Package org.apache.pinot.segment.local.aggregator

Class ValueAggregatorFactory

java.lang.Object

org.apache.pinot.segment.local.aggregator.ValueAggregatorFactory

public class ValueAggregatorFactory
extends Object

The ValueAggregatorFactory class is the factory for all value aggregators.

Method Summary

Modifier and Type	Method	Description
static FieldSpec.DataType	getAggregatedValueType(AggregationFunctionType aggregationType)	Returns the data type of the aggregated value for the given aggregation type.
static ValueAggregator	getValueAggregator(AggregationFunctionType aggregationType, List<ExpressionContext> arguments)	Returns a new instance of value aggregator for the given aggregation type.

Methods inherited from class java.lang.Object

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

Method Detail

getValueAggregator

public static ValueAggregator getValueAggregator(AggregationFunctionType aggregationType,
                                                 List<ExpressionContext> arguments)

Returns a new instance of value aggregator for the given aggregation type.

Parameters:

aggregationType - Aggregation type

Returns:

Value aggregator

getAggregatedValueType

public static FieldSpec.DataType getAggregatedValueType(AggregationFunctionType aggregationType)

Returns the data type of the aggregated value for the given aggregation type.

Parameters:

aggregationType - Aggregation type

Returns:

Data type of the aggregated value