程序包 org.apache.flink.streaming.util.keys

类概要

类	说明
KeySelectorUtil	Utility class that contains helper methods to manipulating KeySelector for streaming.
KeySelectorUtil.ArrayKeySelector<IN>	A key selector for selecting individual array fields as keys and returns them as a Tuple.
KeySelectorUtil.ComparableKeySelector<IN>	A key selector for selecting key fields via a TypeComparator.
KeySelectorUtil.OneKeySelector<IN,K>	Key extractor that extracts a single field via a generic comparator.