Framework components happen to behave like a state machine: input message, output message and component state are part of the model.

框架组件的行为正好类似于状态机：输入消息、输出消息和组件状态是模型的组成部分。

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The trace shows component invocations and exceptions, with their input and output data.

跟踪显示了组件调用和异常，以及它们的输入和输出数据。

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SOA also includes adapters that change the input and output data signatures of component operations; adapters insulate a service’s clients from changes in its interface at a slight performance cost.

SOA 还包含更改组件的输入和输出数据签名的适配器；适配器能以很小的性能开销为代价将服务的客户机与其接口的更改隔离。

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