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

Class MultistageAggregationExecutor

java.lang.Object

org.apache.pinot.query.runtime.operator.MultistageAggregationExecutor

public class MultistageAggregationExecutor
extends Object

Class that executes all aggregation functions (without group-bys) for the multistage AggregateOperator.

Constructor Summary

Constructors

Constructor	Description
MultistageAggregationExecutor(AggregationFunction[] aggFunctions, int[] filterArgIndices, AggregateNode.AggType aggType, Map<String,Integer> colNameToIndexMap, DataSchema resultSchema)

Method Summary

Modifier and Type	Method	Description
Object[]	constructEmptyAggResultRow()
List<Object[]>	getResult()	Fetches the result.
void	processBlock(TransferableBlock block, DataSchema inputDataSchema)	Performs aggregation for the data in the block.

Methods inherited from class java.lang.Object

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

Constructor Detail

MultistageAggregationExecutor

public MultistageAggregationExecutor(AggregationFunction[] aggFunctions,
                                     @Nullable
                                     int[] filterArgIndices,
                                     AggregateNode.AggType aggType,
                                     Map<String,Integer> colNameToIndexMap,
                                     DataSchema resultSchema)

Method Detail

processBlock

public void processBlock(TransferableBlock block,
                         DataSchema inputDataSchema)

Performs aggregation for the data in the block.

constructEmptyAggResultRow

public Object[] constructEmptyAggResultRow()

Returns:

an empty agg result block for non-group-by aggregation.

getResult

public List<Object[]> getResult()

Fetches the result.