Package org.apache.flink.streaming.runtime.translators

Class CacheTransformationTranslator.IdentityStreamOperator<T>

java.lang.Object

org.apache.flink.streaming.api.operators.AbstractStreamOperator<T>

org.apache.flink.streaming.runtime.translators.CacheTransformationTranslator.IdentityStreamOperator<T>

Type Parameters:

T - The output type of the operator, which is the type of the cached intermediate * dataset as well.

All Implemented Interfaces:

Serializable, org.apache.flink.api.common.state.CheckpointListener, Input<T>, KeyContext, KeyContextHandler, OneInputStreamOperator<T,T>, StreamOperator<T>, StreamOperatorStateHandler.CheckpointedStreamOperator, YieldingOperator<T>

Enclosing class:

CacheTransformationTranslator<OUT,T extends CacheTransformation<OUT>>

public static class CacheTransformationTranslator.IdentityStreamOperator<T>
extends AbstractStreamOperator<T>
implements OneInputStreamOperator<T,T>

The CacheTransformationTranslator.IdentityStreamOperator acts as a dummy source to consume cached intermediate dataset.

See Also:

• Serialized Form

Field Summary

Fields inherited from class org.apache.flink.streaming.api.operators.AbstractStreamOperator

combinedWatermark, config, lastRecordAttributes1, lastRecordAttributes2, latencyStats, LOG, metrics, output, processingTimeService, stateHandler, stateKeySelector1, stateKeySelector2, timeServiceManager

Constructor Summary

Constructors

Constructor	Description
IdentityStreamOperator()

Method Summary

Modifier and Type	Method	Description
void	processElement(StreamRecord<T> element)	Processes one element that arrived on this input of the MultipleInputStreamOperator.

Methods inherited from class org.apache.flink.streaming.api.operators.AbstractStreamOperator

beforeInitializeStateHandler, close, finish, getContainingTask, getCurrentKey, getExecutionConfig, getInternalTimerService, getKeyedStateBackend, getKeyedStateStore, getMetricGroup, getOperatorConfig, getOperatorID, getOperatorName, getOperatorStateBackend, getOrCreateKeyedState, getPartitionedState, getPartitionedState, getProcessingTimeService, getRuntimeContext, getStateKeySelector1, getStateKeySelector2, getTimeServiceManager, getUserCodeClassloader, hasKeyContext1, hasKeyContext2, initializeState, initializeState, isAsyncStateProcessingEnabled, isUsingCustomRawKeyedState, notifyCheckpointAborted, notifyCheckpointComplete, open, prepareSnapshotPreBarrier, processLatencyMarker, processLatencyMarker1, processLatencyMarker2, processRecordAttributes, processRecordAttributes1, processRecordAttributes2, processWatermark, processWatermark, processWatermark1, processWatermark1, processWatermark2, processWatermark2, processWatermarkStatus, processWatermarkStatus, processWatermarkStatus1, processWatermarkStatus2, reportOrForwardLatencyMarker, setCurrentKey, setKeyContextElement1, setKeyContextElement2, setMailboxExecutor, setProcessingTimeService, setup, snapshotState, snapshotState, useSplittableTimers

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.flink.api.common.state.CheckpointListener

notifyCheckpointAborted, notifyCheckpointComplete

Methods inherited from interface org.apache.flink.streaming.api.operators.Input

processLatencyMarker, processRecordAttributes, processWatermark, processWatermark, processWatermarkStatus

Methods inherited from interface org.apache.flink.streaming.api.operators.KeyContext

getCurrentKey, setCurrentKey

Methods inherited from interface org.apache.flink.streaming.api.operators.KeyContextHandler

hasKeyContext

Methods inherited from interface org.apache.flink.streaming.api.operators.OneInputStreamOperator

setKeyContextElement

Methods inherited from interface org.apache.flink.streaming.api.operators.StreamOperator

close, finish, getMetricGroup, getOperatorAttributes, getOperatorID, initializeState, open, prepareSnapshotPreBarrier, setKeyContextElement1, setKeyContextElement2, snapshotState

Constructor Details

IdentityStreamOperator

public IdentityStreamOperator()

Method Details

processElement

public void processElement(StreamRecord<T> element)
                    throws Exception

Description copied from interface: Input

Processes one element that arrived on this input of the MultipleInputStreamOperator. This method is guaranteed to not be called concurrently with other methods of the operator.

Specified by:

processElement in interface Input<T>

Throws:

Exception