使用会话Bean作为远程外观使用，对复杂交互进行包装，并减少Portlet和域对象间的远程调用。
Use session beans acting as remote facades to wrap complex interactions and to reduce remote calls between portlets and domain objects.
外观：将消息转发到合适的远程组件。
Facade: forward the message to the appropriate remote component.
包装外观中所含的遗留代码的典型示例是一组相关模块，这些模块负责与远程语音设备管理平台进行交互。
A typical example of legacy code contained by a wrapper-facade was a group of related modules responsible for interacting with a remote telephony-device management platform.
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