[SOLR-756] Make DisjunctionMaxQueryParser generally useful by supporting all query types.

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.3
• Assignee: Unassigned
• Reporter: David Smiley
• Created: 05/Sep/08 19:21
• Updated: 24/Jul/13 15:49

Description

This is an enhancement to the DisjunctionMaxQueryParser to work on all the query variants such as wildcard, prefix, and fuzzy queries, and to support working in "AND" scenarios that are not processed by the min-should-match DisMax QParser. This was not in Solr already because DisMax was only used for a very limited syntax that didn't use those features. In my opinion, this makes a more suitable base parser for general use because unlike the Lucene/Solr parser, this one supports multiple default fields whereas other ones (say Yonik's

{!prefix}

one for example, can't do dismax). The notion of a single default field is antiquated and a technical under-the-hood detail of Lucene that I think Solr should shield the user from by on-the-fly using a DisMax when multiple fields are used.
(patch to be attached soon)

Issue Links

• is blocked by: SOLR-1553 extended dismax query parser
• is depended upon by: SOLR-758 Enhance DisMaxQParserPlugin to support full-Solr syntax and to support alternate escaping strategies.