From f5d79a0cd5dc12a430d17bbdca7ec5aacb45996c Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Wed, 24 Aug 2011 13:42:04 +0200
Subject: 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.
---
 odb/database.hxx | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'odb/database.hxx')

diff --git a/odb/database.hxx b/odb/database.hxx
index 2e6c79d..5ec98a7 100644
--- a/odb/database.hxx
+++ b/odb/database.hxx
@@ -177,8 +177,8 @@ namespace odb
     // Transactions.
     //
   public:
-    transaction_impl*
-    begin ();
+    virtual transaction_impl*
+    begin () = 0;
 
     // Connections.
     //
-- 
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