Class FacetsCollector

Collects hits for subsequent faceting. Once you've run a search and collect hits into this, instantiate one of the Lucene.Net.Search.ICollector 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

Implements

Lucene.Net.Search.ICollector

Inherited Members

System.Object.Equals(System.Object)

System.Object.Equals(System.Object, System.Object)

System.Object.GetHashCode()

System.Object.GetType()

System.Object.MemberwiseClone()

System.Object.ReferenceEquals(System.Object, System.Object)

System.Object.ToString()

Namespace: Lucene.Net.Facet

Assembly: Lucene.Net.Facet.dll

Syntax

public class FacetsCollector : ICollector

Constructors

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FacetsCollector()

Default constructor

Declaration

public FacetsCollector()

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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

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AcceptsDocsOutOfOrder

Declaration

public bool AcceptsDocsOutOfOrder { get; }

Property Value

Type	Description
System.Boolean

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KeepScores

True if scores were saved.

Declaration

public bool KeepScores { get; }

Property Value

Type	Description
System.Boolean

Methods

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Collect(Int32)

Declaration

public void Collect(int doc)

Parameters

Type	Name	Description
System.Int32	doc

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CreateDocs(Int32)

Creates a FacetsCollector.Docs to record hits. The default uses Lucene.Net.Util.FixedBitSet to record hits and you can override to e.g. record the docs in your own Lucene.Net.Search.DocIdSet.

Declaration

protected virtual FacetsCollector.Docs CreateDocs(int maxDoc)

Parameters

Type	Name	Description
System.Int32	maxDoc

Returns

Type	Description
FacetsCollector.Docs

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GetMatchingDocs()

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

Declaration

public virtual IList<FacetsCollector.MatchingDocs> GetMatchingDocs()

Returns

Type	Description
System.Collections.Generic.IList<FacetsCollector.MatchingDocs>

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

Utility method, to search and also collect all hits into the provided Lucene.Net.Search.ICollector.

Declaration

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

Parameters

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

Returns

Type	Description
Lucene.Net.Search.TopDocs

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

Utility method, to search and also collect all hits into the provided Lucene.Net.Search.ICollector.

Declaration

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

Parameters

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

Returns

Type	Description
Lucene.Net.Search.TopFieldDocs

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

Utility method, to search and also collect all hits into the provided Lucene.Net.Search.ICollector.

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
Lucene.Net.Search.IndexSearcher	searcher
Lucene.Net.Search.Query	q
Lucene.Net.Search.Filter	filter
System.Int32	n
Lucene.Net.Search.Sort	sort
System.Boolean	doDocScores
System.Boolean	doMaxScore
Lucene.Net.Search.ICollector	fc

Returns

Type	Description
Lucene.Net.Search.TopFieldDocs

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Search(IndexSearcher, Query, Int32, ICollector)

Utility method, to search and also collect all hits into the provided Lucene.Net.Search.ICollector.

Declaration

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

Parameters

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

Returns

Type	Description
Lucene.Net.Search.TopDocs

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

Utility method, to search and also collect all hits into the provided Lucene.Net.Search.ICollector.

Declaration

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

Parameters

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

Returns

Type	Description
Lucene.Net.Search.TopDocs

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

Utility method, to search and also collect all hits into the provided Lucene.Net.Search.ICollector.

Declaration

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

Parameters

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

Returns

Type	Description
Lucene.Net.Search.TopDocs

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

Utility method, to search and also collect all hits into the provided Lucene.Net.Search.ICollector.

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
Lucene.Net.Search.IndexSearcher	searcher
Lucene.Net.Search.ScoreDoc	after
Lucene.Net.Search.Query	q
Lucene.Net.Search.Filter	filter
System.Int32	n
Lucene.Net.Search.Sort	sort
System.Boolean	doDocScores
System.Boolean	doMaxScore
Lucene.Net.Search.ICollector	fc

Returns

Type	Description
Lucene.Net.Search.TopDocs

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

Utility method, to search and also collect all hits into the provided Lucene.Net.Search.ICollector.

Declaration

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

Parameters

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

Returns

Type	Description
Lucene.Net.Search.TopDocs

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SetNextReader(AtomicReaderContext)

Declaration

public void SetNextReader(AtomicReaderContext context)

Parameters

Type	Name	Description
Lucene.Net.Index.AtomicReaderContext	context

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SetScorer(Scorer)

Declaration

public void SetScorer(Scorer scorer)

Parameters

Type	Name	Description
Lucene.Net.Search.Scorer	scorer

Implements

Lucene.Net.Search.ICollector