Package org.apache.flink.table.runtime.operators.window

Class WindowTableFunctionOperator

java.lang.Object

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

org.apache.flink.table.runtime.operators.TableStreamOperator<org.apache.flink.table.data.RowData>

org.apache.flink.table.runtime.operators.window.WindowTableFunctionOperator

All Implemented Interfaces:

Serializable, org.apache.flink.api.common.state.CheckpointListener, org.apache.flink.streaming.api.operators.Input<org.apache.flink.table.data.RowData>, org.apache.flink.streaming.api.operators.KeyContext, org.apache.flink.streaming.api.operators.KeyContextHandler, org.apache.flink.streaming.api.operators.OneInputStreamOperator<org.apache.flink.table.data.RowData,org.apache.flink.table.data.RowData>, org.apache.flink.streaming.api.operators.SetupableStreamOperator<org.apache.flink.table.data.RowData>, org.apache.flink.streaming.api.operators.StreamOperator<org.apache.flink.table.data.RowData>, org.apache.flink.streaming.api.operators.StreamOperatorStateHandler.CheckpointedStreamOperator

public class WindowTableFunctionOperator
extends TableStreamOperator<org.apache.flink.table.data.RowData>
implements org.apache.flink.streaming.api.operators.OneInputStreamOperator<org.apache.flink.table.data.RowData,org.apache.flink.table.data.RowData>

The operator acts as a table-valued function to assign windows for input row. Output row includes the original columns as well additional 3 columns named window_start, window_end, window_time to indicate the assigned window.

Note: The operator only applies for Window TVF with row semantics (e.g TUMBLE/HOP/CUMULATE) instead of set semantics (e.g Session).

The operator emits result per record instead of at the end of window.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.flink.table.runtime.operators.TableStreamOperator

TableStreamOperator.ContextImpl

Field Summary

Fields inherited from class org.apache.flink.table.runtime.operators.TableStreamOperator

ctx, currentWatermark

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

chainingStrategy, config, latencyStats, LOG, metrics, output, processingTimeService

Constructor Summary

Constructors

Constructor	Description
WindowTableFunctionOperator(WindowAssigner<TimeWindow> windowAssigner, int rowtimeIndex, java.time.ZoneId shiftTimeZone)

Method Summary

Modifier and Type	Method	Description
void	open()
void	processElement(org.apache.flink.streaming.runtime.streamrecord.StreamRecord<org.apache.flink.table.data.RowData> element)

Methods inherited from class org.apache.flink.table.runtime.operators.TableStreamOperator

computeMemorySize, processWatermark

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

close, finish, getChainingStrategy, getContainingTask, getCurrentKey, getExecutionConfig, getInternalTimerService, getKeyedStateBackend, getKeyedStateStore, getMetricGroup, getOperatorConfig, getOperatorID, getOperatorName, getOperatorStateBackend, getOrCreateKeyedState, getPartitionedState, getPartitionedState, getProcessingTimeService, getRuntimeContext, getTimeServiceManager, getUserCodeClassloader, hasKeyContext1, hasKeyContext2, initializeState, initializeState, isUsingCustomRawKeyedState, notifyCheckpointAborted, notifyCheckpointComplete, prepareSnapshotPreBarrier, processLatencyMarker, processLatencyMarker1, processLatencyMarker2, processWatermark1, processWatermark2, processWatermarkStatus, processWatermarkStatus1, processWatermarkStatus2, reportOrForwardLatencyMarker, setChainingStrategy, setCurrentKey, 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.api.common.state.CheckpointListener

notifyCheckpointAborted, notifyCheckpointComplete

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

processLatencyMarker, 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, getOperatorID, initializeState, prepareSnapshotPreBarrier, setKeyContextElement1, setKeyContextElement2, snapshotState

Constructor Detail

WindowTableFunctionOperator

public WindowTableFunctionOperator(WindowAssigner<TimeWindow> windowAssigner,
                                   int rowtimeIndex,
                                   java.time.ZoneId shiftTimeZone)

Method Detail

open

public void open()
          throws Exception

Specified by:

open in interface org.apache.flink.streaming.api.operators.StreamOperator<org.apache.flink.table.data.RowData>

Overrides:

open in class TableStreamOperator<org.apache.flink.table.data.RowData>

Throws:

Exception

processElement

public void processElement(org.apache.flink.streaming.runtime.streamrecord.StreamRecord<org.apache.flink.table.data.RowData> element)
                    throws Exception

Specified by:

processElement in interface org.apache.flink.streaming.api.operators.Input<org.apache.flink.table.data.RowData>

Throws:

Exception