Class FacetsCollector

Collects hits for subsequent faceting. Once you've run a search and collect hits into this, instantiate one of the subclasses to do the facet counting. Use the Search utility methods (such as Search(IndexSearcher, Query, Int32, ICollector)) to perform an "ordinary" search but also collect into a Facets.

Inheritance

System.Object

FacetsCollector

RandomSamplingFacetsCollector

Namespace: Lucene.Net.Facet

Assembly: Lucene.Net.Facet.dll

Syntax

public class FacetsCollector : ICollector

Constructors

FacetsCollector()

Default constructor

Declaration

public FacetsCollector()

FacetsCollector(Boolean)

Create this; if keepScores is true then a float[] is allocated to hold score of all hits.

Declaration

public FacetsCollector(bool keepScores)

Parameters

Type	Name	Description
System.Boolean	keepScores

Properties

AcceptsDocsOutOfOrder

Declaration

public bool AcceptsDocsOutOfOrder { get; }

Property Value

Type	Description
System.Boolean

KeepScores

True if scores were saved.

Declaration

public bool KeepScores { get; }

Property Value

Type	Description
System.Boolean

Methods

Collect(Int32)

Declaration

public void Collect(int doc)

Parameters

Type	Name	Description
System.Int32	doc

CreateDocs(Int32)

Creates a FacetsCollector.Docs to record hits. The default uses to record hits and you can override to e.g. record the docs in your own .

Declaration

protected virtual FacetsCollector.Docs CreateDocs(int maxDoc)

Parameters

Type	Name	Description
System.Int32	maxDoc

Returns

Type	Description
FacetsCollector.Docs

GetMatchingDocs()

Returns the documents matched by the query, one FacetsCollector.MatchingDocs per visited segment.

Declaration

public virtual IList<FacetsCollector.MatchingDocs> GetMatchingDocs()

Returns

Type	Description
IList<FacetsCollector.MatchingDocs>

Search(IndexSearcher, Query, Filter, Int32, ICollector)

Utility method, to search and also collect all hits into the provided .

Declaration

public static TopDocs Search(IndexSearcher searcher, Query q, Filter filter, int n, ICollector fc)

Parameters

Type	Name	Description
IndexSearcher	searcher
Query	q
Filter	filter
System.Int32	n
ICollector	fc

Returns

Type	Description
TopDocs

Search(IndexSearcher, Query, Filter, Int32, Sort, ICollector)

Utility method, to search and also collect all hits into the provided .

Declaration

public static TopFieldDocs Search(IndexSearcher searcher, Query q, Filter filter, int n, Sort sort, ICollector fc)

Parameters

Type	Name	Description
IndexSearcher	searcher
Query	q
Filter	filter
System.Int32	n
Sort	sort
ICollector	fc

Returns

Type	Description
TopFieldDocs

Search(IndexSearcher, Query, Filter, Int32, Sort, Boolean, Boolean, ICollector)

Utility method, to search and also collect all hits into the provided .

Declaration

public static TopFieldDocs Search(IndexSearcher searcher, Query q, Filter filter, int n, Sort sort, bool doDocScores, bool doMaxScore, ICollector fc)

Parameters

Type	Name	Description
IndexSearcher	searcher
Query	q
Filter	filter
System.Int32	n
Sort	sort
System.Boolean	doDocScores
System.Boolean	doMaxScore
ICollector	fc

Returns

Type	Description
TopFieldDocs

Search(IndexSearcher, Query, Int32, ICollector)

Utility method, to search and also collect all hits into the provided .

Declaration

public static TopDocs Search(IndexSearcher searcher, Query q, int n, ICollector fc)

Parameters

Type	Name	Description
IndexSearcher	searcher
Query	q
System.Int32	n
ICollector	fc

Returns

Type	Description
TopDocs

SearchAfter(IndexSearcher, ScoreDoc, Query, Filter, Int32, ICollector)

Utility method, to search and also collect all hits into the provided .

Declaration

public static TopDocs SearchAfter(IndexSearcher searcher, ScoreDoc after, Query q, Filter filter, int n, ICollector fc)

Parameters

Type	Name	Description
IndexSearcher	searcher
ScoreDoc	after
Query	q
Filter	filter
System.Int32	n
ICollector	fc

Returns

Type	Description
TopDocs

SearchAfter(IndexSearcher, ScoreDoc, Query, Filter, Int32, Sort, ICollector)

Utility method, to search and also collect all hits into the provided .

Declaration

public static TopDocs SearchAfter(IndexSearcher searcher, ScoreDoc after, Query q, Filter filter, int n, Sort sort, ICollector fc)

Parameters

Type	Name	Description
IndexSearcher	searcher
ScoreDoc	after
Query	q
Filter	filter
System.Int32	n
Sort	sort
ICollector	fc

Returns

Type	Description
TopDocs

SearchAfter(IndexSearcher, ScoreDoc, Query, Filter, Int32, Sort, Boolean, Boolean, ICollector)

Utility method, to search and also collect all hits into the provided .

Declaration

public static TopDocs SearchAfter(IndexSearcher searcher, ScoreDoc after, Query q, Filter filter, int n, Sort sort, bool doDocScores, bool doMaxScore, ICollector fc)

Parameters

Type	Name	Description
IndexSearcher	searcher
ScoreDoc	after
Query	q
Filter	filter
System.Int32	n
Sort	sort
System.Boolean	doDocScores
System.Boolean	doMaxScore
ICollector	fc

Returns

Type	Description
TopDocs

SearchAfter(IndexSearcher, ScoreDoc, Query, Int32, ICollector)

Utility method, to search and also collect all hits into the provided .

Declaration

public virtual TopDocs SearchAfter(IndexSearcher searcher, ScoreDoc after, Query q, int n, ICollector fc)

Parameters

Type	Name	Description
IndexSearcher	searcher
ScoreDoc	after
Query	q
System.Int32	n
ICollector	fc

Returns

Type	Description
TopDocs

SetNextReader(AtomicReaderContext)

Declaration

public void SetNextReader(AtomicReaderContext context)

Parameters

Type	Name	Description
AtomicReaderContext	context

SetScorer(Scorer)

Declaration

public void SetScorer(Scorer scorer)

Parameters

Type	Name	Description
Scorer	scorer