[jira] [Created] (SOLR-12559) FunctionQParser.FLAG_USE_FIELDNAME_SOURCE doesn't work when subparsers are involved

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

Hoss Man created SOLR-12559:
-------------------------------

             Summary: FunctionQParser.FLAG_USE_FIELDNAME_SOURCE doesn't work when subparsers are involved
                 Key: SOLR-12559
                 URL: https://issues.apache.org/jira/browse/SOLR-12559
             Project: Solr
          Issue Type: Bug
      Security Level: Public (Default Security Level. Issues are Public)
          Components: Facet Module
            Reporter: Hoss Man


While working on a patch dealing with json facet syntax parsing, i was trying to write a test verifying the equivalence of 2 json facet requests that should be identical and discovered that when SOLR-10613 was implemented to defer the parsing of field names via {{FieldNameValueSource}} the implementation did not account for the invocation of sub parsers via param references.

specifically -- this json facet request will produce two AggValueSources which are not {{equals()}}...

{noformat}
curl http://localhost:8983/solr/query -d 'q=*:*&my_field=foo_i&
json.facet={
  x : "min(foo_i)",
  y : "min($my_field)"
}'
{noformat}

"x" uses {{FieldNameValueSource}} while "y" directly uses an {{IntValueSource}}

(It's not immediately obvious to me if this currently causes any user visible bugs or performance hicups, but it will definitely be problematic for users once we add support for {{min(multivalued_field_i)}} )



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