New query strategy to join FileSet solr documents

Fixes #6724
The previous attempt to join FileSet documents in the catalog search query failed to actually filter results. Due to a bad
or outdated test, this was not detected when running specs.

Updates the "term search" catalog controller spec to use the `all_fields` search. Prior to this change the spec did not follow
a code path to `join_for_works_from_files`. `all_fields` appears to be set for all queries originating from the hyrax web
interface (others are defined but unused in an unmodified CatalogController), so other specs that specify a `q` param
have had `all_fields` added.

Furthermore, the {!join} query did not have any effect when no FileSet documents are present in the solr index. Without a
FileSet in the mix, bad query results caused by the join were not detected by the spec.

app/search_builders/hyrax/catalog_search_builder.rb

@@ -80,6 +80,12 @@ def dismax_query
 
   # join from file id to work relationship solrized member_ids_ssim
   def join_for_works_from_files
-    "{!join from=#{Hyrax.config.id_field} to=member_ids_ssim v=has_model_ssim:*FileSet}#{dismax_query}"
+    "{!join from=#{Hyrax.config.id_field} to=member_ids_ssim}#{file_set_filter}#{dismax_query}"
+  end
+
+  # Query segment to filter out non-FileSet documents
+  # A wildcard * is used to avoid attempting to escape the :: in Hyrax::FileSet
+  def file_set_filter
+    "{!lucene q.op=AND}has_model_ssim:*FileSet"
   end
 end

spec/controllers/catalog_controller_spec.rb

@@ -38,18 +38,22 @@
       let(:objects) { [collection, rocks, clouds] }
 
       it 'finds collections' do
-        get :index, params: { q: 'rocks' }, xhr: true
+        get :index, params: { q: 'rocks', search_field: 'all_fields' }, xhr: true
         expect(response).to be_successful
         doc_list = assigns(:response).documents
         expect(doc_list.map(&:id)).to match_array [collection.id, rocks.id]
       end
     end
 
     describe 'term search' do
-      let(:objects) { [rocks, clouds] }
+      # An attached fileset needs to be present in the index to trigger the
+      # {!join} in Hyrax::CatalogSearchBuilder#join_for_works_from_files
+      # and ensure it does not interfere with query results
+      let(:unrelated) { valkyrie_create(:monograph, :with_one_file_set, title: ['Unrelated'], read_groups: ['public']) }
+      let(:objects) { [rocks, clouds, unrelated] }
 
       it 'finds works with the given search term' do
-        get :index, params: { q: 'rocks', owner: 'all' }
+        get :index, params: { q: 'rocks', search_field: 'all_fields' }
         expect(response).to be_successful
         expect(response).to render_template('catalog/index')
         expect(assigns(:response).documents.map(&:id)).to contain_exactly(rocks.id)
@@ -74,7 +78,7 @@
       let(:objects) { [rocks, clouds] }
 
       it 'finds matching records' do
-        get :index, params: { q: 'full_textfull_text' }
+        get :index, params: { q: 'full_textfull_text', search_field: 'all_fields' }
         expect(response).to be_successful
         expect(response).to render_template('catalog/index')
         expect(assigns(:response).documents.map(&:id)).to contain_exactly(clouds.id)

spec/search_builders/hyrax/catalog_search_builder_spec.rb

@@ -13,7 +13,7 @@
       it "creates a valid solr join for works and files" do
         subject
         expect(solr_params[:user_query]).to eq user_query
-        expect(solr_params[:q]).to eq '{!lucene}_query_:"{!dismax v=$user_query}" _query_:"{!join from=id to=member_ids_ssim v=has_model_ssim:*FileSet}{!dismax v=$user_query}"'
+        expect(solr_params[:q]).to eq '{!lucene}_query_:"{!dismax v=$user_query}" _query_:"{!join from=id to=member_ids_ssim}{!lucene q.op=AND}has_model_ssim:*FileSet{!dismax v=$user_query}"'
       end
     end