Package org.apache.lucene.misc.search

Class DocValuesStatsCollectorManager<T,S extends DocValuesStats<T>>

java.lang.Object

org.apache.lucene.misc.search.DocValuesStatsCollectorManager<T,S>

Type Parameters:

T - the type of the DocValues field value

S - the type of DocValuesStats

All Implemented Interfaces:

CollectorManager<DocValuesStatsCollector,S>

public class DocValuesStatsCollectorManager<T,S extends DocValuesStats<T>>
extends Object
implements CollectorManager<DocValuesStatsCollector,S>

A CollectorManager implementation for DocValuesStatsCollector.

Example usage:

 IndexSearcher searcher = ...; // your IndexSearcher
 DocValuesStatsCollectorManager<Long, DocValuesStats.LongDocValuesStats> manager =
     new DocValuesStatsCollectorManager<>(() -> new DocValuesStats.LongDocValuesStats("price"));
 DocValuesStats.LongDocValuesStats stats = searcher.search(new MatchAllDocsQuery(), manager);
 

Constructor Summary

Constructors

Constructor	Description
DocValuesStatsCollectorManager(Supplier<S> statsSupplier)	Creates a new DocValuesStatsCollectorManager.

Method Summary

Modifier and Type	Method	Description
DocValuesStatsCollector	newCollector()
S	reduce(Collection<DocValuesStatsCollector> collectors)

Methods inherited from class java.lang.Object

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

Constructor Details

DocValuesStatsCollectorManager

public DocValuesStatsCollectorManager(Supplier<S> statsSupplier)

Creates a new DocValuesStatsCollectorManager.

Parameters:

statsSupplier - a supplier that creates new stats instances for each collector

Method Details

newCollector

public DocValuesStatsCollector newCollector()
                                     throws IOException

Specified by:

newCollector in interface CollectorManager<T,S extends DocValuesStats<T>>

Throws:

IOException

reduce

public S reduce(Collection<DocValuesStatsCollector> collectors)
         throws IOException

Specified by:

reduce in interface CollectorManager<T,S extends DocValuesStats<T>>

Throws:

IOException