public class HasValueQuery
extends org.apache.lucene.search.Query
Query
implementation that is satisfied if there is at least one value for a document.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.
|
Modifier and Type | Field and Description |
---|---|
protected String |
fieldName |
protected org.apache.lucene.document.FieldSelector |
fieldSelector |
Constructor and Description |
---|
HasValueQuery(String fieldName)
Construct a
Query implementation that scores nodes according to the supplied comparator. |
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) |
protected final String fieldName
protected final org.apache.lucene.document.FieldSelector fieldSelector
public HasValueQuery(String fieldName)
Query
implementation that scores nodes according to the supplied comparator.fieldName
- the name of the document field containing the value; may not be nullpublic Object clone()
clone
in class org.apache.lucene.search.Query
Query.clone()
public org.apache.lucene.search.Weight createWeight(org.apache.lucene.search.Searcher searcher)
createWeight
in class org.apache.lucene.search.Query
Query.createWeight(org.apache.lucene.search.Searcher)
public String toString(String field)
toString
in class org.apache.lucene.search.Query
Query.toString(java.lang.String)
protected boolean hasValue(org.apache.lucene.index.IndexReader reader, int docId) throws IOException
IOException
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