org.apache.lucene.search

Class MultiTermQuery

java.lang.Object

org.apache.lucene.search.Query

org.apache.lucene.search.MultiTermQuery

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable

Direct Known Subclasses:

FuzzyQuery, WildcardQuery

public abstract class MultiTermQuery
extends Query

A Query that matches documents containing a subset of terms provided by a FilteredTermEnum enumeration.

MultiTermQuery is not designed to be used by itself.
The reason being that it is not intialized with a FilteredTermEnum enumeration. A FilteredTermEnum enumeration needs to be provided.

For example, WildcardQuery and FuzzyQuery extend MultiTermQuery to provide WildcardTermEnum and FuzzyTermEnum, respectively.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
MultiTermQuery(Term term) Constructs a query for terms matching term.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(java.lang.Object o)
protected abstract FilteredTermEnum	getEnum(IndexReader reader) Construct the enumeration to be used, expanding the pattern term.
Term	getTerm() Returns the pattern term.
int	hashCode()
Query	rewrite(IndexReader reader) Expert: called to re-write queries into primitive queries.
java.lang.String	toString(java.lang.String field) Prints a user-readable version of this query.

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

clone, combine, createWeight, extractTerms, getBoost, getSimilarity, mergeBooleanQueries, setBoost, toString, weight

Methods inherited from class java.lang.Object

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

Constructor Detail

MultiTermQuery

public MultiTermQuery(Term term)

Constructs a query for terms matching term.

Method Detail

getTerm

public Term getTerm()

Returns the pattern term.

getEnum

protected abstract FilteredTermEnum getEnum(IndexReader reader)
                                     throws java.io.IOException

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

Throws:

java.io.IOException

rewrite

public Query rewrite(IndexReader reader)
              throws java.io.IOException

Description copied from class: Query

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

Overrides:

rewrite in class Query

Throws:

java.io.IOException

toString

public java.lang.String toString(java.lang.String field)

Prints a user-readable version of this query.

Specified by:

toString in class Query

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object