5 files changed, 24 insertions, 29 deletions
diff --git a/lib/arel/relations.rb b/lib/arel/relations.rb
index 6cd599ad5d..1a216993e0 100644
--- a/lib/arel/relations.rb
+++ b/lib/arel/relations.rb
@@ -4,6 +4,7 @@ require 'arel/relations/nil'
 require 'arel/relations/compound'
 require 'arel/relations/writing'
 require 'arel/relations/table'
+require 'arel/relations/aggregation'
 require 'arel/relations/join'
 require 'arel/relations/grouping'
 require 'arel/relations/projection'
diff --git a/lib/arel/relations/aggregation.rb b/lib/arel/relations/aggregation.rb
new file mode 100644
index 0000000000..7a56834125
--- /dev/null
+++ b/lib/arel/relations/aggregation.rb
@@ -0,0 +1,21 @@
+Aggregation = Struct.new(:relation) do
+  def selects
+    []
+  end
+  
+  def table
+    relation
+  end
+  
+  def relation_for(attribute)
+    relation
+  end
+  
+  def table_sql(formatter = Sql::TableReference.new(relation))
+    relation.to_sql(formatter)
+  end
+  
+  def attributes
+    relation.attributes.collect(&:to_attribute)
+  end
+end
+\ No newline at end of file
diff --git a/lib/arel/relations/compound.rb b/lib/arel/relations/compound.rb
index f0a3392e09..7b6f3a46f8 100644
--- a/lib/arel/relations/compound.rb
+++ b/lib/arel/relations/compound.rb
@@ -4,7 +4,7 @@ module Arel
     hash_on :relation
     delegate :joins, :selects, :orders, :groupings, :inserts, :taken,
              :skipped, :name, :alias, :aggregation?, :column_for,
-             :engine, :name_for, :table, :relation_for, :table_sql,
+             :engine, :table, :relation_for, :table_sql,
              :to => :relation
     
     def attributes
diff --git a/lib/arel/relations/join.rb b/lib/arel/relations/join.rb
index 01e7e36f37..4269731092 100644
--- a/lib/arel/relations/join.rb
+++ b/lib/arel/relations/join.rb
@@ -51,29 +51,7 @@ module Arel
     
     private
     def externalize(relation)
-      Externalizer.new(relation)
-    end
-    
-    Externalizer = Struct.new(:relation) do
-      def selects
-        relation.aggregation?? [] : relation.selects
-      end
-      
-      def table
-        relation.aggregation?? relation : relation.table
-      end
-      
-      def relation_for(attribute)
-        relation.aggregation?? relation : relation.relation_for(attribute)
-      end
-      
-      def table_sql(formatter = Sql::TableReference.new(relation))
-        relation.aggregation?? relation.to_sql(formatter) : relation.table.table_sql(formatter)
-      end
-      
-      def attributes
-        relation.aggregation?? relation.attributes.collect(&:to_attribute) : relation.attributes
-      end
+      relation.aggregation?? Aggregation.new(relation) : relation
     end
   end
 end
 \ No newline at end of file
diff --git a/lib/arel/relations/relation.rb b/lib/arel/relations/relation.rb
index 14d2143a8b..cc0f40ea17 100644
--- a/lib/arel/relations/relation.rb
+++ b/lib/arel/relations/relation.rb
@@ -4,11 +4,6 @@ module Arel
       Session.new
     end
     
-    # INVESTIGATE
-    def name_for(relation)
-      relation.name
-    end
-    
     def to_sql(formatter = Sql::SelectStatement.new(self))
       formatter.select [
         "SELECT     #{attributes.collect { |a| a.to_sql(Sql::SelectClause.new(self)) }.join(', ')}",