Add support for object sections

Sections are an optimization mechanism that allows the partitioning of
data members of a persistent class into groups that can be separately
loaded and/or updated.

1 files changed, 28 insertions, 0 deletions

diff --git a/odb/section.cxx b/odb/section.cxx
new file mode 100644
index 0000000..9ef9c7d
--- /dev/null
+++ b/odb/section.cxx
@@ -0,0 +1,28 @@
+// file      : odb/section.cxx
+// copyright : Copyright (c) 2009-2013 Code Synthesis Tools CC
+// license   : GNU GPL v2; see accompanying LICENSE file
+
+#include <odb/section.hxx>
+
+namespace odb
+{
+  void section::
+  disarm ()
+  {
+    transaction& t (transaction::current ());
+    t.callback_unregister (this);
+    state_.armed = 0;
+  }
+
+  void section::
+  transacion_callback (unsigned short event, void* key, unsigned long long)
+  {
+    section& s (*static_cast<section*> (key));
+
+    if (event == transaction::event_rollback && s.state_.restore)
+      s.state_.changed = 1;
+
+    s.state_.armed = 0;
+    s.state_.restore = 0;
+  }
+}