[SOLR-3897] Preserve multi-value fields during hit highlighting

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 4.1
• Component/s: highlighter
• Assignee: Yonik Seeley
• Reporter: Joel Bernstein
• Created: 26/Sep/12 21:14
• Updated: 22/Mar/13 16:28
• Resolved: 09/Oct/12 21:20

Description

The behavior of the default Solr hit highlighter on multi-value fields is to only return the values that have a hit and sort them by score.

This ticket supplies a patch that adds a new highlight parameter called "preserveMulti" which can be used on a feild by field basis to return all of the values in their original order. If this parameter is used, the values that have a hit are highlighted and the ones that do not contain a hit are returned un-highlighted.

The "preserveMulti" parameter works with the default standard highlighter and follows the standard highlighting conventions.

Sample usage for a field called "cat":

f.cat.hl.preserveMulti=true