在样本应用程序的执行过程中，事件被记录以使演示用户可以看到各种Web服务在幕后的交互。
During the execution of the sample application, events are logged so that the demo user can see the interactions of the various Web services behind the scenes.
您很可能使用消息记录器、事件发射器原语或者调用审计服务或JDBC适配器来实现此目的。
You would likely do this using the message logger, event emitter primitives, or service invokes to auditing services or JDBC adapters.
如果某个事件或服务需要被记录，可以在每个服务需要记录的起始和结束处创建一个日志任务。
If an event or service call needs to be logged, create a logging task at the beginning and end of each service where logging is required.
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