Uses of Interface
org.apache.lucene.search.Collector

Packages that use Collector

Package	Description
org.apache.lucene.search	Code to search indices.

Uses of Collector in org.apache.lucene.search

Classes in org.apache.lucene.search with type parameters of type Collector

Modifier and Type	Class	Description
class	CachingCollectorManager<C extends Collector,R>	A CollectorManager that wraps a delegate CollectorManager and caches all collected documents (and optionally scores) per slice, so they can be replayed to a second-pass CollectorManager without re-running the query.
interface	CollectorManager<C extends Collector,T>	A manager of collectors.

Classes in org.apache.lucene.search that implement Collector

Modifier and Type	Class	Description
class	CachingCollector	Caches all docs, and optionally also scores, coming from a search, and is then able to replay them to another collector.
class	FilterCollector	Collector delegator.
class	MultiCollector	A Collector which allows running a search with several Collectors.
class	PositiveScoresOnlyCollector	A Collector implementation which wraps another Collector and makes sure only documents with scores > 0 are collected.
class	SimpleCollector	Base Collector implementation that is used to collect all contexts.
class	TopDocsCollector<T extends ScoreDoc>	A base class for all collectors that return a TopDocs output.
class	TopFieldCollector	A Collector that sorts by SortField using FieldComparators.
class	TopScoreDocCollector	A Collector implementation that collects the top-scoring hits, returning them as a TopDocs.
class	TotalHitCountCollector	Just counts the total number of hits.

Fields in org.apache.lucene.search declared as Collector

Modifier and Type	Field	Description
protected final Collector	FilterCollector.in

Methods in org.apache.lucene.search with type parameters of type Collector

Modifier and Type	Method	Description
<C2 extends Collector, R2> R2	CachingCollectorManager.replay(CollectorManager<C2,R2> secondPassManager)	Replays each per-slice cache into a fresh second-pass collector, then reduces all results.
<C extends Collector, T> T	IndexSearcher.search(Query query, CollectorManager<C,T> collectorManager)	Lower-level search API.

Methods in org.apache.lucene.search that return Collector

Modifier and Type	Method	Description
Collector[]	MultiCollector.getCollectors()	Provides access to the wrapped Collectors for advanced use-cases
Collector	MultiCollectorManager.newCollector()
static Collector	MultiCollector.wrap(Iterable<? extends Collector> collectors)	Wraps a list of Collectors with a MultiCollector.
static Collector	MultiCollector.wrap(Collector... collectors)	See MultiCollector.wrap(Iterable).

Methods in org.apache.lucene.search with parameters of type Collector

Modifier and Type	Method	Description
static CachingCollector	CachingCollector.create(Collector other, boolean cacheScores, double maxRAMMB)	Create a new CachingCollector that wraps the given collector and caches documents and scores up to the specified RAM threshold.
static CachingCollector	CachingCollector.create(Collector other, boolean cacheScores, int maxDocsToCache)	Create a new CachingCollector that wraps the given collector and caches documents and scores up to the specified max docs threshold.
abstract void	CachingCollector.replay(Collector other)	Replays the cached doc IDs (and scores) to the given Collector.
protected void	IndexSearcher.search(IndexSearcher.LeafReaderContextPartition[] partitions, Weight weight, Collector collector)	Lower-level search API.
void	IndexSearcher.search(Query query, Collector collector)	Deprecated. This method is being deprecated in favor of IndexSearcher.search(Query, CollectorManager) due to its support for concurrency in IndexSearcher
protected void	IndexSearcher.searchLeaf(LeafReaderContext ctx, int minDocId, int maxDocId, Weight weight, Collector collector)	Lower-level search API
static Collector	MultiCollector.wrap(Collector... collectors)	See MultiCollector.wrap(Iterable).

Method parameters in org.apache.lucene.search with type arguments of type Collector

Modifier and Type	Method	Description
Object[]	MultiCollectorManager.reduce(Collection<Collector> reducableCollectors)
static Collector	MultiCollector.wrap(Iterable<? extends Collector> collectors)	Wraps a list of Collectors with a MultiCollector.

Constructors in org.apache.lucene.search with parameters of type Collector

Modifier	Constructor	Description
	FilterCollector(Collector in)	Sole constructor.
	PositiveScoresOnlyCollector(Collector in)