[LUCENE-2756] MultiSearcher.rewrite() incorrectly rewrites queries

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.1, 4.0-ALPHA
• Component/s: core/search
• Lucene Fields: New
• Assignee: Unassigned
• Reporter: Robert Muir
• Created: 12/Nov/10 13:00
• Updated: 28/Aug/22 12:35
• Resolved: 11/Jan/11 00:22

Description

This was reported on the userlist, in the context of range queries.

Its also easy to make our existing tests fail with my patch on LUCENE-2751:

ant test-core -Dtestcase=TestBoolean2 -Dtestmethod=testRandomQueries -Dtests.seed=7679849347282878725:-903778383189134045

The fundamental problem is that MultiSearcher first rewrites against individual subs,
then uses Query.combine() which simply OR's these sub-clauses.

This is incorrect for expanded MUST_NOT queries (e.g. from wildcard), as it violates demorgan's law.

Issue Links

• is duplicated by: LUCENE-3096 MultiSearcher does not work correctly with Not on NumericRange
• is superceded by: LUCENE-2837 Collapse Searcher/Searchable/IndexSearcher; remove contrib/remote; merge PMS into IndexSearcher