org.apache.flink.table.runtime.operators.python.aggregate

Class AbstractPythonStreamGroupAggregateOperator

java.lang.Object

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

org.apache.flink.streaming.api.operators.python.AbstractPythonFunctionOperator<OUT>

org.apache.flink.streaming.api.operators.python.process.AbstractExternalPythonFunctionOperator<OUT>

org.apache.flink.table.runtime.operators.python.AbstractOneInputPythonFunctionOperator<RowData,RowData>

org.apache.flink.table.runtime.operators.python.aggregate.AbstractPythonStreamAggregateOperator

org.apache.flink.table.runtime.operators.python.aggregate.AbstractPythonStreamGroupAggregateOperator

All Implemented Interfaces:

Serializable, CheckpointListener, BoundedOneInput, Input<RowData>, KeyContext, KeyContextHandler, OneInputStreamOperator<RowData,RowData>, SetupableStreamOperator<RowData>, StreamOperator<RowData>, StreamOperatorStateHandler.CheckpointedStreamOperator, Triggerable<RowData,VoidNamespace>, YieldingOperator<RowData>, CleanupState

Direct Known Subclasses:

PythonStreamGroupAggregateOperator, PythonStreamGroupTableAggregateOperator

@Internal
public abstract class AbstractPythonStreamGroupAggregateOperator
extends AbstractPythonStreamAggregateOperator
implements Triggerable<RowData,VoidNamespace>, CleanupState

Base class for PythonStreamGroupAggregateOperator and PythonStreamGroupTableAggregateOperator.

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.flink.table.runtime.operators.python.aggregate.AbstractPythonStreamAggregateOperator

bais, baisWrapper, baos, baosWrapper, inputType, outputType, rowDataWrapper, userDefinedFunctionInputType, userDefinedFunctionOutputType

Fields inherited from class org.apache.flink.streaming.api.operators.python.process.AbstractExternalPythonFunctionOperator

pythonFunctionRunner

Fields inherited from class org.apache.flink.streaming.api.operators.python.AbstractPythonFunctionOperator

bundleFinishedCallback, config, elementCount, lastFinishBundleTime, maxBundleSize, systemEnvEnabled

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

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

Constructor Summary

Constructors

Constructor and Description
AbstractPythonStreamGroupAggregateOperator(Configuration config, RowType inputType, RowType outputType, PythonAggregateFunctionInfo[] aggregateFunctions, DataViewSpec[][] dataViewSpecs, int[] grouping, int indexOfCountStar, boolean generateUpdateBefore, long minRetentionTime, long maxRetentionTime)

Method Summary

Modifier and Type	Method and Description
RowType	createUserDefinedFunctionInputType()
RowType	createUserDefinedFunctionOutputType()
void	emitResult(Tuple3<String,byte[],Integer> resultTuple) Sends the execution result to the downstream operator.
protected FlinkFnApi.UserDefinedAggregateFunctions	getUserDefinedFunctionsProto() Gets the proto representation of the Python user-defined aggregate functions to be executed.
void	onEventTime(InternalTimer<RowData,VoidNamespace> timer) Invoked when an event-time timer fires.
void	onProcessingTime(InternalTimer<RowData,VoidNamespace> timer) Invoked when a processing-time timer fires.
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	processElementInternal(RowData value)

Methods inherited from class org.apache.flink.table.runtime.operators.python.aggregate.AbstractPythonStreamAggregateOperator

createInputCoderInfoDescriptor, createOutputCoderInfoDescriptor, createPythonFunctionRunner, getCurrentKey, getFunctionUrn, getKeyType, getPythonEnv, processElement, setCurrentKey

Methods inherited from class org.apache.flink.table.runtime.operators.python.AbstractOneInputPythonFunctionOperator

endInput

Methods inherited from class org.apache.flink.streaming.api.operators.python.process.AbstractExternalPythonFunctionOperator

close, createPythonEnvironmentManager, emitResults, invokeFinishBundle

Methods inherited from class org.apache.flink.streaming.api.operators.python.AbstractPythonFunctionOperator

checkInvokeFinishBundleByCount, finish, getConfiguration, getFlinkMetricContainer, isBundleFinished, prepareSnapshotPreBarrier, processWatermark

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

getChainingStrategy, getContainingTask, getExecutionConfig, getInternalTimerService, getKeyedStateBackend, getKeyedStateStore, getMetricGroup, getOperatorConfig, getOperatorID, getOperatorName, getOperatorStateBackend, getOrCreateKeyedState, getPartitionedState, getPartitionedState, getProcessingTimeService, getRuntimeContext, getStateKeySelector1, getStateKeySelector2, getTimeServiceManager, getUserCodeClassloader, hasKeyContext1, hasKeyContext2, initializeState, initializeState, isUsingCustomRawKeyedState, notifyCheckpointAborted, notifyCheckpointComplete, processLatencyMarker, processLatencyMarker1, processLatencyMarker2, processRecordAttributes, processRecordAttributes1, processRecordAttributes2, processWatermark1, processWatermark2, processWatermarkStatus, processWatermarkStatus1, processWatermarkStatus2, reportOrForwardLatencyMarker, setChainingStrategy, 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.table.runtime.functions.CleanupState

registerProcessingCleanupTimer

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

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.KeyContextHandler

hasKeyContext

Constructor Detail

AbstractPythonStreamGroupAggregateOperator

public AbstractPythonStreamGroupAggregateOperator(Configuration config,
                                                  RowType inputType,
                                                  RowType outputType,
                                                  PythonAggregateFunctionInfo[] aggregateFunctions,
                                                  DataViewSpec[][] dataViewSpecs,
                                                  int[] grouping,
                                                  int indexOfCountStar,
                                                  boolean generateUpdateBefore,
                                                  long minRetentionTime,
                                                  long maxRetentionTime)

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<RowData>

Overrides:

open in class AbstractPythonStreamAggregateOperator

Throws:

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

onEventTime

public void onEventTime(InternalTimer<RowData,VoidNamespace> timer)

Invoked when an event-time timer fires.

Specified by:

onEventTime in interface Triggerable<RowData,VoidNamespace>

onProcessingTime

public void onProcessingTime(InternalTimer<RowData,VoidNamespace> timer)
                      throws Exception

Invoked when a processing-time timer fires.

Specified by:

onProcessingTime in interface Triggerable<RowData,VoidNamespace>

Throws:

Exception

processElementInternal

public void processElementInternal(RowData value)
                            throws Exception

Specified by:

processElementInternal in class AbstractPythonStreamAggregateOperator

Throws:

Exception

emitResult

public void emitResult(Tuple3<String,byte[],Integer> resultTuple)
                throws Exception

Description copied from class: AbstractExternalPythonFunctionOperator

Sends the execution result to the downstream operator.

Specified by:

emitResult in class AbstractExternalPythonFunctionOperator<RowData>

Throws:

Exception

createUserDefinedFunctionInputType

public RowType createUserDefinedFunctionInputType()

Specified by:

createUserDefinedFunctionInputType in class AbstractPythonStreamAggregateOperator

createUserDefinedFunctionOutputType

public RowType createUserDefinedFunctionOutputType()

Specified by:

createUserDefinedFunctionOutputType in class AbstractPythonStreamAggregateOperator

getUserDefinedFunctionsProto

protected FlinkFnApi.UserDefinedAggregateFunctions getUserDefinedFunctionsProto()

Description copied from class: AbstractPythonStreamAggregateOperator

Gets the proto representation of the Python user-defined aggregate functions to be executed.

Overrides:

getUserDefinedFunctionsProto in class AbstractPythonStreamAggregateOperator