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

Class AbstractStreamingJoinOperator.OuterRecord

java.lang.Object

org.apache.flink.table.runtime.operators.join.stream.AbstractStreamingJoinOperator.OuterRecord

Enclosing class:

AbstractStreamingJoinOperator

protected static final class AbstractStreamingJoinOperator.OuterRecord
extends Object

An AbstractStreamingJoinOperator.OuterRecord is a composite of record and numOfAssociations. The numOfAssociations represents the number of associated records in the other side. It is used when the record is from outer side (e.g. left side in LEFT OUTER JOIN). When the numOfAssociations is ZERO, we need to send a null padding row. This is useful to avoid recompute the associated numbers every time.

When the record is from inner side (e.g. right side in LEFT OUTER JOIN), the numOfAssociations will always be -1.

Field Summary

Fields

Modifier and Type	Field and Description
int	numOfAssociations
RowData	record

Method Summary

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

record

public final RowData record

numOfAssociations

public final int numOfAssociations