shuai-xu commented on a change in pull request #11168: [FLINK-16140] [docs-zh]
Translate Event Processing (CEP) page into Chinese
URL: https://github.com/apache/flink/pull/11168#discussion_r387438680
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File path: docs/dev/libs/cep.zh.md
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@@ -1651,44 +1607,42 @@ val lateData: DataStream[String] =
result.getSideOutput(lateDataOutputTag)
</div>
</div>
-### Time context
+### 时间上下文
-In [PatternProcessFunction](#selecting-from-patterns) as well as in
[IterativeCondition](#conditions) user has access to a context
-that implements `TimeContext` as follows:
+在[PatternProcessFunction](#从模式中选取)中，用户可以和[IterativeCondition](#条件)中
+一样按照下面的方法使用实现了`TimeContext`的上下文：
{% highlight java %}
/**
- * Enables access to time related characteristics such as current processing
time or timestamp of
- * currently processed element. Used in {@link PatternProcessFunction} and
- * {@link org.apache.flink.cep.pattern.conditions.IterativeCondition}
+ * 支持获取事件属性比如当前处理事件或当前正处理的事件的时间。
+ * 用在{@link PatternProcessFunction}和{@link
org.apache.flink.cep.pattern.conditions.IterativeCondition}中
*/
@PublicEvolving
public interface TimeContext {
/**
- * Timestamp of the element currently being processed.
+ * 当前正处理的事件的时间戳。
*
- * <p>In case of {@link
org.apache.flink.streaming.api.TimeCharacteristic#ProcessingTime} this
- * will be set to the time when event entered the cep operator.
+ * <p>如果是{@link
org.apache.flink.streaming.api.TimeCharacteristic#ProcessingTime}，这个值会被设置为事件进入CEP算子的时间。
*/
long timestamp();
- /** Returns the current processing time. */
+ /** 返回当前的处理时间。 */
long currentProcessingTime();
}
{% endhighlight %}
-This context gives user access to time characteristics of processed events
(incoming records in case of `IterativeCondition` and matches in case of
`PatternProcessFunction`).
-Call to `TimeContext#currentProcessingTime` always gives you the value of
current processing time and this call should be preferred to e.g. calling
`System.currentTimeMillis()`.
+这个上下文让用户可以获取处理的事件（在`IterativeCondition`时候是进来的记录，在`PatternProcessFunction`是匹配的结果）的时间属性。
+调用`TimeContext#currentProcessingTime`总是返回当前的处理时间，而且尽量去调用这个函数而不是调用其它的比如说`System.currentTimeMillis()`。
-In case of `TimeContext#timestamp()` the returned value is equal to assigned
timestamp in case of `EventTime`. In `ProcessingTime` this will equal to the
point of time when said event entered
-cep operator (or when the match was generated in case of
`PatternProcessFunction`). This means that the value will be consistent across
multiple calls to that method.
+使用`EventTime`时，`TimeContext#timestamp()`返回的值等于分配的时间戳。
+使用`ProcessingTime`是，这个值等于事件进入CEP算子的时间点（在`PatternProcessFunction`中是匹配产生的时间）。
Review comment:
done
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