org.apache.lucene.search
Class MultiTermQuery

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

All Implemented Interfaces:

Cloneable, Serializable

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

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

Method Summary

Query	combine(Query[] queries) Expert: called when re-writing queries under MultiSearcher.
protected abstract FilteredTermEnum	getEnum(IndexReader reader) Construct the enumeration to be used, expanding the pattern term.
Term	getTerm() Returns the pattern term.
Query	rewrite(IndexReader reader) Expert: called to re-write queries into primitive queries.
String	toString(String field) Prints a user-readable version of this query.

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

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

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, 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 IOException

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

Throws:

IOException

rewrite

public Query rewrite(IndexReader reader)
              throws IOException

Description copied from class: Query

Expert: called to re-write queries into primitive queries.

Overrides:

rewrite in class Query

Throws:

IOException

combine

public Query combine(Query[] queries)

Description copied from class: Query

Expert: called when re-writing queries under MultiSearcher.

Only implemented by derived queries, with no Query.createWeight(Searcher) implementatation.

Overrides:

combine in class Query

toString

public String toString(String field)

Prints a user-readable version of this query.

Specified by:

toString in class Query