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+// file : odb/qt/date-time/pgsql/qdatetime-traits.hxx
+// license : GNU GPL v2; see accompanying LICENSE file
+
+#ifndef ODB_QT_DATE_TIME_PGSQL_QDATETIME_TRAITS_HXX
+#define ODB_QT_DATE_TIME_PGSQL_QDATETIME_TRAITS_HXX
+
+#include <odb/pre.hxx>
+
+#include <QtCore/QDateTime>
+
+#include <odb/pgsql/traits.hxx>
+
+namespace odb
+{
+ namespace pgsql
+ {
+ // Implementation of mapping between QDateTime and PostgreSQL TIMESTAMP.
+ // TIMESTAMP values are stored as micro-seconds since the PostgreSQL
+ // epoch 2000-01-01.
+ //
+ template <>
+ struct default_value_traits<QDateTime, id_timestamp>
+ {
+ typedef details::endian_traits endian_traits;
+
+ typedef QDateTime value_type;
+ typedef QDateTime query_type;
+ typedef long long image_type;
+
+ static void
+ set_value (QDateTime& v, long long i, bool is_null)
+ {
+ if (is_null)
+ // Default constructor creates a null QDateTime.
+ //
+ v = QDateTime ();
+ else
+ {
+ const QDateTime pg_epoch (QDate (2000, 1, 1), QTime (0, 0, 0));
+ v = pg_epoch.addMSecs (
+ static_cast <qint64> (endian_traits::ntoh (i) / 1000LL));
+ }
+ }
+
+ static void
+ set_image (long long& i, bool& is_null, const QDateTime& v)
+ {
+ if (v.isNull ())
+ is_null = true;
+ else
+ {
+ is_null = false;
+ const QDateTime pg_epoch (QDate (2000, 1, 1), QTime (0, 0, 0));
+ i = endian_traits::hton (
+ static_cast<long long> (pg_epoch.msecsTo (v)) * 1000LL);
+ }
+ }
+ };
+
+ template <>
+ struct default_type_traits<QDateTime>
+ {
+ static const database_type_id db_type_id = id_timestamp;
+ };
+ }
+}
+
+#include <odb/post.hxx>
+
+#endif // ODB_QT_DATE_TIME_PGSQL_QDATETIME_TRAITS_HXX