Package org.apache.flink.datastream.impl.operators

Class ProcessOperator<IN,OUT>

java.lang.Object

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

org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator<OUT,OneInputStreamProcessFunction<IN,OUT>>

org.apache.flink.datastream.impl.operators.ProcessOperator<IN,OUT>

All Implemented Interfaces:

Serializable, CheckpointListener, BoundedOneInput, Input<IN>, KeyContext, KeyContextHandler, OneInputStreamOperator<IN,OUT>, OutputTypeConfigurable<OUT>, StreamOperator<OUT>, StreamOperatorStateHandler.CheckpointedStreamOperator, UserFunctionProvider<OneInputStreamProcessFunction<IN,OUT>>, YieldingOperator<OUT>

Direct Known Subclasses:

KeyedProcessOperator

public class ProcessOperator<IN,OUT>
extends AbstractUdfStreamOperator<OUT,OneInputStreamProcessFunction<IN,OUT>>
implements OneInputStreamOperator<IN,OUT>, BoundedOneInput

Operator for OneInputStreamProcessFunction.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected DefaultRuntimeContext	context
protected NonPartitionedContext<OUT>	nonPartitionedContext
protected TimestampCollector<OUT>	outputCollector
protected DefaultPartitionedContext	partitionedContext

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

userFunction

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
ProcessOperator(OneInputStreamProcessFunction<IN,OUT> userFunction)

Method Summary

Modifier and Type	Method	Description
protected Object	currentKey()
void	endInput()	It is notified that no more data will arrive from the input.
protected NonPartitionedContext<OUT>	getNonPartitionedContext()
protected TimestampCollector<OUT>	getOutputCollector()
protected ProcessingTimeManager	getProcessingTimeManager()
void	open()	This method is called immediately before any elements are processed, it should contain the operator's initialization logic, e.g. state initialization.
void	processElement(StreamRecord<IN> element)	Processes one element that arrived on this input of the MultipleInputStreamOperator.

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

close, finish, getUserFunction, getUserFunctionParameters, initializeState, notifyCheckpointAborted, notifyCheckpointComplete, setOutputType, setup, snapshotState

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

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

Field Detail

context

protected transient DefaultRuntimeContext context

partitionedContext

protected transient DefaultPartitionedContext partitionedContext

nonPartitionedContext

protected transient NonPartitionedContext<OUT> nonPartitionedContext

outputCollector

protected transient TimestampCollector<OUT> outputCollector

Constructor Detail

ProcessOperator

public ProcessOperator(OneInputStreamProcessFunction<IN,OUT> userFunction)

Method Detail

open

public void open()
          throws Exception

Description copied from class: AbstractStreamOperator

This method is called immediately before any elements are processed, it should contain the operator's initialization logic, e.g. state initialization.

The default implementation does nothing.

Specified by:

open in interface StreamOperator<IN>

Overrides:

open in class AbstractUdfStreamOperator<OUT,OneInputStreamProcessFunction<IN,OUT>>

Throws:

Exception - An exception in this method causes the operator to fail.

processElement

public void processElement(StreamRecord<IN> 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<IN>

Throws:

Exception

getOutputCollector

protected TimestampCollector<OUT> getOutputCollector()

endInput

public void endInput()
              throws Exception

Description copied from interface: BoundedOneInput

It is notified that no more data will arrive from the input.

WARNING: It is not safe to use this method to commit any transactions or other side effects! You can use this method to flush any buffered data that can later on be committed e.g. in a CheckpointListener.notifyCheckpointComplete(long).

NOTE: Given it is semantically very similar to the StreamOperator.finish() method. It might be dropped in favour of the other method at some point in time.

Specified by:

endInput in interface BoundedOneInput

Throws:

Exception

currentKey

protected Object currentKey()

getProcessingTimeManager

protected ProcessingTimeManager getProcessingTimeManager()

getNonPartitionedContext

protected NonPartitionedContext<OUT> getNonPartitionedContext()