Lucene.Net.Search.ConstantScoreQuery Class Reference

A query that wraps a filter and simply returns a constant score equal to the query boost for every document in the filter. More...

Inherits Lucene.Net.Search.Query.

Classes
class	ConstantScorer
class	ConstantWeight

Public Member Functions
	ConstantScoreQuery (Filter filter)
override Query	Rewrite (IndexReader reader)
	Expert: called to re-write queries into primitive queries. For example, a PrefixQuery will be rewritten into a BooleanQuery that consists of TermQuerys.
override void	ExtractTerms (System.Collections.Generic.ISet< Term > terms)
	Expert: adds all terms occuring in this query to the terms set. Only works if this query is in its rewritten form.
override Weight	CreateWeight (Searcher searcher)
	Expert: Constructs an appropriate Weight implementation for this query.
override System.String	ToString (string field)
	Prints a user-readable version of this query.
override bool	Equals (System.Object o)
	Returns true if o is equal to this.
override int	GetHashCode ()
	Returns a hash code value for this object.
override System.Object	Clone ()
	Returns a clone of this query.
Public Member Functions inherited from Lucene.Net.Search.Query
abstract System.String	ToString (System.String field)
	Prints a query to a string, with field assumed to be the default field and omitted. The representation used is one that is supposed to be readable by QueryParser. However, there are the following limitations: If the query was created by the parser, the printed representation may not be exactly what was parsed. For example, characters that need to be escaped will be represented without the required backslash. Some of the more complicated queries (e.g. span queries) don't have a representation that can be parsed by QueryParser.
override System.String	ToString ()
	Prints a query to a string.
virtual Weight	Weight (Searcher searcher)
	Expert: Constructs and initializes a Weight for a top-level query.
virtual Query	Combine (Query[] queries)
	Expert: called when re-writing queries under MultiSearcher.
virtual Similarity	GetSimilarity (Searcher searcher)
	Expert: Returns the Similarity implementation to be used for this query. Subclasses may override this method to specify their own Similarity implementation, perhaps one that delegates through that of the Searcher. By default the Searcher's Similarity implementation is returned.
override int	GetHashCode ()
override bool	Equals (System.Object obj)

Properties
virtual Filter	Filter [get]
	Returns the encapsulated filter
Properties inherited from Lucene.Net.Search.Query
virtual float	Boost [get, set]
	Gets or sets the boost for this query clause to b. Documents matching this clause will (in addition to the normal weightings) have their score multiplied by b. The boost is 1.0 by default.

Additional Inherited Members
Static Public Member Functions inherited from Lucene.Net.Search.Query
static Query	MergeBooleanQueries (params BooleanQuery[] queries)
	Expert: merges the clauses of a set of BooleanQuery's into a single BooleanQuery.

Detailed Description

A query that wraps a filter and simply returns a constant score equal to the query boost for every document in the filter.

Definition at line 29 of file ConstantScoreQuery.cs.

Constructor & Destructor Documentation

Lucene.Net.Search.ConstantScoreQuery.ConstantScoreQuery

(

Filter

filter

)

Definition at line 33 of file ConstantScoreQuery.cs.

Member Function Documentation

override System.Object Lucene.Net.Search.ConstantScoreQuery.Clone ( )

virtual

Returns a clone of this query.

Reimplemented from Lucene.Net.Search.Query.

Definition at line 228 of file ConstantScoreQuery.cs.

override Weight Lucene.Net.Search.ConstantScoreQuery.CreateWeight ( Searcher  searcher )

virtual

Expert: Constructs an appropriate Weight implementation for this query.

Only implemented by primitive queries, which re-write to themselves.

Reimplemented from Lucene.Net.Search.Query.

Definition at line 199 of file ConstantScoreQuery.cs.

override bool Lucene.Net.Search.ConstantScoreQuery.Equals

(

System.Object

o

)

Returns true if o is equal to this.

Definition at line 211 of file ConstantScoreQuery.cs.

override void Lucene.Net.Search.ConstantScoreQuery.ExtractTerms ( System.Collections.Generic.ISet< Term >  terms )

virtual

Expert: adds all terms occuring in this query to the terms set. Only works if this query is in its rewritten form.

<throws> UnsupportedOperationException if this query is not yet rewritten </throws>

Reimplemented from Lucene.Net.Search.Query.

Definition at line 49 of file ConstantScoreQuery.cs.

override int Lucene.Net.Search.ConstantScoreQuery.GetHashCode

(

)

Returns a hash code value for this object.

Definition at line 222 of file ConstantScoreQuery.cs.

override Query Lucene.Net.Search.ConstantScoreQuery.Rewrite ( IndexReader  reader )

virtual

Expert: called to re-write queries into primitive queries. For example, a PrefixQuery will be rewritten into a BooleanQuery that consists of TermQuerys.

Reimplemented from Lucene.Net.Search.Query.

Definition at line 44 of file ConstantScoreQuery.cs.

override System.String Lucene.Net.Search.ConstantScoreQuery.ToString

(

string

field

)

Prints a user-readable version of this query.

Definition at line 205 of file ConstantScoreQuery.cs.

Property Documentation

virtual Filter Lucene.Net.Search.ConstantScoreQuery.Filter

get

Returns the encapsulated filter

Definition at line 40 of file ConstantScoreQuery.cs.

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

• core/Search/ConstantScoreQuery.cs