org.apache.solr.search

Class Sorting

java.lang.Object

org.apache.solr.search.Sorting

public class Sorting
extends java.lang.Object

Extra lucene sorting utilities & convenience methods

Version:

$Id: Sorting.java 778893 2009-05-26 21:34:53Z yonik $

Field Summary

Fields

Modifier and Type	Field and Description
(package private) static org.apache.lucene.search.FieldComparatorSource	nullStringLastComparatorSource

Constructor Summary

Constructors

Constructor and Description
Sorting()

Method Summary

Modifier and Type	Method and Description
static org.apache.lucene.search.SortField	getStringSortField(java.lang.String fieldName, boolean reverse, boolean nullLast, boolean nullFirst) Returns a SortField for a string field.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

nullStringLastComparatorSource

static final org.apache.lucene.search.FieldComparatorSource nullStringLastComparatorSource

Constructor Detail

Sorting

public Sorting()

Method Detail

getStringSortField

public static org.apache.lucene.search.SortField getStringSortField(java.lang.String fieldName,
                                                                    boolean reverse,
                                                                    boolean nullLast,
                                                                    boolean nullFirst)

Returns a SortField for a string field. If nullLast and nullFirst are both false, then default lucene string sorting is used where null strings sort first in an ascending sort, and last in a descending sort.

Parameters:

fieldName - the name of the field to sort on

reverse - true for a reverse (desc) sort

nullLast - true if null should come last, regardless of sort order

nullFirst - true if null should come first, regardless of sort order

Returns:

SortField