@Internal public class ProcessOperator<IN,OUT> extends AbstractUdfStreamOperator<OUT,ProcessFunction<IN,OUT>> implements OneInputStreamOperator<IN,OUT>
StreamOperator
for executing
ProcessFunctions
.AbstractStreamOperator.CountingOutput, AbstractStreamOperator.LatencyGauge
userFunction
chainingStrategy, config, latencyGauge, LOG, metrics, output, timeServiceManager
Constructor and Description |
---|
ProcessOperator(ProcessFunction<IN,OUT> function) |
Modifier and Type | Method and Description |
---|---|
void |
open()
This method is called immediately before any elements are processed, it should contain the
operator's initialization logic, e.g.
|
void |
processElement(StreamRecord<IN> element)
Processes one element that arrived at this operator.
|
void |
processWatermark(Watermark mark)
Processes a
Watermark . |
close, dispose, getUserFunction, getUserFunctionParameters, initializeState, notifyOfCompletedCheckpoint, setOutputType, setup, snapshotState
getChainingStrategy, getContainingTask, getCurrentKey, getExecutionConfig, getInternalTimerService, getKeyedStateBackend, getKeyedStateStore, getMetricGroup, getOperatorConfig, getOperatorID, getOperatorName, getOperatorStateBackend, getOrCreateKeyedState, getPartitionedState, getPartitionedState, getProcessingTimeService, getRuntimeContext, getUserCodeClassloader, initializeState, numEventTimeTimers, numProcessingTimeTimers, processLatencyMarker, processLatencyMarker1, processLatencyMarker2, processWatermark1, processWatermark2, reportOrForwardLatencyMarker, setChainingStrategy, setCurrentKey, setKeyContextElement1, setKeyContextElement2, snapshotState
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
processLatencyMarker
close, dispose, getChainingStrategy, getMetricGroup, getOperatorID, initializeState, notifyOfCompletedCheckpoint, setChainingStrategy, setKeyContextElement1, setKeyContextElement2, setup, snapshotState
public ProcessOperator(ProcessFunction<IN,OUT> function)
public void open() throws Exception
AbstractStreamOperator
The default implementation does nothing.
open
in interface StreamOperator<OUT>
open
in class AbstractUdfStreamOperator<OUT,ProcessFunction<IN,OUT>>
Exception
- An exception in this method causes the operator to fail.public void processElement(StreamRecord<IN> element) throws Exception
OneInputStreamOperator
processElement
in interface OneInputStreamOperator<IN,OUT>
Exception
public void processWatermark(Watermark mark) throws Exception
OneInputStreamOperator
Watermark
.
This method is guaranteed to not be called concurrently with other methods of the operator.processWatermark
in interface OneInputStreamOperator<IN,OUT>
processWatermark
in class AbstractStreamOperator<OUT>
Exception
Watermark
Copyright © 2014–2018 The Apache Software Foundation. All rights reserved.