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

Class PythonScalarFunctionOperator

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.AbstractOneInputPythonFunctionOperator<IN,OUT>

org.apache.flink.table.runtime.operators.python.AbstractStatelessFunctionOperator<IN,OUT,UDFIN>

org.apache.flink.table.runtime.operators.python.scalar.AbstractPythonScalarFunctionOperator<org.apache.flink.table.runtime.types.CRow,org.apache.flink.table.runtime.types.CRow,org.apache.flink.types.Row>

org.apache.flink.table.runtime.operators.python.scalar.AbstractRowPythonScalarFunctionOperator

org.apache.flink.table.runtime.operators.python.scalar.PythonScalarFunctionOperator

All Implemented Interfaces:

Serializable, org.apache.flink.api.common.state.CheckpointListener, org.apache.flink.streaming.api.operators.BoundedOneInput, org.apache.flink.streaming.api.operators.Input<org.apache.flink.table.runtime.types.CRow>, org.apache.flink.streaming.api.operators.KeyContext, org.apache.flink.streaming.api.operators.OneInputStreamOperator<org.apache.flink.table.runtime.types.CRow,org.apache.flink.table.runtime.types.CRow>, org.apache.flink.streaming.api.operators.SetupableStreamOperator<org.apache.flink.table.runtime.types.CRow>, org.apache.flink.streaming.api.operators.StreamOperator<org.apache.flink.table.runtime.types.CRow>, org.apache.flink.streaming.api.operators.StreamOperatorStateHandler.CheckpointedStreamOperator, org.apache.flink.util.Disposable

@Internal
public class PythonScalarFunctionOperator
extends AbstractRowPythonScalarFunctionOperator

The Python ScalarFunction operator for the legacy planner.

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.flink.table.runtime.operators.python.scalar.AbstractRowPythonScalarFunctionOperator

cRowWrapper

Fields inherited from class org.apache.flink.table.runtime.operators.python.scalar.AbstractPythonScalarFunctionOperator

forwardedFields, scalarFunctions

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

bais, baisWrapper, baos, baosWrapper, forwardedInputQueue, inputType, outputType, userDefinedFunctionInputOffsets, userDefinedFunctionInputType, userDefinedFunctionOutputType

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

elementCount, maxBundleSize, pythonFunctionRunner

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

chainingStrategy, latencyStats, LOG, metrics, output, processingTimeService

Constructor Summary

Constructors

Constructor and Description
PythonScalarFunctionOperator(org.apache.flink.configuration.Configuration config, org.apache.flink.table.functions.python.PythonFunctionInfo[] scalarFunctions, org.apache.flink.table.types.logical.RowType inputType, org.apache.flink.table.types.logical.RowType outputType, int[] udfInputOffsets, int[] forwardedFields)

Method Summary

Modifier and Type	Method and Description
void	emitResult(org.apache.flink.api.java.tuple.Tuple2<byte[],Integer> resultTuple) Sends the execution result to the downstream operator.
void	open()
void	processElementInternal(org.apache.flink.table.runtime.types.CRow value)

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

bufferInput, getFunctionInput

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

getFunctionUrn, getInputOutputCoderUrn, getPythonEnv, getUserDefinedFunctionsProto

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

createPythonFunctionRunner, processElement

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

endInput

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

checkInvokeFinishBundleByCount, close, createPythonEnvironmentManager, dispose, emitResults, getConfig, getFlinkMetricContainer, getPythonConfig, invokeFinishBundle, isBundleFinished, prepareSnapshotPreBarrier, processWatermark, setCurrentKey, setPythonConfig

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

getChainingStrategy, getContainingTask, getCurrentKey, getExecutionConfig, getInternalTimerService, getKeyedStateBackend, getKeyedStateStore, getMetricGroup, getOperatorConfig, getOperatorID, getOperatorName, getOperatorStateBackend, getOrCreateKeyedState, getPartitionedState, getPartitionedState, getProcessingTimeService, getRuntimeContext, getTimeServiceManager, getUserCodeClassloader, initializeState, initializeState, isUsingCustomRawKeyedState, notifyCheckpointAborted, notifyCheckpointComplete, processLatencyMarker, processLatencyMarker1, processLatencyMarker2, processWatermark1, processWatermark2, reportOrForwardLatencyMarker, setChainingStrategy, setKeyContextElement1, setKeyContextElement2, setProcessingTimeService, setup, snapshotState, snapshotState

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.streaming.api.operators.OneInputStreamOperator

setKeyContextElement

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

close, dispose, getMetricGroup, 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.KeyContext

getCurrentKey, setCurrentKey

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

processLatencyMarker, processWatermark

Constructor Detail

PythonScalarFunctionOperator

public PythonScalarFunctionOperator(org.apache.flink.configuration.Configuration config,
                                    org.apache.flink.table.functions.python.PythonFunctionInfo[] scalarFunctions,
                                    org.apache.flink.table.types.logical.RowType inputType,
                                    org.apache.flink.table.types.logical.RowType outputType,
                                    int[] udfInputOffsets,
                                    int[] forwardedFields)

Method Detail

open

public void open()
          throws Exception

Specified by:

open in interface org.apache.flink.streaming.api.operators.StreamOperator<org.apache.flink.table.runtime.types.CRow>

Overrides:

open in class AbstractRowPythonScalarFunctionOperator

Throws:

Exception

processElementInternal

public void processElementInternal(org.apache.flink.table.runtime.types.CRow value)
                            throws Exception

Specified by:

processElementInternal in class AbstractStatelessFunctionOperator<org.apache.flink.table.runtime.types.CRow,org.apache.flink.table.runtime.types.CRow,org.apache.flink.types.Row>

Throws:

Exception

emitResult

public void emitResult(org.apache.flink.api.java.tuple.Tuple2<byte[],Integer> resultTuple)
                throws Exception

Description copied from class: AbstractPythonFunctionOperator

Sends the execution result to the downstream operator.

Specified by:

emitResult in class AbstractPythonFunctionOperator<org.apache.flink.table.runtime.types.CRow>

Throws:

Exception