Package org.apache.lucene.search

Class TotalHitCountCollector

java.lang.Object

org.apache.lucene.search.TotalHitCountCollector

All Implemented Interfaces:

Collector

public class TotalHitCountCollector
extends Object
implements Collector

Just counts the total number of hits. This is the collector behind IndexSearcher.count(org.apache.lucene.search.Query). When the Weight implements Weight.count(org.apache.lucene.index.LeafReaderContext), this collector will skip collecting segments.

Constructor Summary

Constructors

Constructor	Description
TotalHitCountCollector()

Method Summary

Modifier and Type	Method	Description
LeafCollector	getLeafCollector(LeafReaderContext context)	Create a new collector to collect the given context.
int	getTotalHits()	Returns how many hits matched the search.
ScoreMode	scoreMode()	Indicates what features are required from the scorer.
void	setWeight(Weight weight)	Set the Weight that will be used to produce scorers that will feed LeafCollectors.

Methods inherited from class java.lang.Object

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

Constructor Detail

TotalHitCountCollector

public TotalHitCountCollector()

Method Detail

getTotalHits

public int getTotalHits()

Returns how many hits matched the search.

scoreMode

public ScoreMode scoreMode()

Description copied from interface: Collector

Indicates what features are required from the scorer.

Specified by:

scoreMode in interface Collector

setWeight

public void setWeight(Weight weight)

Description copied from interface: Collector

Set the Weight that will be used to produce scorers that will feed LeafCollectors. This is typically useful to have access to Weight.count(org.apache.lucene.index.LeafReaderContext) from Collector.getLeafCollector(org.apache.lucene.index.LeafReaderContext).

Specified by:

setWeight in interface Collector

getLeafCollector

public LeafCollector getLeafCollector(LeafReaderContext context)
                               throws 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:

IOException