Add odb::connection class

This abstract class represents a connection to the database. One can
use it to start a transaction or to execute a native statement out
of a transaction.

Before we had concrete connection classes in the database runtime
libraries (e.g., odb::mysql::connection). Now these classes derive
from odb::connection.

1 files changed, 3 insertions, 3 deletions

diff --git a/odb/mysql/connection-factory.cxx b/odb/mysql/connection-factory.cxx
index 225ef9a..2da8235 100644
--- a/odb/mysql/connection-factory.cxx
+++ b/odb/mysql/connection-factory.cxx
@@ -131,12 +131,12 @@ namespace odb
     // new_connection_factory
     //
 
-    shared_ptr<connection> new_connection_factory::
+    connection_ptr new_connection_factory::
     connect ()
     {
       tls_get (mysql_thread_init_);
 
-      return shared_ptr<connection> (new (shared) connection (*db_));
+      return connection_ptr (new (shared) connection (*db_));
     }
 
     void new_connection_factory::
@@ -164,7 +164,7 @@ namespace odb
       }
     }
 
-    shared_ptr<connection> connection_pool_factory::
+    connection_ptr connection_pool_factory::
     connect ()
     {
       tls_get (mysql_thread_init_);