org.apache.lucene.search

Class DocValuesStatsCollector

java.lang.Object

org.apache.lucene.search.DocValuesStatsCollector

All Implemented Interfaces:

Collector

public class DocValuesStatsCollector
extends java.lang.Object
implements Collector

A Collector which computes statistics for a DocValues field.

Constructor Summary

Constructors

Constructor and Description
DocValuesStatsCollector(DocValuesStats<?> stats) Creates a collector to compute statistics for a DocValues field using the given stats.

Method Summary

Modifier and Type	Method and Description
LeafCollector	getLeafCollector(LeafReaderContext context) Create a new collector to collect the given context.
boolean	needsScores() Indicates if document scores are needed by this collector.

Methods inherited from class java.lang.Object

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

Constructor Detail

DocValuesStatsCollector

public DocValuesStatsCollector(DocValuesStats<?> stats)

Creates a collector to compute statistics for a DocValues field using the given stats.

Method Detail

getLeafCollector

public LeafCollector getLeafCollector(LeafReaderContext context)
                               throws java.io.IOException

Description copied from interface: Collector

Create a new collector to collect the given context.

Specified by:

getLeafCollector in interface Collector

Parameters:

context - next atomic reader context

Throws:

java.io.IOException

needsScores

public boolean needsScores()

Description copied from interface: Collector

Indicates if document scores are needed by this collector.

Specified by:

needsScores in interface Collector

Returns:

true if scores are needed.