org.apache.jackrabbit.core.query.lucene
Class WildcardQuery

java.lang.Object
  org.apache.lucene.search.Query
      org.apache.jackrabbit.core.query.lucene.WildcardQuery

All Implemented Interfaces:

Cloneable, Serializable

public class WildcardQuery

extends org.apache.lucene.search.Query

Implements a wildcard query on a lucene field with an embedded property name and a pattern.

Wildcards are:

• % : matches zero or more characters
• _ : matches exactly one character

See Also:

Serialized Form

Constructor Summary

WildcardQuery(String field, String propName, String pattern)
Creates a new WildcardQuery.

Method Summary

protected org.apache.lucene.search.Weight	createWeight(org.apache.lucene.search.Searcher searcher) Creates the Weight for this query.
org.apache.lucene.search.Query	rewrite(org.apache.lucene.index.IndexReader reader) Either rewrites this query to a lucene MultiTermQuery or in case of a TooManyClauses exception to a custom jackrabbit query implementation that uses a BitSet to collect all hits.
String	toString(String field) Returns a string representation of this query.

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

clone, combine, 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(String field,
                     String propName,
                     String pattern)

Creates a new WildcardQuery.

Parameters:

field - the name of the field to search.

propName - name of the property to search.

pattern - the wildcard pattern.

Method Detail

rewrite

public org.apache.lucene.search.Query rewrite(org.apache.lucene.index.IndexReader reader)
                                       throws IOException

Either rewrites this query to a lucene MultiTermQuery or in case of a TooManyClauses exception to a custom jackrabbit query implementation that uses a BitSet to collect all hits.

Parameters:

reader - the index reader to use for the search.

Returns:

the rewritten query.

Throws:

IOException - if an error occurs while reading from the index.

createWeight

protected org.apache.lucene.search.Weight createWeight(org.apache.lucene.search.Searcher searcher)

Creates the Weight for this query.

Parameters:

searcher - the searcher to use for the Weight.

Returns:

the Weigth for this query.

toString

public String toString(String field)

Returns a string representation of this query.

Parameters:

field - the field name for which to create a string representation.

Returns:

a string representation of this query.