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Sort String Field Alphabetically in Lucene 5.0

I'm having trouble sorting by string fields in Lucene 5.0. Obviously, the way you can sort it, since Lucene 4 has changed. The following is a snippet of some of the fields that are indexes for my documents.

@Override
public Document generateDocument(Process entity)
{
    Document doc = new Document();
    doc.add(new IntField(id, entity.getID(), Field.Store.YES));
    doc.add(new TextField(title, entity.getProcessName(), Field.Store.YES));
    doc.add(new IntField(organizationID, entity.getOrganizationID(), Field.Store.YES));
    doc.add(new StringField(versionDate, DateTools.dateToString(entity.getVersionDate(), DateTools.Resolution.SECOND), Field.Store.YES));
    doc.add(new LongField(entityDate, entity.getVersionDate().getTime(), Field.Store.YES)); 
    return doc;
}

First, I would like to talk about relevancy, which works great. The problem is that sorting by header field does not work. I created a sortfield field that I am trying to use with TopFieldCollector after a chain of method calls.

public BaseSearchCore<Process, ProcessSearchResultScore>.SearchContainer search(String searchQuery, Filter filter, int page, int hitsPerPage) throws IOException, ParseException
    {
    SortField titleSort = new SortField(title, SortField.Type.STRING, true);
    return super.search(searchQuery, filter, page, hitsPerPage, title);
    }

What's happening:

public SearchContainer search(String searchQuery, Filter filter, int page, int hitsPerPage, SortField... sortfields) throws IOException, ParseException 
    {
        Query query = getQuery(searchQuery);
        TopFieldCollector paginate = getCollector(sortfields);
        int startIndex = (page -1) * hitsPerPage;
        ScoreDoc[] hits = executeSearch(query, paginate, filter, startIndex, hitsPerPage);

        return collectResults(query, filter, hitsPerPage, hits, page);
  }

And finally, to the method that applies the sort field:

private TopFieldCollector getCollector(SortField sortfield) throws IOException
    {
        SortField[] sortFields = new SortField[] {SortField.FIELD_SCORE, sortField};
        Sort sorter = new Sort(sortFields);
        TopFieldCollector collector = TopFieldCollector.create(sorter, 25000, true, false, true);
        return collector;
    }

Using the returned collector, a regular query is executed and the result is returned. However, if I try to sort with this SortField, I will get this exception:

java.lang.IllegalStateException: docvalues ​​NONE 'title' (expected = SORTED). UninvertingReader docvalues.

, ( ) Lucene 5? .

, , . , Lucene.

+4
2

. ( , , ), , . , , - , , :

Sort sort = new Sort(new SortField("title", SortField.Type.STRING));
TopDocs docs = searcher.search(new TermQuery(new Term("title", "something")), 10, sort);

- :

doc.add(new TextField("title", term, Field.Store.YES));

, , , docvalues. DocValues ​​ Lucene 4.X, . TextField, SortedDocValuesField () :

doc.add(new TextField("title", term, Field.Store.YES));
doc.add(new SortedDocValuesField("title", new BytesRef(term)));
+7

Lucene 5.0 :

doc.add(new SortedDocValuesField("title", new BytesRef(term)));

:

Sort sort = new Sort();
sort.setSort(new SortField("title", SortField.Type.STRING));            
TopDocs hits = searcher.search(bQuery.build(), pageSize, sort);
0

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