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:

AbstractArrowPythonAggregateFunctionOperator, AbstractAsyncStateStreamOperator, AbstractAsyncStateStreamOperatorV2, AbstractAsyncStateUdfStreamOperator, AbstractEmbeddedDataStreamPythonFunctionOperator, AbstractEmbeddedPythonFunctionOperator, AbstractEmbeddedStatelessFunctionOperator, AbstractExternalDataStreamPythonFunctionOperator, AbstractExternalOneInputPythonFunctionOperator, AbstractExternalPythonFunctionOperator, AbstractExternalTwoInputPythonFunctionOperator, AbstractMapBundleOperator, AbstractOneInputEmbeddedPythonFunctionOperator, AbstractOneInputPythonFunctionOperator, AbstractPythonFunctionOperator, AbstractPythonScalarFunctionOperator, AbstractPythonStreamAggregateOperator, AbstractPythonStreamGroupAggregateOperator, AbstractStatelessFunctionOperator, AbstractStreamArrowPythonBoundedRangeOperator, AbstractStreamArrowPythonBoundedRowsOperator, AbstractStreamArrowPythonOverWindowAggregateFunctionOperator, AbstractStreamingJoinOperator, AbstractStreamingWriter, AbstractStreamOperator, AbstractStreamOperatorV2, AbstractTwoInputEmbeddedPythonFunctionOperator, AbstractUdfStreamOperator, AggregateWindowOperator, AlignedWindowTableFunctionOperator, ArrowPythonScalarFunctionOperator, AsyncWaitOperator, BaseTwoInputStreamOperatorWithStateRetention, BatchArrowPythonGroupAggregateFunctionOperator, BatchArrowPythonGroupWindowAggregateFunctionOperator, BatchArrowPythonOverWindowAggregateFunctionOperator, BatchCoBroadcastWithKeyedOperator, BatchCoBroadcastWithNonKeyedOperator, BatchCompactCoordinator, BatchCompactOperator, BatchFileWriter, BatchGroupedReduceOperator, BatchMultipleInputStreamOperator, BootstrapStreamTaskRunner, BroadcastStateBootstrapOperator, BufferDataOverWindowOperator, CacheTransformationTranslator.IdentityStreamOperator, CacheTransformationTranslator.NoOpStreamOperator, CepOperator, CoBroadcastWithKeyedOperator, CoBroadcastWithNonKeyedOperator, CollectSinkOperator, CompactCoordinator, CompactCoordinator, CompactCoordinatorStateHandler, CompactFileWriter, CompactOperator, CompactorOperator, CompactorOperatorStateHandler, ConstraintEnforcer, ContinuousFileReaderOperator, CoProcessOperator, CoStreamFlatMap, CoStreamMap, DelegateOperatorTransformation.DelegateOperator, DynamicFilteringDataCollectorOperator, EmbeddedPythonBatchCoBroadcastProcessOperator, EmbeddedPythonBatchKeyedCoBroadcastProcessOperator, EmbeddedPythonCoProcessOperator, EmbeddedPythonKeyedCoProcessOperator, EmbeddedPythonKeyedProcessOperator, EmbeddedPythonProcessOperator, EmbeddedPythonScalarFunctionOperator, EmbeddedPythonTableFunctionOperator, EmbeddedPythonWindowOperator, EvictingWindowOperator, ExternalPythonBatchCoBroadcastProcessOperator, ExternalPythonBatchKeyedCoBroadcastProcessOperator, ExternalPythonCoProcessOperator, ExternalPythonKeyedCoProcessOperator, ExternalPythonKeyedProcessOperator, ExternalPythonProcessOperator, FusionStreamOperatorBase, GenericWriteAheadSink, GlobalRuntimeFilterBuilderOperator, GroupReduceOperator, HashJoinOperator, HiveScriptTransformOperator, InputConversionOperator, IntervalJoinOperator, KeyedCoProcessOperator, KeyedCoProcessOperatorWithWatermarkDelay, KeyedMapBundleOperator, KeyedProcessOperator, KeyedProcessOperator, KeyedSortPartitionOperator, KeyedStateBootstrapOperator, KeyedStateReaderOperator, KeyedTwoInputBroadcastProcessOperator, KeyedTwoInputNonBroadcastProcessOperator, KeyedTwoOutputProcessOperator, LegacyKeyedCoProcessOperator, LegacyKeyedProcessOperator, LimitOperator, LocalRuntimeFilterBuilderOperator, LocalSlicingWindowAggOperator, MapBundleOperator, MapPartitionOperator, MiniBatchStreamingJoinOperator, MultipleInputStreamOperatorBase, NonBufferOverWindowOperator, OutputConversionOperator, PartitionAggregateOperator, PartitionCommitter, PartitionReduceOperator, ProcessOperator, ProcessOperator, ProcTimeMiniBatchAssignerOperator, ProcTimeSortOperator, PythonScalarFunctionOperator, PythonStreamGroupAggregateOperator, PythonStreamGroupTableAggregateOperator, PythonStreamGroupWindowAggregateOperator, PythonTableFunctionOperator, QueryableAppendingStateOperator, QueryableValueStateOperator, RankOperator, RowKindSetter, RowTimeMiniBatchAssginerOperator, RowTimeSortOperator, SinkOperator, SinkUpsertMaterializer, SortLimitOperator, SortMergeJoinOperator, SortOperator, SortPartitionOperator, SourceOperator, StateBootstrapOperator, StateBootstrapWrapperOperator, StateReaderOperator, StreamArrowPythonGroupWindowAggregateFunctionOperator, StreamArrowPythonProcTimeBoundedRangeOperator, StreamArrowPythonProcTimeBoundedRowsOperator, StreamArrowPythonRowTimeBoundedRangeOperator, StreamArrowPythonRowTimeBoundedRowsOperator, StreamFilter, StreamFlatMap, StreamGroupedReduceOperator, StreamingFileWriter, StreamingJoinOperator, StreamingSemiAntiJoinOperator, StreamMap, StreamProject, StreamRecordTimestampInserter, StreamSink, StreamSortOperator, StreamSource, TableAggregateWindowOperator, TableStreamOperator, TemporalProcessTimeJoinOperator, TemporalRowTimeJoinOperator, TimestampsAndWatermarksOperator, TwoInputBroadcastProcessOperator, TwoInputNonBroadcastProcessOperator, TwoOutputProcessOperator, UnalignedWindowTableFunctionOperator, UnionStreamOperator, WatermarkAssignerOperator, WindowAggOperator, WindowJoinOperator, WindowOperator, WindowOperator, WindowReaderOperator, WindowTableFunctionOperatorBase

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 and Description
Object	getCurrentKey()
void	setCurrentKey(Object key)

Method Detail

setCurrentKey

void setCurrentKey(Object key)

getCurrentKey

Object getCurrentKey()