From fc0acda2f0a9f27b490df84de2580306942e42ea Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Thu, 4 Aug 2011 13:33:21 +0200
Subject: Add support for Qt QSharedPointer as value wrapper

---
 odb/qt/smart-ptr.options            |  5 ++++
 odb/qt/smart-ptr/wrapper-traits.hxx | 60 +++++++++++++++++++++++++++++++++++++
 2 files changed, 65 insertions(+)
 create mode 100644 odb/qt/smart-ptr/wrapper-traits.hxx

diff --git a/odb/qt/smart-ptr.options b/odb/qt/smart-ptr.options
index 636b130..f3dfbc6 100644
--- a/odb/qt/smart-ptr.options
+++ b/odb/qt/smart-ptr.options
@@ -14,3 +14,8 @@
 #
 --odb-epilogue '#include <odb/qt/smart-ptr/pointer-traits.hxx>'
 --hxx-prologue '#include <odb/qt/smart-ptr/pointer-traits.hxx>'
+
+# Include wrapper traits.
+#
+--odb-epilogue '#include <odb/qt/smart-ptr/wrapper-traits.hxx>'
+--hxx-prologue '#include <odb/qt/smart-ptr/wrapper-traits.hxx>'
diff --git a/odb/qt/smart-ptr/wrapper-traits.hxx b/odb/qt/smart-ptr/wrapper-traits.hxx
new file mode 100644
index 0000000..1f61b5e
--- /dev/null
+++ b/odb/qt/smart-ptr/wrapper-traits.hxx
@@ -0,0 +1,60 @@
+// file      : odb/qt/smart-ptr/wrapper-traits.hxx
+// author    : Constantin Michael <constantin@codesynthesis.com>
+// copyright : Copyright (c) 2009-2011 Code Synthesis Tools CC
+// license   : GNU GPL v2; see accompanying LICENSE file
+
+#ifndef ODB_QT_SMART_PTR_WRAPPER_TRAITS_HXX
+#define ODB_QT_SMART_PTR_WRAPPER_TRAITS_HXX
+
+#include <odb/pre.hxx>
+
+#include <QtCore/QSharedPointer>
+
+#include <odb/wrapper-traits.hxx>
+
+namespace odb
+{
+  // Specialization for QSharedPointer.
+  //
+  template <typename T>
+  class wrapper_traits< QSharedPointer<T> >
+  {
+  public:
+    typedef T wrapped_type;
+    typedef QSharedPointer<T> wrapper_type;
+
+    static const bool null_handler = true;
+    static const bool null_default = false;
+
+    static bool
+    get_null (const wrapper_type& p)
+    {
+      return p.isNull ();
+    }
+
+    static void
+    set_null (wrapper_type& p)
+    {
+      p.clear ();
+    }
+
+    static const wrapped_type&
+    get_ref (const wrapper_type& p)
+    {
+      return *p;
+    }
+
+    static wrapped_type&
+    set_ref (wrapper_type& p)
+    {
+      if (p.isNull ())
+        p = wrapper_type (new wrapped_type);
+
+      return *p;
+    }
+  };
+}
+
+#include <odb/post.hxx>
+
+#endif // ODB_QT_SMART_PTR_WRAPPER_TRAITS_HXX
-- 
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