org.apache.solr.analytics.function

Interface ReductionFunction

All Superinterfaces:

AnalyticsValue, AnalyticsValueStream

All Known Implementing Classes:

CountFunction, DocCountFunction, MeanFunction, MissingFunction, SumFunction, UniqueFunction

public interface ReductionFunction
extends AnalyticsValue

A function that reduces the values of a mapping expression, field or constant.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.solr.analytics.value.AnalyticsValue

AnalyticsValue.AbstractAnalyticsValue

Nested classes/interfaces inherited from interface org.apache.solr.analytics.value.AnalyticsValueStream

AnalyticsValueStream.AbstractAnalyticsValueStream, AnalyticsValueStream.ExpressionType

Method Summary

Modifier and Type	Method and Description
void	synchronizeDataCollectors(UnaryOperator<ReductionDataCollector<?>> sync) Syncs the data collectors with shared versions across the entire Analytics Request so that as little data as possible is sent across shards.

Methods inherited from interface org.apache.solr.analytics.value.AnalyticsValue

exists, getObject

Methods inherited from interface org.apache.solr.analytics.value.AnalyticsValueStream

convertToConstant, createExpressionString, determineMappingPhase, getExpressionStr, getExpressionType, getName, streamObjects

Method Detail

synchronizeDataCollectors

void synchronizeDataCollectors(UnaryOperator<ReductionDataCollector<?>> sync)

Syncs the data collectors with shared versions across the entire Analytics Request so that as little data as possible is sent across shards.

Parameters:

sync - a function that takes in a ReductionDataCollector and returns a shared version