[SOLR-16111] hl.queryFieldPattern support (advanced alternative to hl.requireFieldMatch)

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 9.1, main (10.0)
• Component/s: highlighter
• Assignee: Christine Poerschke
• Reporter: Christine Poerschke
• Created: 23/Mar/22 15:24
• Updated: 10/Jan/23 20:45
• Resolved: 08/Apr/22 16:56

Description

Use case: a search referencing multiple fields and highlighting is required for one of the fields: q=fieldA:one OR fieldB:two OR fieldC:three hl.fl=fieldA

• hl.requireFieldMatch=true can be used if highlighting of the terms ("two", "three") from the fieldB and fieldC is a problem.
• hl.q=fieldA:one OR fieldB:two can be used if highlighting of the fieldB term is good but fieldC terms are a problem.

New feature: hl.queryFieldPattern=fieldA,fieldB as an alternative to hl.q=fieldA:one OR fieldB:two e.g. if obtaining hl.q from q poses complexity.

There's already a TODO comment present in the code regarding this: https://github.com/apache/lucene-solr/blob/releases/lucene-solr/8.11.1/solr/core/src/java/org/apache/solr/highlight/UnifiedSolrHighlighter.java#L418

// TODO define hl.queryFieldPattern as a more advanced alternative to hl.requireFieldMatch.

Issue Links

• relates to: SOLR-1105 Use a different stored field for highlighting
• relates to: SOLR-9897 Solr UnifiedHighlighter should support hl.requireFieldMatch=false
• relates to: SOLR-16120 optimise glob-free hl.fl expansion
• links to: GitHub Pull Request #757
• links to: GitHub Pull Request #768