Package org.apache.flink.streaming.runtime.operators.windowing

This package contains the operators that implement the various window operations on data streams.

Interface Summary

Interface	Description
KeyMap.LazyFactory<V>	A factory for lazy/on-demand instantiation of values.
KeyMap.TraversalEvaluator<K,V>	A visitor for a traversal over the union of multiple hash maps.
MergingWindowSet.MergeFunction<W>	Callback for MergingWindowSet.addWindow(Window, MergeFunction).

Class Summary

Class	Description
EvictingWindowOperator<K,IN,OUT,W extends Window>	A WindowOperator that also allows an Evictor to be used.
KeyMap<K,V>	A special Hash Map implementation that can be traversed efficiently in sync with other hash maps.
KeyMap.Entry<K,V>	An entry in the hash table.
MergingWindowSet<W extends Window>	Utility for keeping track of merging Windows when using a MergingWindowAssigner in a WindowOperator.
TimestampedValue<T>	Stores the value and the timestamp of the record.
WindowOperator<K,IN,ACC,OUT,W extends Window>	An operator that implements the logic for windowing based on a WindowAssigner and Trigger.
WindowOperator.Timer<K,W extends Window>	Internal class for keeping track of in-flight timers.
WindowOperatorBuilder<T,K,W extends Window>	A builder for creating WindowOperators.