程序包 org.apache.flink.streaming.api.functions

接口概要

接口	说明
AssignerWithPeriodicWatermarks<T>	The AssignerWithPeriodicWatermarks assigns event time timestamps to elements, and generates low watermarks that signal event time progress within the stream.
AssignerWithPunctuatedWatermarks<T>	The AssignerWithPunctuatedWatermarks assigns event time timestamps to elements, and generates low watermarks that signal event time progress within the stream.
TimestampAssigner<T>	A TimestampAssigner assigns event time timestamps to elements.
TimestampExtractor<T>	已过时 This class has been replaced by AssignerWithPeriodicWatermarks and AssignerWithPunctuatedWatermarks

类概要

类	说明
AscendingTimestampExtractor<T>	已过时 Extend AscendingTimestampExtractor instead.
IngestionTimeExtractor<T>	A timestamp assigner that assigns timestamps based on the machine's wall clock.
KeyedProcessFunction<K,I,O>	A keyed function that processes elements of a stream.
ProcessFunction<I,O>	A function that processes elements of a stream.