[LUCENE-6039] Add IndexOptions.NO and DocValuesType.NO, instead of null

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 5.0, 6.0
• Lucene Fields: New
• Assignee: Michael McCandless
• Reporter: Michael McCandless
• Created: 31/Oct/14 10:47
• Updated: 28/Aug/22 14:18
• Resolved: 31/Oct/14 21:18

Description

Idea from Simon: it seems dangerous for IndexOptions and DocValuesType
via Indexable/FieldType and FieldInfo that we use null to mean it's
not indexed or has no doc values.

We should instead have an explicit choice (IndexOptions.NO,
DocValuesType.NO) in the enum?