org.apache.flink.table.runtime.operators.rank

Class RetractableTopNFunction

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<BaseRow,BaseRow,BaseRow>

org.apache.flink.table.runtime.operators.rank.AbstractTopNFunction

org.apache.flink.table.runtime.operators.rank.RetractableTopNFunction

All Implemented Interfaces:

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

public class RetractableTopNFunction
extends AbstractTopNFunction

The function could handle retract stream. Input stream could only contain acc, delete or retract record.

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.rank.AbstractTopNFunction

hitCount, inputRowType, keyContext, outputRankNumber, rankEnd, requestCount, sortKeyComparator, sortKeySelector

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

stateCleaningEnabled

Constructor Summary

Constructors

Constructor and Description
RetractableTopNFunction(long minRetentionTime, long maxRetentionTime, BaseRowTypeInfo inputRowType, GeneratedRecordComparator generatedRecordComparator, BaseRowKeySelector sortKeySelector, RankType rankType, RankRange rankRange, GeneratedRecordEqualiser generatedEqualiser, boolean generateRetraction, boolean outputRankNumber)

Method Summary

Modifier and Type	Method and Description
void	onTimer(long timestamp, org.apache.flink.streaming.api.functions.KeyedProcessFunction.OnTimerContext ctx, org.apache.flink.util.Collector<BaseRow> out)
void	open(org.apache.flink.configuration.Configuration parameters)
void	processElement(BaseRow input, org.apache.flink.streaming.api.functions.KeyedProcessFunction.Context ctx, org.apache.flink.util.Collector<BaseRow> out)

Methods inherited from class org.apache.flink.table.runtime.operators.rank.AbstractTopNFunction

checkSortKeyInBufferRange, collect, collect, delete, delete, getDefaultTopNSize, hasOffset, initRankEnd, isInRankEnd, isInRankRange, registerMetric, retract, setKeyContext

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

close, 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

RetractableTopNFunction

public RetractableTopNFunction(long minRetentionTime,
                               long maxRetentionTime,
                               BaseRowTypeInfo inputRowType,
                               GeneratedRecordComparator generatedRecordComparator,
                               BaseRowKeySelector sortKeySelector,
                               RankType rankType,
                               RankRange rankRange,
                               GeneratedRecordEqualiser generatedEqualiser,
                               boolean generateRetraction,
                               boolean outputRankNumber)

Method Detail

open

public void open(org.apache.flink.configuration.Configuration parameters)
          throws Exception

Specified by:

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

Overrides:

open in class AbstractTopNFunction

Throws:

Exception

processElement

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

Specified by:

processElement in class org.apache.flink.streaming.api.functions.KeyedProcessFunction<BaseRow,BaseRow,BaseRow>

Throws:

Exception

onTimer

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

Overrides:

onTimer in class org.apache.flink.streaming.api.functions.KeyedProcessFunction<BaseRow,BaseRow,BaseRow>

Throws:

Exception