From 51a71bc5cfe38ab7d4789f90725f8a24f49bd057 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Fri, 26 Nov 2010 13:24:00 +0200
Subject: Add support for recursive object loading

If an object of a type needs to be loaded recursively, then it is addded to
the delayed loading list which is processed once the statements are unlocked.
---
 odb/result.txx | 36 ++++++++++++++----------------------
 1 file changed, 14 insertions(+), 22 deletions(-)

(limited to 'odb/result.txx')

diff --git a/odb/result.txx b/odb/result.txx
index 603ee54..1cbf6f7 100644
--- a/odb/result.txx
+++ b/odb/result.txx
@@ -25,20 +25,17 @@ namespace odb
     {
       if (!session::has_current ())
       {
-        // Non-const pointer.
-        //
-        unrestricted_pointer_type p (object_traits::create ());
-        object_type& r (unrestricted_pointer_traits::get_ref (p));
-
-        current (pointer_type (p));
-        current (r);
+        unrestricted_pointer_type up (object_traits::create ());
+        object_type& obj (unrestricted_pointer_traits::get_ref (up));
+        current (pointer_type (up));
+        load (obj);
       }
       else
       {
-        const id_type& id (current_id ());
-
         // First check the session.
         //
+        const id_type& id (load_id ());
+
         pointer_type p (
           pointer_cache_traits<pointer_type>::find (database (), id));
 
@@ -50,14 +47,12 @@ namespace odb
 
           typename
             pointer_cache_traits<unrestricted_pointer_type>::insert_guard ig (
-            pointer_cache_traits<unrestricted_pointer_type>::insert (
-              database (), id, up));
-
-          object_type& r (unrestricted_pointer_traits::get_ref (up));
+              pointer_cache_traits<unrestricted_pointer_type>::insert (
+                database (), id, up));
 
+          object_type& obj (unrestricted_pointer_traits::get_ref (up));
           current (pointer_type (up));
-          current (r);
-
+          load (obj);
           ig.release ();
         }
       }
@@ -72,22 +67,19 @@ namespace odb
 
   template <typename T>
   void result_iterator<T>::
-  load (object_type& x)
+  load (object_type& obj)
   {
     if (res_->end ())
       return;
 
     if (!session::has_current ())
-      res_->current (x);
+      res_->load (obj);
     else
     {
-      const id_type& id (res_->current_id ());
-
       typename reference_cache_traits<object_type>::insert_guard ig (
         reference_cache_traits<object_type>::insert (
-          res_->database (), id, x));
-
-      res_->current (x);
+          res_->database (), res_->load_id (), obj));
+      res_->load (obj);
       ig.release ();
     }
   }
-- 
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