@Internal public class StreamFlatMap<IN,OUT> extends AbstractUdfStreamOperator<OUT,org.apache.flink.api.common.functions.FlatMapFunction<IN,OUT>> implements OneInputStreamOperator<IN,OUT>
StreamOperator
for executing FlatMapFunctions
.AbstractStreamOperator.CountingOutput<OUT>
userFunction
chainingStrategy, config, latencyStats, LOG, metrics, output, timeServiceManager
构造器和说明 |
---|
StreamFlatMap(org.apache.flink.api.common.functions.FlatMapFunction<IN,OUT> flatMapper) |
限定符和类型 | 方法和说明 |
---|---|
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 at this operator.
|
close, dispose, getUserFunction, getUserFunctionParameters, initializeState, notifyCheckpointComplete, setOutputType, setup, snapshotState
getChainingStrategy, getContainingTask, getCurrentKey, getExecutionConfig, getInternalTimerService, getKeyedStateBackend, getKeyedStateStore, getMetricGroup, getOperatorConfig, getOperatorID, getOperatorName, getOperatorStateBackend, getOrCreateKeyedState, getPartitionedState, getPartitionedState, getProcessingTimeService, getRuntimeContext, getUserCodeClassloader, initializeState, numEventTimeTimers, numProcessingTimeTimers, prepareSnapshotPreBarrier, processLatencyMarker, processLatencyMarker1, processLatencyMarker2, processWatermark, processWatermark1, processWatermark2, reportOrForwardLatencyMarker, setChainingStrategy, setCurrentKey, setKeyContextElement1, setKeyContextElement2, snapshotState
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
processLatencyMarker, processWatermark
close, dispose, getChainingStrategy, getMetricGroup, getOperatorID, initializeState, prepareSnapshotPreBarrier, setChainingStrategy, setKeyContextElement1, setKeyContextElement2, setup, snapshotState
getCurrentKey, setCurrentKey
public void open() throws Exception
AbstractStreamOperator
The default implementation does nothing.
open
在接口中 StreamOperator<OUT>
open
在类中 AbstractUdfStreamOperator<OUT,org.apache.flink.api.common.functions.FlatMapFunction<IN,OUT>>
Exception
- An exception in this method causes the operator to fail.public void processElement(StreamRecord<IN> element) throws Exception
OneInputStreamOperator
processElement
在接口中 OneInputStreamOperator<IN,OUT>
Exception
Copyright © 2014–2019 The Apache Software Foundation. All rights reserved.