在本文中，我介绍了使用事务管理器控制一组事务的分布式事务协调服务的原型实现。

In this article, I have presented a prototype implementation of a distributed transaction coordination service that USES a transaction manager to control a set of transactions.

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该servlet以控制器的角色出现，协调预约车辆用例工作中需要完成的各个步骤。

The servlet acts in the role of a controller, coordinating the steps needed to carry out the work of the Reserve a Vehicle use case.

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如果控制器收到了来自活动的SUCCESS信号，它会发送信号到协调器组件(在本例中是PROPAGATE)，从而调用下一个活动。

If the controller receives a SUCCESS signal from an activity, it sends a signal to the coordinator component (in this case PROPAGATE), thus invoking the next activity.

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