public class ReverseOrdFieldSource
extends org.apache.lucene.queries.function.ValueSource
LeafReader.getSortedDocValues(java.lang.String)
and reverses the order.
WARNING: ord() depends on the position in an index and can thus change when other documents are inserted or deleted,
or if a MultiSearcher is used.
WARNING: as of Solr 1.4, ord() and rord() can cause excess memory use since they must use a FieldCache entry
at the top level reader, while sorting and function queries now use entries at the segment level. Hence sorting
or using a different function query, in addition to ord()/rord() will double memory use.
Constructor and Description |
---|
ReverseOrdFieldSource(String field) |
Modifier and Type | Method and Description |
---|---|
String |
description() |
boolean |
equals(Object o) |
org.apache.lucene.queries.function.FunctionValues |
getValues(Map context,
org.apache.lucene.index.LeafReaderContext readerContext) |
int |
hashCode() |
public final String field
public ReverseOrdFieldSource(String field)
public String description()
description
in class org.apache.lucene.queries.function.ValueSource
public org.apache.lucene.queries.function.FunctionValues getValues(Map context, org.apache.lucene.index.LeafReaderContext readerContext) throws IOException
getValues
in class org.apache.lucene.queries.function.ValueSource
IOException
public boolean equals(Object o)
equals
in class org.apache.lucene.queries.function.ValueSource
public int hashCode()
hashCode
in class org.apache.lucene.queries.function.ValueSource
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