[LUCENE-2754] add spanquery support for all multitermqueries

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.1, 4.0-ALPHA
• Component/s: core/search
• Lucene Fields: New, Patch Available
• Assignee: Unassigned
• Reporter: Robert Muir
• Created: 11/Nov/10 13:45
• Updated: 28/Aug/22 12:35
• Resolved: 15/Nov/10 01:39

Description

I set fix version: 4.0, but possibly we could do this for 3.x too

Currently, we have a special SpanRegexQuery in contrib, and issues like LUCENE-522 open for SpanFuzzyQuery.
The SpanRegexQuery in contrib is a little messy additionally.

For any arbitrary MultiTermQueries to work as a SpanQuery, there are only 3 requirements:

1. The un-rewritten query must extend SpanQuery so it can be included in Span clauses
2. The rewritten query should be SpanOrQuery instead of BooleanQuery
3. The rewritten term clauses should be SpanTermQueries.

Instead of having logic like this for each query, i suggest adding two rewrite methods:

• ScoringSpanBoolean rewrite
• TopTermsSpanBoolean rewrite

as a start i wrote these up, and added a SpanMultiTermQueryWrapper that can be used to wrap any multitermquery this way.
there are a few kinks, but I think the MTQ policeman can probably help get through them.

Issue Links

• is part of: LUCENE-2757 Refactor RewriteMethods out of MultiTermQuery