org.apache.lucene.search

Class MatchAllDocsQuery

java.lang.Object

org.apache.lucene.search.Query

org.apache.lucene.search.MatchAllDocsQuery

All Implemented Interfaces:

Cloneable

public class MatchAllDocsQuery
extends Query

A query that matches all documents.

Constructor Summary

Constructors

Constructor and Description
MatchAllDocsQuery()

Method Summary

Methods

Modifier and Type	Method and Description
Weight	createWeight(IndexSearcher searcher, boolean needsScores) Expert: Constructs an appropriate Weight implementation for this query.
void	extractTerms(Set<Term> terms) Expert: adds all terms occurring in this query to the terms set.
String	toString(String field) Prints a query to a string, with field assumed to be the default field and omitted.

Methods inherited from class org.apache.lucene.search.Query

clone, equals, getBoost, hashCode, rewrite, setBoost, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

MatchAllDocsQuery

public MatchAllDocsQuery()

Method Detail

createWeight

public Weight createWeight(IndexSearcher searcher,
                  boolean needsScores)

Description copied from class: Query

Expert: Constructs an appropriate Weight implementation for this query.

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

Overrides:

createWeight in class Query

needsScores - True if document scores (Scorer.score()) or match frequencies (Scorer.freq()) are needed.

extractTerms

public void extractTerms(Set<Term> terms)

Description copied from class: Query

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

Overrides:

extractTerms in class Query

toString

public String toString(String field)

Description copied from class: Query

Prints a query to a string, with field assumed to be the default field and omitted.

Specified by:

toString in class Query