Add optional storing of document numbers in term dictionary

• Key: LUCENE-1278
• Type: New Feature
• Status: Open
• Priority: Minor
• Assignee: Unassigned
• Reporter: Jason Rutherglen
• Component/s: Index
• Affects Version/s: 2.3.1

Description

Add optional storing of document numbers in term dictionary. String index field cache and range filter creation will be faster.

Example read code:

TermEnum termEnum = indexReader.terms(TermEnum.LOAD_DOCS);
do {
  Term term = termEnum.term();
  if (term == null || term.field() != field) break;
  int[] docs = termEnum.docs();
} while (termEnum.next());

Example write code:

Document document = new Document();
document.add(new Field("tag", "dog", Field.Store.YES, Field.Index.UN_TOKENIZED, Field.Term.STORE_DOCS));
indexWriter.addDocument(document);