工作，但是这样做的一个好处是，SBS 模型本身会得到显著增强，从而可以涵盖更多的业务领域或行业。
Of course, more work is involved in this case, but the good thing is that after it is done, the SBS models themselves could be significantly enhanced to cover more business domains or industries.
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