From 759c865ebbdf8401e58ef5df705f9d1ad3d83cc9 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Mon, 22 Nov 2010 14:18:40 +0200
Subject: Implement support for one-to-{one,many} inverse relationships

New pragma: inverse.
---
 odb/context.hxx | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

(limited to 'odb/context.hxx')

diff --git a/odb/context.hxx b/odb/context.hxx
index 4d6dd10..8878e54 100644
--- a/odb/context.hxx
+++ b/odb/context.hxx
@@ -75,7 +75,8 @@ public:
   }
 
   static semantics::class_*
-  object_pointer (semantics::data_member& m, string const& key_prefix)
+  object_pointer (semantics::data_member& m,
+                  string const& key_prefix = string ())
   {
     using semantics::class_;
 
@@ -84,6 +85,18 @@ public:
       : m.get<class_*> (key_prefix + "-object-pointer", 0);
   }
 
+  static semantics::data_member*
+  inverse (semantics::data_member& m, string const& key_prefix = string ())
+  {
+    using semantics::data_member;
+
+    return object_pointer (m, key_prefix)
+      ? (key_prefix.empty ()
+         ? m.get<data_member*> ("inverse", 0)
+         : m.get<data_member*> (key_prefix + "-inverse", 0))
+      : 0;
+  }
+
   // Database names and types.
   //
 public:
@@ -94,6 +107,9 @@ public:
   //
   struct table_prefix
   {
+    table_prefix () {}
+    table_prefix (string const& p, size_t l): prefix (p), level (l) {}
+
     string prefix;
     size_t level;
   };
-- 
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