[jira] [Created] (SOLR-11854) multiValued PrimitiveFieldType should implicitly sort on min/max based on the asc/desc keyword

["Hoss Man (JIRA)" <ji...@apache.org>]

Hoss Man created SOLR-11854:
-------------------------------

             Summary: multiValued PrimitiveFieldType should implicitly sort on min/max based on the asc/desc keyword
                 Key: SOLR-11854
                 URL: https://issues.apache.org/jira/browse/SOLR-11854
             Project: Solr
          Issue Type: Improvement
      Security Level: Public (Default Security Level. Issues are Public)
         Environment: 
Back in SOLR-2522, I added new syntax for (numeric) fields such that the {{field(someMultivaluedFieldName,min|max)}} syntax could be used to select either the min or max value of a multivalued (docvalues) field for use in other functions -- or for sorting.

A little while back, it occured to me that a good "default" behavior for all primative multivalued fields would be:
* automatically use the "min" value when {{sort=someMultivaluedFieldName asc}} is attempted
* automatically use the "max" value when {{sort=someMultivaluedFieldName desc}} is attempted

These defaults seem like they would be a big improvement over the current "throw an error" default behavior -- especially since it naturally reduces down in the trivial case where all docs have at most 1 value anyway -- and would align in practice with how most people I've talked to seem to think "sorting on a multivalued field" should work in theory.   If users don't like these dafaults, they can always use the explicit {{field(foo,min|max)}} syntax instead (ex: if users always want multivalued fields to sort on the 'min' value, regardless of the asc|desc selector)

I've been experimenting with this off and on for a while, working up a POC patch -- I think it's worth doing

(details to follow in comment)

            Reporter: Hoss Man
            Assignee: Hoss Man






--
This message was sent by Atlassian JIRA
(v7.6.3#76005)

---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscribe@lucene.apache.org
For additional commands, e-mail: dev-help@lucene.apache.org