Lucene.Net.Search.MultiTermQuery.ConstantScoreAutoRewrite Class Reference

A rewrite method that tries to pick the best constant-score rewrite method based on term and document counts from the query. If both the number of terms and documents is small enough, then CONSTANT_SCORE_BOOLEAN_QUERY_REWRITE is used. Otherwise, CONSTANT_SCORE_FILTER_REWRITE is used. More...

Inherits Lucene.Net.Search.RewriteMethod.

Inherited by Lucene.Net.Search.MultiTermQuery.AnonymousClassConstantScoreAutoRewrite.

Public Member Functions
	ConstantScoreAutoRewrite ()
override Query	Rewrite (IndexReader reader, MultiTermQuery query)
override int	GetHashCode ()
override bool	Equals (System.Object obj)

Static Public Attributes
static int	DEFAULT_TERM_COUNT_CUTOFF = 350
static double	DEFAULT_DOC_COUNT_PERCENT = 0.1

Properties
virtual int	TermCountCutoff [get, set]
	If the number of terms in this query is equal to or larger than this setting then CONSTANT_SCORE_FILTER_REWRITE is used.
virtual double	DocCountPercent [get, set]
	If the number of documents to be visited in the postings exceeds this specified percentage of the MaxDoc for the index, then CONSTANT_SCORE_FILTER_REWRITE is used.

Detailed Description

A rewrite method that tries to pick the best constant-score rewrite method based on term and document counts from the query. If both the number of terms and documents is small enough, then CONSTANT_SCORE_BOOLEAN_QUERY_REWRITE is used. Otherwise, CONSTANT_SCORE_FILTER_REWRITE is used.

Definition at line 214 of file MultiTermQuery.cs.

Constructor & Destructor Documentation

Lucene.Net.Search.MultiTermQuery.ConstantScoreAutoRewrite.ConstantScoreAutoRewrite

(

)

Definition at line 216 of file MultiTermQuery.cs.

Member Function Documentation

override bool Lucene.Net.Search.MultiTermQuery.ConstantScoreAutoRewrite.Equals

(

System.Object

obj

)

Definition at line 325 of file MultiTermQuery.cs.

override int Lucene.Net.Search.MultiTermQuery.ConstantScoreAutoRewrite.GetHashCode

(

)

Definition at line 319 of file MultiTermQuery.cs.

override Query Lucene.Net.Search.MultiTermQuery.ConstantScoreAutoRewrite.Rewrite ( IndexReader  reader, MultiTermQuery  query  )

virtual

Implements Lucene.Net.Search.RewriteMethod.

Definition at line 260 of file MultiTermQuery.cs.

Member Data Documentation

double Lucene.Net.Search.MultiTermQuery.ConstantScoreAutoRewrite.DEFAULT_DOC_COUNT_PERCENT = 0.1

static

Definition at line 233 of file MultiTermQuery.cs.

int Lucene.Net.Search.MultiTermQuery.ConstantScoreAutoRewrite.DEFAULT_TERM_COUNT_CUTOFF = 350

static

Definition at line 229 of file MultiTermQuery.cs.

Property Documentation

virtual double Lucene.Net.Search.MultiTermQuery.ConstantScoreAutoRewrite.DocCountPercent

getset

If the number of documents to be visited in the postings exceeds this specified percentage of the MaxDoc for the index, then CONSTANT_SCORE_FILTER_REWRITE is used.

0.0 to 100.0

Definition at line 255 of file MultiTermQuery.cs.

virtual int Lucene.Net.Search.MultiTermQuery.ConstantScoreAutoRewrite.TermCountCutoff

getset

If the number of terms in this query is equal to or larger than this setting then CONSTANT_SCORE_FILTER_REWRITE is used.

Definition at line 243 of file MultiTermQuery.cs.

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The documentation for this class was generated from the following file:

• core/Search/MultiTermQuery.cs