From 25feb0393f8c8a1e9e0e0edf369b10b318a60599 Mon Sep 17 00:00:00 2001
From: Constantin Michael <constantin@codesynthesis.com>
Date: Thu, 27 Oct 2011 15:54:35 +0200
Subject: Implement query image change callback machinery

---
 odb/relational/header.hxx | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'odb/relational/header.hxx')

diff --git a/odb/relational/header.hxx b/odb/relational/header.hxx
index a331b3f..53ff93a 100644
--- a/odb/relational/header.hxx
+++ b/odb/relational/header.hxx
@@ -88,6 +88,11 @@ namespace relational
       }
 
       virtual void
+      image_extra (type&)
+      {
+      }
+
+      virtual void
       traverse (type& c)
       {
         os << "struct image_type";
@@ -106,6 +111,8 @@ namespace relational
         if (!composite (c))
           os << "std::size_t version;";
 
+        image_extra (c);
+
         os << "};";
       }
 
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