take advantage of inheritence for easier codes

2 files changed, 4 insertions, 4 deletions

diff --git a/lib/arel/engines/memory/relations/writes.rb b/lib/arel/engines/memory/relations/writes.rb
index 12c4f36c0d..39c1170ddc 100644
--- a/lib/arel/engines/memory/relations/writes.rb
+++ b/lib/arel/engines/memory/relations/writes.rb
@@ -1,5 +1,5 @@
 module Arel
-  class Insert < Compound
+  class Insert < Action
     def eval
       unoperated_rows + [Row.new(self, record.values.collect(&:value))]
     end
diff --git a/lib/arel/engines/sql/relations/writes.rb b/lib/arel/engines/sql/relations/writes.rb
index 4ed817f85d..50a2ce2e99 100644
--- a/lib/arel/engines/sql/relations/writes.rb
+++ b/lib/arel/engines/sql/relations/writes.rb
@@ -1,17 +1,17 @@
 module Arel
-  class Deletion < Compound
+  class Deletion < Action
     def to_sql
       compiler.delete_sql
     end
   end
 
-  class Insert < Compound
+  class Insert < Action
     def to_sql(include_returning = true)
       compiler.insert_sql(include_returning)
     end
   end
 
-  class Update < Compound
+  class Update < Insert
     def to_sql
       compiler.update_sql
     end