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

Class UnionOperator

java.lang.Object

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

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

org.apache.pinot.query.runtime.operator.UnionOperator

All Implemented Interfaces:

AutoCloseable, Operator<TransferableBlock>

public class UnionOperator
extends SetOperator

Union operator for UNION ALL queries.

Field Summary

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

_rightRowSet

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

_context, _opChainStats, _operatorId

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method	Description
protected TransferableBlock	getNextBlock()
protected boolean	handleRowMatched(Object[] row)	Returns true if the row is matched.
String	toExplainString()

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

constructResultBlockSet, constructRightBlockSet, explainPlan, getChildOperators, getExecutionStatistics, getIndexSegment, prepareForExplainPlan

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

Constructor Detail

UnionOperator

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

Method Detail

toExplainString

@Nullable
public String toExplainString()

getNextBlock

protected TransferableBlock getNextBlock()

Overrides:

getNextBlock in class SetOperator

handleRowMatched

protected boolean handleRowMatched(Object[] row)

Description copied from class: SetOperator

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

Specified by:

handleRowMatched in class SetOperator

Returns:

true if the row is matched.