org.apache.drill.exec.physical.impl.join

Class MergeJoinBatch

java.lang.Object

org.apache.drill.exec.record.AbstractRecordBatch<MergeJoinPOP>

org.apache.drill.exec.physical.impl.join.MergeJoinBatch

All Implemented Interfaces:

AutoCloseable, Iterable<VectorWrapper<?>>, CloseableRecordBatch, RecordBatch, VectorAccessible

public class MergeJoinBatch
extends AbstractRecordBatch<MergeJoinPOP>

A join operator merges two sorted streams using record iterator.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.drill.exec.record.AbstractRecordBatch

AbstractRecordBatch.BatchState

Nested classes/interfaces inherited from interface org.apache.drill.exec.record.RecordBatch

RecordBatch.IterOutcome

Field Summary

Fields

Modifier and Type	Field and Description
MappingSet	compareMapping
MappingSet	compareRightMapping
MappingSet	copyLeftMapping
MappingSet	copyRightMappping
MappingSet	setupMapping

Fields inherited from class org.apache.drill.exec.record.AbstractRecordBatch

container, context, oContext, popConfig, state, stats, unionTypeEnabled

Fields inherited from interface org.apache.drill.exec.record.RecordBatch

MAX_BATCH_SIZE

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	MergeJoinBatch(MergeJoinPOP popConfig, FragmentContext context, RecordBatch left, RecordBatch right)

Method Summary

Methods

Modifier and Type	Method and Description
void	buildSchema()
void	close()
org.apache.calcite.rel.core.JoinRelType	getJoinType()
int	getRecordCount() Gets the number of records that are within this record.
RecordBatch.IterOutcome	innerNext()
protected void	killIncoming(boolean sendUpstream)

Methods inherited from class org.apache.drill.exec.record.AbstractRecordBatch

getContext, getOutgoingContainer, getPopConfig, getSchema, getSelectionVector2, getSelectionVector4, getValueAccessorById, getValueVectorId, getWritableBatch, iterator, kill, next, next, next

Methods inherited from class java.lang.Object

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

Field Detail

setupMapping

public final MappingSet setupMapping

copyLeftMapping

public final MappingSet copyLeftMapping

copyRightMappping

public final MappingSet copyRightMappping

compareMapping

public final MappingSet compareMapping

compareRightMapping

public final MappingSet compareRightMapping

Constructor Detail

MergeJoinBatch

protected MergeJoinBatch(MergeJoinPOP popConfig,
              FragmentContext context,
              RecordBatch left,
              RecordBatch right)
                  throws OutOfMemoryException

Throws:

OutOfMemoryException

Method Detail

getJoinType

public org.apache.calcite.rel.core.JoinRelType getJoinType()

getRecordCount

public int getRecordCount()

Description copied from interface: RecordBatch

Gets the number of records that are within this record.

Returns:

number of records

buildSchema

public void buildSchema()

Overrides:

buildSchema in class AbstractRecordBatch<MergeJoinPOP>

innerNext

public RecordBatch.IterOutcome innerNext()

Specified by:

innerNext in class AbstractRecordBatch<MergeJoinPOP>

close

public void close()

Specified by:

close in interface AutoCloseable

Overrides:

close in class AbstractRecordBatch<MergeJoinPOP>

killIncoming

protected void killIncoming(boolean sendUpstream)

Specified by:

killIncoming in class AbstractRecordBatch<MergeJoinPOP>