From 290d22210040a7b373e2dc9084240cdeffa1fa3a Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Wed, 21 Mar 2012 08:37:25 +0200
Subject: Polymorphic inheritance support

---
 odb/mssql/polymorphic-object-result.hxx | 92 +++++++++++++++++++++++++++++++++
 1 file changed, 92 insertions(+)
 create mode 100644 odb/mssql/polymorphic-object-result.hxx

(limited to 'odb/mssql/polymorphic-object-result.hxx')

diff --git a/odb/mssql/polymorphic-object-result.hxx b/odb/mssql/polymorphic-object-result.hxx
new file mode 100644
index 0000000..e370661
--- /dev/null
+++ b/odb/mssql/polymorphic-object-result.hxx
@@ -0,0 +1,92 @@
+// file      : odb/mssql/polymorphic-object-result.hxx
+// copyright : Copyright (c) 2009-2012 Code Synthesis Tools CC
+// license   : ODB NCUEL; see accompanying LICENSE file
+
+#ifndef ODB_MSSQL_POLYMORPHIC_OBJECT_RESULT_HXX
+#define ODB_MSSQL_POLYMORPHIC_OBJECT_RESULT_HXX
+
+#include <odb/pre.hxx>
+
+#include <cstddef> // std::size_t
+
+#include <odb/polymorphic-object-result.hxx>
+
+#include <odb/details/shared-ptr.hxx>
+
+#include <odb/mssql/version.hxx>
+#include <odb/mssql/forward.hxx> // query
+#include <odb/mssql/statement.hxx>
+
+namespace odb
+{
+  namespace mssql
+  {
+    template <typename T>
+    class polymorphic_object_result_impl:
+      public odb::polymorphic_object_result_impl<T>
+    {
+    public:
+      typedef odb::polymorphic_object_result_impl<T> base_type;
+
+      typedef typename base_type::object_type object_type;
+      typedef typename base_type::object_traits object_traits;
+      typedef typename base_type::id_type id_type;
+
+      typedef typename base_type::pointer_type pointer_type;
+      typedef typename base_type::pointer_traits pointer_traits;
+
+      typedef typename base_type::root_type root_type;
+      typedef typename base_type::root_traits root_traits;
+      typedef typename base_type::discriminator_type discriminator_type;
+
+      typedef typename object_traits::image_type image_type;
+      typedef typename object_traits::statements_type statements_type;
+
+      virtual
+      ~polymorphic_object_result_impl ();
+
+      polymorphic_object_result_impl (const query&,
+                                      details::shared_ptr<select_statement>,
+                                      statements_type&);
+
+      virtual void
+      load (object_type*, bool fetch);
+
+      virtual id_type
+      load_id ();
+
+      virtual discriminator_type
+      load_discriminator ();
+
+      virtual void
+      next ();
+
+      virtual void
+      cache ();
+
+      virtual std::size_t
+      size ();
+
+      using base_type::current;
+
+    private:
+      typedef mssql::change_callback change_callback_type;
+
+      static void
+      change_callback (void* context);
+
+    private:
+      details::shared_ptr<select_statement> statement_;
+      statements_type& statements_;
+      bool can_load_;
+      bool use_copy_;
+      image_type* image_copy_;
+    };
+  }
+}
+
+#include <odb/mssql/polymorphic-object-result.txx>
+
+#include <odb/post.hxx>
+
+#endif // ODB_MSSQL_POLYMORPHIC_OBJECT_RESULT_HXX
-- 
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