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diff --git a/odb/boost/date-time/sqlite/gregorian-traits.hxx b/odb/boost/date-time/sqlite/gregorian-traits.hxx
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+++ b/odb/boost/date-time/sqlite/gregorian-traits.hxx
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+// file      : odb/boost/date-time/sqlite/gregorian-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_BOOST_DATE_TIME_SQLITE_GREGORIAN_TRAITS_HXX
+#define ODB_BOOST_DATE_TIME_SQLITE_GREGORIAN_TRAITS_HXX
+
+#include <odb/pre.hxx>
+
+#include <string>
+#include <cstddef>  // std::size_t
+#include <cstring>  // std::memcpy
+#include <ctime>    // std::time_t
+
+#include <boost/date_time/gregorian/gregorian_types.hpp>    // date
+#include <boost/date_time/posix_time/posix_time_types.hpp>  // time_duration
+#include <boost/date_time/gregorian/parsers.hpp>      // from_simple_string
+#include <boost/date_time/gregorian/formatters.hpp>   // to_iso_extended_string
+#include <boost/date_time/posix_time/conversion.hpp>  // from_time_t
+
+#include <odb/core.hxx>
+#include <odb/details/buffer.hxx>
+#include <odb/sqlite/traits.hxx>
+
+#include <odb/boost/date-time/exceptions.hxx>
+
+namespace odb
+{
+  namespace sqlite
+  {
+    template <>
+    class default_value_traits<
+      ::boost::gregorian::date, details::buffer, id_text>
+    {
+    public:
+      typedef ::boost::gregorian::date date;
+      typedef date value_type;
+      typedef date query_type;
+      typedef details::buffer image_type;
+
+      static void
+      set_value (date& v,
+                 const details::buffer& i,
+                 std::size_t n,
+                 bool is_null)
+      {
+        if (is_null)
+          v = date (::boost::date_time::not_a_date_time);
+        else
+          v = ::boost::gregorian::from_simple_string (
+            std::string (i.data (), n));
+      }
+
+      static void
+      set_image (details::buffer& i,
+                 std::size_t& n,
+                 bool& is_null,
+                 const date& v)
+      {
+        if (v.is_special ())
+        {
+          if (v.is_not_a_date ())
+            is_null = true;
+          else
+            throw odb::boost::date_time::special_value ();
+        }
+        else
+        {
+          is_null = false;
+
+          const std::string& s (
+            ::boost::gregorian::to_iso_extended_string (v));
+
+          n = s.size ();
+
+          if (n > i.capacity ())
+            i.capacity (n);
+
+          std::memcpy (i.data (), s.data (), n);
+        }
+      }
+    };
+
+    template <>
+    class default_value_traits<
+      ::boost::gregorian::date, long long, id_integer>
+    {
+    public:
+      typedef ::boost::gregorian::date date;
+      typedef ::boost::posix_time::time_duration time_duration;
+      typedef ::boost::posix_time::ptime ptime;
+      typedef date value_type;
+      typedef date query_type;
+      typedef long long image_type;
+
+      static void
+      set_value (date& v, long long i, bool is_null)
+      {
+        if (is_null)
+          v = date (::boost::date_time::not_a_date_time);
+        else
+          v = ::boost::posix_time::from_time_t (
+            static_cast<std::time_t> (i)).date ();
+      }
+
+      static void
+      set_image (long long& i, bool& is_null, const date& v)
+      {
+        if (v.is_special ())
+        {
+          if (v.is_not_a_date ())
+            is_null = true;
+          else
+            throw odb::boost::date_time::special_value ();
+        }
+        else
+        {
+          is_null = false;
+
+          ptime epoch (date (1970, 1, 1), time_duration (0, 0, 0));
+          i = static_cast<long long> (
+            (ptime (v, time_duration (0, 0, 0)) - epoch).ticks () /
+            time_duration::ticks_per_second ());
+        }
+      }
+    };
+  }
+}
+
+#include <odb/post.hxx>
+
+#endif // ODB_BOOST_DATE_TIME_SQLITE_GREGORIAN_TRAITS_HXX