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

Class RowTimeRowsBoundedPrecedingFunction<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.RowTimeRowsBoundedPrecedingFunction<K>

All Implemented Interfaces:

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

public class RowTimeRowsBoundedPrecedingFunction<K>
extends KeyedProcessFunctionWithCleanupState<K,org.apache.flink.table.data.RowData,org.apache.flink.table.data.RowData>

Process Function for ROWS clause event-time bounded OVER window.

E.g.: SELECT rowtime, b, c, min(c) OVER (PARTITION BY b ORDER BY rowtime ROWS BETWEEN 2 PRECEDING AND CURRENT ROW), max(c) OVER (PARTITION BY b ORDER BY rowtime ROWS BETWEEN 2 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.functions.KeyedProcessFunctionWithCleanupState

stateCleaningEnabled

Constructor Summary

Constructors

Constructor and Description
RowTimeRowsBoundedPrecedingFunction(long minRetentionTime, long maxRetentionTime, GeneratedAggsHandleFunction genAggsHandler, org.apache.flink.table.types.logical.LogicalType[] accTypes, org.apache.flink.table.types.logical.LogicalType[] inputFieldTypes, long precedingOffset, int rowTimeIdx)

Method Summary

Modifier and Type	Method and Description
void	close()
protected org.apache.flink.metrics.Counter	getCounter()
void	onTimer(long timestamp, org.apache.flink.streaming.api.functions.KeyedProcessFunction.OnTimerContext ctx, org.apache.flink.util.Collector<org.apache.flink.table.data.RowData> out)
void	open(org.apache.flink.api.common.functions.OpenContext openContext)
void	processElement(org.apache.flink.table.data.RowData input, org.apache.flink.streaming.api.functions.KeyedProcessFunction.Context ctx, org.apache.flink.util.Collector<org.apache.flink.table.data.RowData> out)

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, open, 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

RowTimeRowsBoundedPrecedingFunction

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

Method Detail

getCounter

@VisibleForTesting
protected org.apache.flink.metrics.Counter getCounter()

open

public void open(org.apache.flink.api.common.functions.OpenContext openContext)
          throws Exception

Throws:

Exception

processElement

public void processElement(org.apache.flink.table.data.RowData input,
                           org.apache.flink.streaming.api.functions.KeyedProcessFunction.Context ctx,
                           org.apache.flink.util.Collector<org.apache.flink.table.data.RowData> out)
                    throws Exception

Specified by:

processElement in class org.apache.flink.streaming.api.functions.KeyedProcessFunction<K,org.apache.flink.table.data.RowData,org.apache.flink.table.data.RowData>

Throws:

Exception

onTimer

public void onTimer(long timestamp,
                    org.apache.flink.streaming.api.functions.KeyedProcessFunction.OnTimerContext ctx,
                    org.apache.flink.util.Collector<org.apache.flink.table.data.RowData> out)
             throws Exception

Overrides:

onTimer in class org.apache.flink.streaming.api.functions.KeyedProcessFunction<K,org.apache.flink.table.data.RowData,org.apache.flink.table.data.RowData>

Throws:

Exception

close

public void close()
           throws Exception

Specified by:

close in interface org.apache.flink.api.common.functions.RichFunction

Overrides:

close in class org.apache.flink.api.common.functions.AbstractRichFunction

Throws:

Exception