extract adapter savepoint implementations into `abstract/savepoints.rb`.

1 files changed, 2 insertions, 17 deletions

diff --git a/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb b/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb
index a73a480003..138ab811dc 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb
@@ -3,6 +3,8 @@ require 'arel/visitors/bind_visitor'
 module ActiveRecord
   module ConnectionAdapters
     class AbstractMysqlAdapter < AbstractAdapter
+      include Savepoints
+
       class SchemaCreation < AbstractAdapter::SchemaCreation
 
         def visit_AddColumn(o)
@@ -194,11 +196,6 @@ module ActiveRecord
         true
       end
 
-      # Returns true, since this connection adapter supports savepoints.
-      def supports_savepoints?
-        true
-      end
-
       def supports_bulk_alter? #:nodoc:
         true
       end
@@ -340,18 +337,6 @@ module ActiveRecord
         # Transactions aren't supported
       end
 
-      def create_savepoint(name = current_savepoint_name)
-        execute("SAVEPOINT #{name}")
-      end
-
-      def rollback_to_savepoint(name = current_savepoint_name)
-        execute("ROLLBACK TO SAVEPOINT #{name}")
-      end
-
-      def release_savepoint(name = current_savepoint_name)
-        execute("RELEASE SAVEPOINT #{name}")
-      end
-
       # In the simple case, MySQL allows us to place JOINs directly into the UPDATE
       # query. However, this does not allow for LIMIT, OFFSET and ORDER. To support
       # these, we must use a subquery.