本文整理汇总了Java中org.apache.flink.cep.PatternStream类的典型用法代码示例。如果您正苦于以下问题：Java PatternStream类的具体用法？Java PatternStream怎么用？Java PatternStream使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
PatternStream类属于org.apache.flink.cep包，在下文中一共展示了PatternStream类的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: toWarningStream
import org.apache.flink.cep.PatternStream; //导入依赖的package包/类
private static <TWarningType extends IWarning> DataStream<TWarningType> toWarningStream(DataStream<LocalWeatherData> localWeatherDataDataStream, IWarningPattern<LocalWeatherData, TWarningType> warningPattern) {
PatternStream<LocalWeatherData> tempPatternStream = CEP.pattern(
localWeatherDataDataStream.keyBy(new KeySelector<LocalWeatherData, String>() {
@Override
public String getKey(LocalWeatherData localWeatherData) throws Exception {
return localWeatherData.getStation().getWban();
}
}),
warningPattern.getEventPattern());
DataStream<TWarningType> warnings = tempPatternStream.select(new PatternSelectFunction<LocalWeatherData, TWarningType>() {
@Override
public TWarningType select(Map<String, List<LocalWeatherData>> map) throws Exception {
return warningPattern.create(map);
}
}, new GenericTypeInfo<TWarningType>(warningPattern.getWarningTargetType()));
return warnings;
}