query.rb in neo4j-6.0.0.alpha.1

- old
+ new

@@ -39,15 +39,21 @@
         all_query.limit(1).order('ID(r1) DESC').pluck(:r1).first
       end
 
       private
 
+      def deprecation_warning!
+        ActiveSupport::Deprecation.warn 'The Neo4j::ActiveRel::Query module has been deprecated and will be removed in a future version of the gem.', caller
+      end
+
       def where_query
+        deprecation_warning!
         Neo4j::Session.query.match("#{cypher_string(:outbound)}-[r1:`#{self._type}`]->#{cypher_string(:inbound)}")
       end
 
       def all_query
+        deprecation_warning!
         Neo4j::Session.query.match("#{cypher_string}-[r1:`#{self._type}`]->#{cypher_string(:inbound)}")
       end
 
       def cypher_string(dir = :outbound)
         case dir
@@ -69,9 +75,11 @@
         case given_class
         when String
           given_class.constantize
         when Symbol
           given_class.to_s.constantize
+        when Array
+          fail "ActiveRel query methods are being deprecated and do not support Array (from|to)_class options. Current value: #{given_class}"
         else
           given_class
         end
       end
 