moved arel classes/modules to separate files, no functional difference

Author: Anna Carey

lib/active_record/connection_adapters/sqlserver_adapter.rb

@@ -1,5 +1,5 @@
 require 'base64'
-require 'arel/visitors/sqlserver'
+require 'arel/arel_sqlserver'
 require 'arel/visitors/bind_visitor'
 require 'active_record'
 require 'active_record/base'

lib/arel/arel_sqlserver.rb

@@ -0,0 +1,5 @@
+require 'arel'
+require 'arel/select_manager_sqlserver'
+require 'arel/nodes_sqlserver'
+require 'arel/visitors/sqlserver'
+require 'arel/visitors/bind_visitor'

lib/arel/nodes_sqlserver.rb

@@ -0,0 +1,19 @@
+module Arel
+  module Nodes
+
+    # Extending the Ordering class to be comparison friendly which allows us to call #uniq on a
+    # collection of them. See SelectManager#order for more details.
+    class Ordering < Arel::Nodes::Unary
+      def hash
+        expr.hash
+      end
+      def ==(other)
+        other.is_a?(Arel::Nodes::Ordering) && self.expr == other.expr
+      end
+      def eql?(other)
+        self == other
+      end
+    end
+
+  end
+end

lib/arel/visitors/sqlserver.rb

@@ -1,25 +1,4 @@
-require 'arel'
-require 'arel/select_manager_sqlserver'
 module Arel
-
-  module Nodes
-
-    # Extending the Ordering class to be comparison friendly which allows us to call #uniq on a
-    # collection of them. See SelectManager#order for more details.
-    class Ordering < Arel::Nodes::Unary
-      def hash
-        expr.hash
-      end
-      def ==(other)
-        other.is_a?(Arel::Nodes::Ordering) && self.expr == other.expr
-      end
-      def eql?(other)
-        self == other
-      end
-    end
-
-  end
-
   module Visitors
     class SQLServer < Arel::Visitors::ToSql