Can we remove blacklight_advanced_search as a dependency?

[corylown]

The Blacklight Advanced Search gem was added to support Boolean searching as a workaround for a Solr issue, see: #322

We've since updated to newer versions of Solr and switched to the edismax query parser, which supports Boolean operators. We might have to fiddle with the mm settings as we did in DLME: https://github.com/sul-dlss/dlme/blob/main/app/models/search_builder.rb#L21-L32

I do not think we are using any other features of the advanced search gem in exhibits.

[cbeer]

Unfortunately, the edismax notion of boolean operators doesn't align well with user expectations and there's a handful of browse categories (like 100) that probably break without adv search's query parsing, especially the ones that mix boolean operators:

 {"q"=>"virgin OR madonna AND child", "search_field"=>"search"}
 {"search_field"=>"search", "q"=>"europe AND street OR opening"},

These are probably the problematic ones:
Spotlight::Search.pluck(:query_params).select { |x| x && x['q'] && x['q'] =~ / (NOT|AND|OR) /i }