[LUCENE-7074] Grouping using custom logic

• Type: New Feature
• Status: Patch Available
• Priority: Major
• Resolution: Unresolved
• Fix Version/s: 6.0
• Component/s: core/search
• Labels: features
• Lucene Fields: New
• Assignee: Unassigned
• Reporter: Dean Gurvitz
• Created: 07/Mar/16 18:34
• Updated: 21/Aug/23 16:23

Description

My company would like to enable customized grouping in Lucene/Solr. Our need is to allow grouping by hamming distance between two text field values. We started implementing this idea in Lucene through editing several
classes (Grouping, AbstractTermFirstPassGroupingCollector and AbstractTermSecondPassGroupingCollector)
so that they receive custom logic to use for grouping.