From 93392ca601a0cab8517a4ca8d163df4b41dd3e49 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Sat, 6 Nov 2010 17:57:02 +0200
Subject: Add container traits interface and implementation

Implementation is provided for the standard C++ containers.
---
 odb/std-map-traits.hxx | 130 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 130 insertions(+)
 create mode 100644 odb/std-map-traits.hxx

(limited to 'odb/std-map-traits.hxx')

diff --git a/odb/std-map-traits.hxx b/odb/std-map-traits.hxx
new file mode 100644
index 0000000..4f71868
--- /dev/null
+++ b/odb/std-map-traits.hxx
@@ -0,0 +1,130 @@
+// file      : odb/std-map-traits.hxx
+// author    : Boris Kolpackov <boris@codesynthesis.com>
+// copyright : Copyright (c) 2009-2010 Code Synthesis Tools CC
+// license   : GNU GPL v2; see accompanying LICENSE file
+
+#ifndef ODB_STD_MAP_TRAITS_HXX
+#define ODB_STD_MAP_TRAITS_HXX
+
+#include <odb/pre.hxx>
+
+#include <map>
+
+#include <odb/container-traits.hxx>
+
+namespace odb
+{
+  template <typename K, typename V>
+  class access::container_traits<std::map<K, V> >
+  {
+  public:
+    static container_kind const kind = ck_map;
+
+    typedef K key_type;
+    typedef V value_type;
+    typedef std::map<K, V> container_type;
+    typedef typename container_type::value_type pair_type;
+
+    typedef map_functions<key_type, value_type> functions;
+
+  public:
+    static void
+    persist (const container_type& c, const functions& f)
+    {
+      for (typename container_type::const_iterator i (c.begin ()),
+             e (c.end ()); i != e; ++i)
+        f.insert_one (i->first, i->second);
+    }
+
+    static void
+    load (container_type& c, bool more, const functions& f)
+    {
+      c.clear ();
+
+      while (more)
+      {
+        key_type k;
+        value_type v;
+        more = f.load_all (k, v);
+        c.insert (pair_type (k, v));
+      }
+    }
+
+    static void
+    update (const container_type& c, const functions& f)
+    {
+      f.delete_all ();
+
+      for (typename container_type::const_iterator i (c.begin ()),
+             e (c.end ()); i != e; ++i)
+        f.insert_one (i->first, i->second);
+    }
+
+    static void
+    erase (const functions& f)
+    {
+      f.delete_all ();
+    }
+  };
+
+  // C++-03 does not guarantee insertion order of equal values but C++-0x
+  // changes that. The current implementation in the generated code does
+  // not guarantee this either.
+  //
+  template <typename K, typename V>
+  class access::container_traits<std::multimap<K, V> >
+  {
+  public:
+    static container_kind const kind = ck_multimap;
+
+    typedef K key_type;
+    typedef V value_type;
+    typedef std::multimap<K, V> container_type;
+    typedef typename container_type::value_type pair_type;
+
+    typedef map_functions<key_type, value_type> functions;
+
+  public:
+    static void
+    persist (const container_type& c, const functions& f)
+    {
+      for (typename container_type::const_iterator i (c.begin ()),
+             e (c.end ()); i != e; ++i)
+        f.insert_one (i->first, i->second);
+    }
+
+    static void
+    load (container_type& c, bool more, const functions& f)
+    {
+      c.clear ();
+
+      while (more)
+      {
+        key_type k;
+        value_type v;
+        more = f.load_all (k, v);
+        c.insert (pair_type (k, v));
+      }
+    }
+
+    static void
+    update (const container_type& c, const functions& f)
+    {
+      f.delete_all ();
+
+      for (typename container_type::const_iterator i (c.begin ()),
+             e (c.end ()); i != e; ++i)
+        f.insert_one (i->first, i->second);
+    }
+
+    static void
+    erase (const functions& f)
+    {
+      f.delete_all ();
+    }
+  };
+}
+
+#include <odb/post.hxx>
+
+#endif // ODB_STD_MAP_TRAITS_HXX
-- 
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