Package org.apache.pinot.query.runtime.operator

Class SetOperator

java.lang.Object

org.apache.pinot.query.runtime.operator.MultiStageOperator

org.apache.pinot.query.runtime.operator.SetOperator

All Implemented Interfaces:

AutoCloseable, Operator<TransferableBlock>

Direct Known Subclasses:

IntersectOperator, MinusOperator, UnionOperator

public abstract class SetOperator
extends MultiStageOperator

Set operator, which supports UNION, INTERSECT and EXCEPT. This has two child operators, and the left child operator is the one that is used to construct the result. The right child operator is used to construct a set of rows that are used to filter the left child operator. The right child operator is consumed in a blocking manner, and the left child operator is consumed in a non-blocking UnionOperator: The right child operator is consumed in a blocking manner.

Field Summary

Fields

Modifier and Type	Field	Description
protected Set<Record>	_rightRowSet

Fields inherited from class org.apache.pinot.query.runtime.operator.MultiStageOperator

_context, _opChainStats, _operatorId

Constructor Summary

Constructors

Constructor	Description
SetOperator(OpChainExecutionContext opChainExecutionContext, List<MultiStageOperator> upstreamOperators, DataSchema dataSchema)

Method Summary

Modifier and Type	Method	Description
protected TransferableBlock	constructResultBlockSet(TransferableBlock leftBlock)
protected void	constructRightBlockSet()
void	explainPlan(ExplainPlanRows explainPlanRows, int[] globalId, int parentId)
List<MultiStageOperator>	getChildOperators()
ExecutionStatistics	getExecutionStatistics()
org.apache.pinot.segment.spi.IndexSegment	getIndexSegment()
protected TransferableBlock	getNextBlock()
protected abstract boolean	handleRowMatched(Object[] row)	Returns true if the row is matched.
void	prepareForExplainPlan(ExplainPlanRows explainPlanRows)

Methods inherited from class org.apache.pinot.query.runtime.operator.MultiStageOperator

cancel, close, getOperatorId, nextBlock, shouldCollectStats

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.pinot.core.common.Operator

toExplainString

Field Detail

_rightRowSet

protected final Set<Record> _rightRowSet

Constructor Detail

SetOperator

public SetOperator(OpChainExecutionContext opChainExecutionContext,
                   List<MultiStageOperator> upstreamOperators,
                   DataSchema dataSchema)

Method Detail

getChildOperators

public List<MultiStageOperator> getChildOperators()

Specified by:

getChildOperators in interface Operator<TransferableBlock>

Overrides:

getChildOperators in class MultiStageOperator

prepareForExplainPlan

public void prepareForExplainPlan(ExplainPlanRows explainPlanRows)

explainPlan

public void explainPlan(ExplainPlanRows explainPlanRows,
                        int[] globalId,
                        int parentId)

getIndexSegment

public org.apache.pinot.segment.spi.IndexSegment getIndexSegment()

getExecutionStatistics

public ExecutionStatistics getExecutionStatistics()

getNextBlock

protected TransferableBlock getNextBlock()

Specified by:

getNextBlock in class MultiStageOperator

constructRightBlockSet

protected void constructRightBlockSet()

constructResultBlockSet

protected TransferableBlock constructResultBlockSet(TransferableBlock leftBlock)

handleRowMatched

protected abstract boolean handleRowMatched(Object[] row)

Returns true if the row is matched. Also updates the right row set based on the Operator.

Parameters:

row -

Returns:

true if the row is matched.