How to sort IntPont or LongPoint field in Lucene 6

Question

Hi: I am migrating to Lucene 6 from Lucene 5.1. I found out that InPoint does not support sorting as its DocValuesType is frozen to NONE and sorting requires NUMERIC. In Lucene 5.1, I could set the field type of a newmeric field so I could do range based search and sort the result. I know I can migrate to LegacyIntField but I'd like migrate to the new IntPoint instead. Does any one know how to index a numeric value to support both range based query and sorting?

Thank you!

score 5 · Accepted Answer · answered Jul 22 '16 at 09:07

5

You have to use additional SortedNumericDocValuesField

document.add(new SortedNumericDocValuesField("bid_sorter", bid));

and make sort based on it

searcher.search(query, hitsPerPage, new Sort(new SortField("bid_sorter", SortField.Type.SCORE, true)))

answered Jul 22 '16 at 09:07

AlexY

96
3

Honestly NumericDocValues and SortField is enough – Piotr Idzikowski Aug 07 '19 at 13:20

score 2 · Answer 2 · edited Nov 23 '18 at 13:43

2

You need to store the value in a NumericDocValuesField or its subclasses. doc.add(new NumericDocValuesField(field, 10));

Then search docs ranked by this field will be :

Sort sort = new Sort(new SortedNumericSortField(field, SortField.Type.INT, true)); TopDocs topDocs = indexsearcher.search(query, returnedDocNum, sort);

edited Nov 23 '18 at 13:43

Ulf Lindback

13,974
3
40
31

answered Mar 08 '17 at 17:41

DukeJun

21
2

you don't have to use SortedNumericSortField, SortField supports doc values – Piotr Idzikowski Aug 07 '19 at 13:19

How to sort IntPont or LongPoint field in Lucene 6

2 Answers2

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