removing module for faster method lookup

lib/arel/algebra/expression.rb

@@ -20,20 +20,17 @@ def to_sql(formatter = Sql::SelectClause.new(relation))
       formatter.expression self
     end
 
-    module Transformations
-      def as(aliaz)
-        self.class.new(attribute, aliaz, self)
-      end
-
-      def bind(new_relation)
-        new_relation == relation ? self : self.class.new(attribute.bind(new_relation), @alias, self)
-      end
-
-      def to_attribute(relation)
-        Attribute.new(relation, @alias, :ancestor => self)
-      end
+    def as(aliaz)
+      self.class.new(attribute, aliaz, self)
+    end
+
+    def bind(new_relation)
+      new_relation == relation ? self : self.class.new(attribute.bind(new_relation), @alias, self)
+    end
+
+    def to_attribute(relation)
+      Attribute.new(relation, @alias, :ancestor => self)
     end
-    include Transformations
   end
 
   class Count < Expression

spec/algebra/unit/primitives/expression_spec.rb

@@ -7,7 +7,7 @@ module Arel
       @attribute = @relation[:id]
     end
 
-    describe Expression::Transformations do
+    describe 'Expression::Transformations' do
       before do
         @expression = Count.new(@attribute)
       end