org.apache.flink.table.runtime.operators.join.lookup

Class LookupJoinRunner

java.lang.Object

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

org.apache.flink.streaming.api.functions.ProcessFunction<org.apache.flink.table.data.RowData,org.apache.flink.table.data.RowData>

org.apache.flink.table.runtime.operators.join.lookup.LookupJoinRunner

All Implemented Interfaces:

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

Direct Known Subclasses:

LookupJoinWithCalcRunner

public class LookupJoinRunner
extends org.apache.flink.streaming.api.functions.ProcessFunction<org.apache.flink.table.data.RowData,org.apache.flink.table.data.RowData>

The join runner to lookup the dimension table.

See Also:

Serialized Form

Nested Class Summary

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

org.apache.flink.streaming.api.functions.ProcessFunction.Context, org.apache.flink.streaming.api.functions.ProcessFunction.OnTimerContext

Field Summary

Fields

Modifier and Type	Field and Description
protected ListenableCollector<org.apache.flink.table.data.RowData>	collector
protected boolean	isLeftOuterJoin
protected org.apache.flink.table.data.GenericRowData	nullRow
protected org.apache.flink.table.data.utils.JoinedRowData	outRow
protected FilterCondition	preFilterCondition
protected int	tableFieldsCount

Constructor Summary

Constructors

Constructor and Description
LookupJoinRunner(GeneratedFunction<org.apache.flink.api.common.functions.FlatMapFunction<org.apache.flink.table.data.RowData,org.apache.flink.table.data.RowData>> generatedFetcher, GeneratedCollector<ListenableCollector<org.apache.flink.table.data.RowData>> generatedCollector, GeneratedFunction<FilterCondition> generatedPreFilterCondition, boolean isLeftOuterJoin, int tableFieldsCount)

Method Summary

Modifier and Type	Method and Description
void	close()
void	doFetch(org.apache.flink.table.data.RowData in)
org.apache.flink.util.Collector<org.apache.flink.table.data.RowData>	getFetcherCollector()
void	open(org.apache.flink.api.common.functions.OpenContext openContext)
void	padNullForLeftJoin(org.apache.flink.table.data.RowData in, org.apache.flink.util.Collector<org.apache.flink.table.data.RowData> out)
boolean	preFilter(org.apache.flink.table.data.RowData in)
void	prepareCollector(org.apache.flink.table.data.RowData in, org.apache.flink.util.Collector<org.apache.flink.table.data.RowData> out)
void	processElement(org.apache.flink.table.data.RowData in, org.apache.flink.streaming.api.functions.ProcessFunction.Context ctx, org.apache.flink.util.Collector<org.apache.flink.table.data.RowData> out)

Methods inherited from class org.apache.flink.streaming.api.functions.ProcessFunction

onTimer

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

Field Detail

isLeftOuterJoin

protected final boolean isLeftOuterJoin

tableFieldsCount

protected final int tableFieldsCount

collector

protected transient ListenableCollector<org.apache.flink.table.data.RowData> collector

outRow

protected transient org.apache.flink.table.data.utils.JoinedRowData outRow

preFilterCondition

protected transient FilterCondition preFilterCondition

nullRow

protected transient org.apache.flink.table.data.GenericRowData nullRow

Constructor Detail

LookupJoinRunner

public LookupJoinRunner(GeneratedFunction<org.apache.flink.api.common.functions.FlatMapFunction<org.apache.flink.table.data.RowData,org.apache.flink.table.data.RowData>> generatedFetcher,
                        GeneratedCollector<ListenableCollector<org.apache.flink.table.data.RowData>> generatedCollector,
                        GeneratedFunction<FilterCondition> generatedPreFilterCondition,
                        boolean isLeftOuterJoin,
                        int tableFieldsCount)

Method Detail

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 in,
                           org.apache.flink.streaming.api.functions.ProcessFunction.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.ProcessFunction<org.apache.flink.table.data.RowData,org.apache.flink.table.data.RowData>

Throws:

Exception

prepareCollector

public void prepareCollector(org.apache.flink.table.data.RowData in,
                             org.apache.flink.util.Collector<org.apache.flink.table.data.RowData> out)

preFilter

public boolean preFilter(org.apache.flink.table.data.RowData in)
                  throws Exception

Throws:

Exception

doFetch

public void doFetch(org.apache.flink.table.data.RowData in)
             throws Exception

Throws:

Exception

padNullForLeftJoin

public void padNullForLeftJoin(org.apache.flink.table.data.RowData in,
                               org.apache.flink.util.Collector<org.apache.flink.table.data.RowData> out)

getFetcherCollector

public org.apache.flink.util.Collector<org.apache.flink.table.data.RowData> getFetcherCollector()

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