Class ScoringRewrite<Q>

Base rewrite method that translates each term into a query, and keeps the scores as computed by the query.

@lucene.internal - Only public to be accessible by spans package.

Inheritance
System.Object
MultiTermQuery.RewriteMethod
TermCollectingRewrite<Q>
ScoringRewrite<Q>
Inherited Members
Namespace: Lucene.Net.Search
Assembly: Lucene.Net.dll
Syntax
public abstract class ScoringRewrite<Q> : TermCollectingRewrite<Q> where Q : Query
Type Parameters
Name Description
Q

Fields

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CONSTANT_SCORE_BOOLEAN_QUERY_REWRITE

Like SCORING_BOOLEAN_QUERY_REWRITE except scores are not computed. Instead, each matching document receives a constant score equal to the query's boost.

NOTE: this rewrite method will hit BooleanQuery.TooManyClausesException if the number of terms exceeds MaxClauseCount.

Declaration
public static readonly MultiTermQuery.RewriteMethod CONSTANT_SCORE_BOOLEAN_QUERY_REWRITE
Field Value
Type Description
MultiTermQuery.RewriteMethod
See Also
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SCORING_BOOLEAN_QUERY_REWRITE

A rewrite method that first translates each term into SHOULD clause in a BooleanQuery, and keeps the scores as computed by the query. Note that typically such scores are meaningless to the user, and require non-trivial CPU to compute, so it's almost always better to use CONSTANT_SCORE_AUTO_REWRITE_DEFAULT instead.

NOTE: this rewrite method will hit BooleanQuery.TooManyClausesException if the number of terms exceeds MaxClauseCount.

Declaration
public static readonly ScoringRewrite<BooleanQuery> SCORING_BOOLEAN_QUERY_REWRITE
Field Value
Type Description
ScoringRewrite<BooleanQuery>
See Also

Methods

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CheckMaxClauseCount(Int32)

This method is called after every new term to check if the number of max clauses (e.g. in BooleanQuery) is not exceeded. Throws the corresponding .

Declaration
protected abstract void CheckMaxClauseCount(int count)
Parameters
Type Name Description
System.Int32 count
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Rewrite(IndexReader, MultiTermQuery)

Declaration
public override Query Rewrite(IndexReader reader, MultiTermQuery query)
Parameters
Type Name Description
IndexReader reader
MultiTermQuery query
Returns
Type Description
Query
Overrides