Add support for transaction multiplexing

Also delay getting a connection until after we do all the sanity
checks (e.g., that there is no active transaction). Otherwise we
are running risk of getting blocked rather than throwing an
exception.

1 files changed, 1 insertions, 1 deletions

diff --git a/odb/sqlite/database.hxx b/odb/sqlite/database.hxx
index 13c44e6..348f236 100644
--- a/odb/sqlite/database.hxx
+++ b/odb/sqlite/database.hxx
@@ -87,7 +87,7 @@ namespace odb
       // Transactions.
       //
     public:
-      transaction_impl*
+      virtual transaction_impl*
       begin ();
 
       transaction_impl*