Edismax query parsing in Solr 4 vs Solr 6

[Max Bridgewater]

I am migrating a solr based app from Solr 4 to Solr 6.  One of the
discrepancies I am noticing is around edismax query parsing. My code makes
the following call:


 userQuery="+(title:shirts isbn:shirts) +(id:20446 id:82876)"
  Query query=QParser.getParser(userQuery, "edismax", req).getQuery();


With Solr 4, query becomes:

+(+(title:shirt isbn:shirts) +(id:20446 id:82876))

With Solr 6 it however becomes:

+(+(+title:shirt +isbn:shirts) +(+id:20446 +id:82876))

Digging deeper, it appears that parseOriginalQuery() in
ExtendedDismaxQParser is adding those additional + signs.


Is there a way to prevent this altering of queries?

Thanks,
Max.