Core extensions for ActiveRecord now reflect on the connection before doing SQL Server things. Now this adapter is compatible for using with other adapters.

Author: metaskills

CHANGELOG

@@ -1,7 +1,8 @@
 
 MASTER
 
-* 
+* Core extensions for ActiveRecord now reflect on the connection before doing SQL Server things. Now 
+  this adapter is compatible for using with other adapters. [Ken Collins]
 
 
 * 2.2.4 (December 5th, 2008)

lib/active_record/connection_adapters/sqlserver_adapter.rb

@@ -196,6 +196,10 @@ def database_year
         DATABASE_VERSION_REGEXP.match(database_version)[1].to_i
       end
 
+      def sqlserver?
+        true
+      end
+      
       def sqlserver_2000?
         database_year == 2000
       end

lib/core_ext/active_record.rb

@@ -29,36 +29,40 @@ def coerced_sqlserver_time_columns
         end
 
         def reset_column_information_with_sqlserver_cache_support
-          connection.send(:initialize_sqlserver_caches)
+          connection.send(:initialize_sqlserver_caches) if connection.respond_to?(:sqlserver?)
           reset_column_information_without_sqlserver_cache_support
         end
 
         private
 
         def add_order_with_sqlserver_unique_checking!(sql, order, scope = :auto)
-          order_sql = ''
-          add_order_without_sqlserver_unique_checking!(order_sql, order, scope)
-          unless order_sql.blank?
-            unique_order_hash = {}
-            select_table_name = connection.send(:get_table_name,sql)
-            select_table_name.tr!('[]','') if select_table_name
-            orders_and_dirs_set = connection.send(:orders_and_dirs_set,order_sql)
-            unique_order_sql = orders_and_dirs_set.inject([]) do |array,order_dir|
-              ord, dir = order_dir
-              ord_tn_and_cn = ord.to_s.split('.').map{|o|o.tr('[]','')}
-              ord_table_name, ord_column_name = if ord_tn_and_cn.size > 1
-                                                  ord_tn_and_cn
-                                                else
-                                                  [nil, ord_tn_and_cn.first]
-                                                end
-              if (ord_table_name && ord_table_name == select_table_name && unique_order_hash[ord_column_name]) || unique_order_hash[ord_column_name]
-                array
-              else
-                unique_order_hash[ord_column_name] = true
-                array << "#{ord} #{dir}".strip
-              end
-            end.join(', ')
-            sql << " ORDER BY #{unique_order_sql}"
+          if connection.respond_to?(:sqlserver?)
+            order_sql = ''
+            add_order_without_sqlserver_unique_checking!(order_sql, order, scope)
+            unless order_sql.blank?
+              unique_order_hash = {}
+              select_table_name = connection.send(:get_table_name,sql)
+              select_table_name.tr!('[]','') if select_table_name
+              orders_and_dirs_set = connection.send(:orders_and_dirs_set,order_sql)
+              unique_order_sql = orders_and_dirs_set.inject([]) do |array,order_dir|
+                ord, dir = order_dir
+                ord_tn_and_cn = ord.to_s.split('.').map{|o|o.tr('[]','')}
+                ord_table_name, ord_column_name = if ord_tn_and_cn.size > 1
+                                                    ord_tn_and_cn
+                                                  else
+                                                    [nil, ord_tn_and_cn.first]
+                                                  end
+                if (ord_table_name && ord_table_name == select_table_name && unique_order_hash[ord_column_name]) || unique_order_hash[ord_column_name]
+                  array
+                else
+                  unique_order_hash[ord_column_name] = true
+                  array << "#{ord} #{dir}".strip
+                end
+              end.join(', ')
+              sql << " ORDER BY #{unique_order_sql}"
+            end
+          else
+            add_order_without_sqlserver_unique_checking!(order_sql, order, scope)
           end
         end