5 files changed, 13 insertions, 29 deletions
diff --git a/lib/arel.rb b/lib/arel.rb
index 30b3faadf9..92a82b695b 100644
--- a/lib/arel.rb
+++ b/lib/arel.rb
@@ -3,6 +3,8 @@ require 'active_support/core_ext/class/attribute_accessors'
 require 'active_support/core_ext/module/delegation'
 require 'active_support/core_ext/object/blank'
 
+require 'arel/recursion/base_case'
+
 module Arel
   require 'arel/algebra'
   require 'arel/sql_literal'
diff --git a/lib/arel/algebra/relations/utilities/externalization.rb b/lib/arel/algebra/relations/utilities/externalization.rb
index 815e1e0aa7..8e97573f68 100644
--- a/lib/arel/algebra/relations/utilities/externalization.rb
+++ b/lib/arel/algebra/relations/utilities/externalization.rb
@@ -1,5 +1,7 @@
 module Arel
   class Externalization < Compound
+    include Recursion::BaseCase
+
     def == other
       super || Externalization === other && relation == other.relation
     end
@@ -11,5 +13,14 @@ module Arel
     def attributes
       @attributes ||= Header.new(relation.attributes.map { |a| a.to_attribute(self) })
     end
+
+    def table_sql(formatter = Sql::TableReference.new(relation))
+      formatter.select relation.compiler.select_sql, self
+    end
+
+    # REMOVEME
+    def name
+      relation.name + '_external'
+    end
   end
 end
diff --git a/lib/arel/engines/sql/relations.rb b/lib/arel/engines/sql/relations.rb
index b6098a6e42..c29739ef7f 100644
--- a/lib/arel/engines/sql/relations.rb
+++ b/lib/arel/engines/sql/relations.rb
@@ -1,6 +1,4 @@
 require 'arel/engines/sql/relations/utilities/compound'
-require 'arel/engines/sql/relations/utilities/recursion'
-require 'arel/engines/sql/relations/utilities/externalization'
 require 'arel/engines/sql/relations/utilities/nil'
 require 'arel/engines/sql/relations/compiler'
 require 'arel/engines/sql/relations/table'
diff --git a/lib/arel/engines/sql/relations/utilities/externalization.rb b/lib/arel/engines/sql/relations/utilities/externalization.rb
deleted file mode 100644
index a0230e90f3..0000000000
--- a/lib/arel/engines/sql/relations/utilities/externalization.rb
+++ /dev/null
@@ -1,14 +0,0 @@
-module Arel
-  class Externalization < Compound
-    include Recursion::BaseCase
-
-    def table_sql(formatter = Sql::TableReference.new(relation))
-      formatter.select relation.compiler.select_sql, self
-    end
-
-    # REMOVEME
-    def name
-      relation.name + '_external'
-    end
-  end
-end
diff --git a/lib/arel/engines/sql/relations/utilities/recursion.rb b/lib/arel/engines/sql/relations/utilities/recursion.rb
deleted file mode 100644
index 84a526f57c..0000000000
--- a/lib/arel/engines/sql/relations/utilities/recursion.rb
+++ /dev/null
@@ -1,13 +0,0 @@
-module Arel
-  module Recursion
-    module BaseCase
-      def table
-        self
-      end
-
-      def table_sql(formatter = Sql::TableReference.new(self))
-        formatter.table self
-      end
-    end
-  end
-end