org.apache.flink.table.runtime.operators.over

Class RowTimeRangeUnboundedPrecedingFunction<K>

java.lang.Object

org.apache.flink.api.common.functions.AbstractRichFunction

org.apache.flink.streaming.api.functions.KeyedProcessFunction<K,IN,OUT>

org.apache.flink.table.runtime.functions.KeyedProcessFunctionWithCleanupState<K,RowData,RowData>

org.apache.flink.table.runtime.operators.over.AbstractRowTimeUnboundedPrecedingOver<K>

org.apache.flink.table.runtime.operators.over.RowTimeRangeUnboundedPrecedingFunction<K>

All Implemented Interfaces:

Serializable, Function, RichFunction, CleanupState

public class RowTimeRangeUnboundedPrecedingFunction<K>
extends AbstractRowTimeUnboundedPrecedingOver<K>

A ProcessFunction to support unbounded RANGE window. The RANGE option includes all the rows within the window frame that have the same ORDER BY values as the current row.

E.g.: SELECT rowtime, b, c, min(c) OVER (PARTITION BY b ORDER BY rowtime RANGE BETWEEN UNBOUNDED preceding AND CURRENT ROW), max(c) OVER (PARTITION BY b ORDER BY rowtime RANGE BETWEEN UNBOUNDED preceding AND CURRENT ROW) FROM T.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.flink.streaming.api.functions.KeyedProcessFunction

KeyedProcessFunction.Context, KeyedProcessFunction.OnTimerContext

Field Summary

Fields inherited from class org.apache.flink.table.runtime.operators.over.AbstractRowTimeUnboundedPrecedingOver

function, output

Fields inherited from class org.apache.flink.table.runtime.functions.KeyedProcessFunctionWithCleanupState

stateCleaningEnabled

Constructor Summary

Constructors

Constructor and Description
RowTimeRangeUnboundedPrecedingFunction(long minRetentionTime, long maxRetentionTime, GeneratedAggsHandleFunction genAggsHandler, LogicalType[] accTypes, LogicalType[] inputFieldTypes, int rowTimeIdx)

Method Summary

Modifier and Type	Method and Description
void	processElementsWithSameTimestamp(List<RowData> curRowList, Collector<RowData> out) Process the same timestamp datas, the mechanism is different between rows and range window.

Methods inherited from class org.apache.flink.table.runtime.operators.over.AbstractRowTimeUnboundedPrecedingOver

close, getCounter, onTimer, open, processElement

Methods inherited from class org.apache.flink.table.runtime.functions.KeyedProcessFunctionWithCleanupState

cleanupState, initCleanupTimeState, isProcessingTimeTimer, needToCleanupState, registerProcessingCleanupTimer

Methods inherited from class org.apache.flink.api.common.functions.AbstractRichFunction

getIterationRuntimeContext, getRuntimeContext, setRuntimeContext

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

Constructor Detail

RowTimeRangeUnboundedPrecedingFunction

public RowTimeRangeUnboundedPrecedingFunction(long minRetentionTime,
                                              long maxRetentionTime,
                                              GeneratedAggsHandleFunction genAggsHandler,
                                              LogicalType[] accTypes,
                                              LogicalType[] inputFieldTypes,
                                              int rowTimeIdx)

Method Detail

processElementsWithSameTimestamp

public void processElementsWithSameTimestamp(List<RowData> curRowList,
                                             Collector<RowData> out)
                                      throws Exception

Description copied from class: AbstractRowTimeUnboundedPrecedingOver

Process the same timestamp datas, the mechanism is different between rows and range window.

Specified by:

processElementsWithSameTimestamp in class AbstractRowTimeUnboundedPrecedingOver<K>

Throws:

Exception