Add recoverable, connection_lost, and timeout exceptions

The deadlock exception now inherits from recoverable. New manual section:
3.5, "Error Handling and Recovery".

1 files changed, 4 insertions, 2 deletions

diff --git a/odb/mysql/error.cxx b/odb/mysql/error.cxx
index 94a41b2..4700d12 100644
--- a/odb/mysql/error.cxx
+++ b/odb/mysql/error.cxx
@@ -33,10 +33,12 @@ namespace odb
         }
       case CR_SERVER_LOST:
       case CR_SERVER_GONE_ERROR:
+        {
+          c.mark_failed ();
+          throw connection_lost ();
+        }
       case CR_UNKNOWN_ERROR:
         {
-          // This connection is no longer usable.
-          //
           c.mark_failed ();
           // Fall through.
         }