From 09d7377f81aeb8fde4aa1698e946457f03380d45 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Mon, 6 May 2013 12:05:39 +0200
Subject: 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.
---
 odb/context.ixx | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 odb/context.ixx

(limited to 'odb/context.ixx')

diff --git a/odb/context.ixx b/odb/context.ixx
new file mode 100644
index 0000000..285d364
--- /dev/null
+++ b/odb/context.ixx
@@ -0,0 +1,27 @@
+// file      : odb/context.ixx
+// copyright : Copyright (c) 2009-2013 Code Synthesis Tools CC
+// license   : GNU GPL v3; see accompanying LICENSE file
+
+inline bool user_section::
+load_empty () const
+{
+  return !separate_load () || (total == 0 && !containers && !optimistic ());
+}
+
+inline bool user_section::
+update_empty () const
+{
+  return total == inverse + readonly && !readwrite_containers;
+}
+
+inline bool user_section::
+optimistic () const
+{
+  if (!context::optimistic (*object))
+    return false;
+  else
+  {
+    semantics::class_* poly_root (context::polymorphic (*object));
+    return poly_root == 0 || poly_root == object;
+  }
+}
-- 
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