org.apache.lucene.search
Class WildcardQuery

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

All Implemented Interfaces:

Cloneable, Serializable

public class WildcardQuery

extends MultiTermQuery

Implements the wildcard search query. Supported wildcards are *, which matches any character sequence (including the empty one), and ?, which matches any single character. Note this query can be slow, as it needs to iterate over all terms. In order to prevent extremely slow WildcardQueries, a Wildcard term must not start with one of the wildcards * or ?.

See Also:

WildcardTermEnum, Serialized Form

Constructor Summary

WildcardQuery(Term term)

Method Summary

protected FilteredTermEnum

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

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

combine, getTerm, rewrite, toString

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

WildcardQuery

public WildcardQuery(Term term)

Method Detail

getEnum

protected FilteredTermEnum getEnum(IndexReader reader)
                            throws IOException

Description copied from class: MultiTermQuery

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

Specified by:

getEnum in class MultiTermQuery

Throws:

IOException