public class

PrefixQuery

extends MultiTermQuery

java.lang.Object
↳	org.apache.lucene.search.Query
	↳	org.apache.lucene.search.MultiTermQuery
		↳	org.apache.lucene.search.PrefixQuery

Class Overview

A Query that matches documents containing terms with a specified prefix. A PrefixQuery is built by QueryParser for input like app*.

This query uses the CONSTANT_SCORE_AUTO_REWRITE_DEFAULT rewrite method.

Summary

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Inherited Fields

From class org.apache.lucene.search.MultiTermQuery

Public Constructors
	PrefixQuery(Term prefix) Constructs a query for terms starting with `prefix`.

Public Methods
boolean	equals(Object obj)
Term	getPrefix() Returns the prefix of this query.
int	hashCode()
String	toString(String field) Prints a user-readable version of this query.

Protected Methods
FilteredTermEnum	getEnum(IndexReader reader) Construct the enumeration to be used, expanding the pattern term.

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Inherited Methods

From class org.apache.lucene.search.MultiTermQuery

From class org.apache.lucene.search.Query

Object	clone() Returns a clone of this query.
Query	combine(Query[] queries) Expert: called when re-writing queries under MultiSearcher.
Weight	createWeight(Searcher searcher) Expert: Constructs an appropriate Weight implementation for this query.
boolean	equals(Object obj)
void	extractTerms(Set<Term> terms) Expert: adds all terms occurring in this query to the terms set.
float	getBoost() Gets the boost for this clause.
Similarity	getSimilarity(Searcher searcher) Expert: Returns the Similarity implementation to be used for this query.
int	hashCode()
static Query	mergeBooleanQueries(BooleanQuery... queries) Expert: merges the clauses of a set of BooleanQuery's into a single BooleanQuery.
Query	rewrite(IndexReader reader) Expert: called to re-write queries into primitive queries.
void	setBoost(float b) Sets the boost for this query clause to `b`.
String	toString() Prints a query to a string.
abstract String	toString(String field) Prints a query to a string, with `field` assumed to be the default field and omitted.
Weight	weight(Searcher searcher) Expert: Constructs and initializes a Weight for a top-level query.

From class java.lang.Object

Public Constructors

public PrefixQuery (Term prefix)

Constructs a query for terms starting with prefix.

Public Methods

public boolean equals (Object obj)

public Term getPrefix ()

Returns the prefix of this query.

public int hashCode ()

public String toString (String field)

Prints a user-readable version of this query.

Protected Methods

protected FilteredTermEnum getEnum (IndexReader reader)

Construct the enumeration to be used, expanding the pattern term.

Throws

IOException

Interfaces

Classes

Enums

Exceptions