Package org.apache.flink.streaming.api.operators

Interface KeyContext

All Known Subinterfaces:

MultipleInputStreamOperator<OUT>, OneInputStreamOperator<IN,OUT>, StreamOperator<OUT>, TwoInputStreamOperator<IN1,IN2,OUT>, YieldingOperator<OUT>

All Known Implementing Classes:

AbstractAsyncStateStreamOperator, AbstractAsyncStateStreamOperatorV2, AbstractAsyncStateUdfStreamOperator, AbstractStreamOperator, AbstractStreamOperatorV2, AbstractUdfStreamOperator, AsyncEvictingWindowOperator, AsyncIntervalJoinOperator, AsyncKeyedProcessOperator, AsyncStreamFlatMap, AsyncWindowOperator, BatchCoBroadcastWithKeyedOperator, BatchCoBroadcastWithNonKeyedOperator, BatchGroupedReduceOperator, CacheTransformationTranslator.IdentityStreamOperator, CacheTransformationTranslator.NoOpStreamOperator, CoBroadcastWithKeyedOperator, CoBroadcastWithNonKeyedOperator, CollectSinkOperator, ContinuousFileReaderOperator, CoProcessOperator, CoStreamFlatMap, CoStreamMap, EvictingWindowOperator, GlobalCommitterOperator, IntervalJoinOperator, KeyedCoProcessOperator, KeyedProcessOperator, KeyedSortPartitionOperator, LegacyKeyedCoProcessOperator, LegacyKeyedProcessOperator, MapPartitionOperator, PartitionAggregateOperator, PartitionReduceOperator, ProcessOperator, QueryableAppendingStateOperator, QueryableValueStateOperator, SortPartitionOperator, SourceOperator, StreamFilter, StreamFlatMap, StreamGroupedReduceAsyncStateOperator, StreamGroupedReduceOperator, StreamMap, StreamProject, StreamSink, StreamSource, TimestampsAndWatermarksOperator, WindowOperator

public interface KeyContext

Interface for setting and querying the current key of keyed operations.

This is mainly used by the timer system to query the key when creating timers and to set the correct key context when firing a timer.

Method Summary

Modifier and Type	Method	Description
Object	getCurrentKey()
void	setCurrentKey(Object key)

Method Detail

setCurrentKey

void setCurrentKey(Object key)

getCurrentKey

Object getCurrentKey()