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

Class RowTimeRowsUnboundedPrecedingFunction<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,org.apache.flink.table.data.RowData,org.apache.flink.table.data.RowData>

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

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

All Implemented Interfaces:

Serializable, org.apache.flink.api.common.functions.Function, org.apache.flink.api.common.functions.RichFunction, CleanupState

public class RowTimeRowsUnboundedPrecedingFunction<K>
extends AbstractRowTimeUnboundedPrecedingOver<K>

A ProcessFunction to support unbounded ROWS window. The ROWS clause defines on a physical level how many rows are included in a window frame.

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

org.apache.flink.streaming.api.functions.KeyedProcessFunction.Context, org.apache.flink.streaming.api.functions.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	Description
RowTimeRowsUnboundedPrecedingFunction(long minRetentionTime, long maxRetentionTime, GeneratedAggsHandleFunction genAggsHandler, org.apache.flink.table.types.logical.LogicalType[] accTypes, org.apache.flink.table.types.logical.LogicalType[] inputFieldTypes, int rowTimeIdx)

Method Summary

Modifier and Type	Method	Description
void	processElementsWithSameTimestamp(List<org.apache.flink.table.data.RowData> curRowList, org.apache.flink.util.Collector<org.apache.flink.table.data.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 Details

RowTimeRowsUnboundedPrecedingFunction

public RowTimeRowsUnboundedPrecedingFunction(long minRetentionTime,
 long maxRetentionTime,
 GeneratedAggsHandleFunction genAggsHandler,
 org.apache.flink.table.types.logical.LogicalType[] accTypes,
 org.apache.flink.table.types.logical.LogicalType[] inputFieldTypes,
 int rowTimeIdx)

Method Details

processElementsWithSameTimestamp

public void processElementsWithSameTimestamp(List<org.apache.flink.table.data.RowData> curRowList,
 org.apache.flink.util.Collector<org.apache.flink.table.data.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