org.modeshape.jcr.query.lucene

Class HasValueQuery

java.lang.Object

org.apache.lucene.search.Query

org.modeshape.jcr.query.lucene.HasValueQuery

All Implemented Interfaces:

Serializable, Cloneable

public class HasValueQuery
extends org.apache.lucene.search.Query

A Lucene Query implementation that is satisfied if there is at least one value for a document.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected class	HasValueQuery.ExistsScorer A scorer for the Path query.
protected class	HasValueQuery.ExistsWeight Calculates query weights and builds query scores for our NOT queries.

Field Summary

Fields

Modifier and Type	Field and Description
protected String	fieldName
protected org.apache.lucene.document.FieldSelector	fieldSelector

Constructor Summary

Constructors

Constructor and Description
HasValueQuery(String fieldName) Construct a Query implementation that scores nodes according to the supplied comparator.

Method Summary

Methods

Modifier and Type	Method and Description
Object	clone()
org.apache.lucene.search.Weight	createWeight(org.apache.lucene.search.Searcher searcher)
protected boolean	hasValue(org.apache.lucene.index.IndexReader reader, int docId)
String	toString(String field)

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

combine, equals, extractTerms, getBoost, getSimilarity, hashCode, mergeBooleanQueries, rewrite, setBoost, toString, weight

Methods inherited from class java.lang.Object

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

Field Detail

fieldName

protected final String fieldName

fieldSelector

protected final org.apache.lucene.document.FieldSelector fieldSelector

Constructor Detail

HasValueQuery

public HasValueQuery(String fieldName)

Construct a Query implementation that scores nodes according to the supplied comparator.

Parameters:

fieldName - the name of the document field containing the value; may not be null

Method Detail

clone

public Object clone()

Overrides:

clone in class org.apache.lucene.search.Query

See Also:

Query.clone()

createWeight

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

Overrides:

createWeight in class org.apache.lucene.search.Query

See Also:

Query.createWeight(org.apache.lucene.search.Searcher)

toString

public String toString(String field)

Specified by:

toString in class org.apache.lucene.search.Query

See Also:

Query.toString(java.lang.String)

hasValue

protected boolean hasValue(org.apache.lucene.index.IndexReader reader,
               int docId)
                    throws IOException

Throws:

IOException