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Diffstat (limited to 'libodb-qt/odb/qt/date-time/sqlite/qdate-traits.hxx')
-rw-r--r-- | libodb-qt/odb/qt/date-time/sqlite/qdate-traits.hxx | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/libodb-qt/odb/qt/date-time/sqlite/qdate-traits.hxx b/libodb-qt/odb/qt/date-time/sqlite/qdate-traits.hxx new file mode 100644 index 0000000..52721b7 --- /dev/null +++ b/libodb-qt/odb/qt/date-time/sqlite/qdate-traits.hxx @@ -0,0 +1,141 @@ +// file : odb/qt/date-time/sqlite/qdate-traits.hxx +// license : GNU GPL v2; see accompanying LICENSE file + +#ifndef ODB_QT_DATE_TIME_SQLITE_QDATE_TRAITS_HXX +#define ODB_QT_DATE_TIME_SQLITE_QDATE_TRAITS_HXX + +#include <odb/pre.hxx> + +#include <string> +#include <cstddef> // std::size_t +#include <cstring> // std::memcpy + +#include <QtCore/QtGlobal> // QT_VERSION + +#include <QtCore/QDate> +#include <QtCore/QDateTime> + +#include <odb/details/buffer.hxx> +#include <odb/sqlite/traits.hxx> +#include <odb/qt/date-time/exceptions.hxx> + +namespace odb +{ + namespace sqlite + { + template <> + struct default_value_traits<QDate, id_text> + { + typedef QDate value_type; + typedef QDate query_type; + typedef details::buffer image_type; + + static void + set_value (QDate& v, + const details::buffer& i, + std::size_t n, + bool is_null) + { + if (is_null) + // A null QDate value is equivalent to an invalid QDate value. + // Set v to an invalid date to represent null. + // + v.setDate (0, 0, 0); + else + v = QDate::fromString ( + QString::fromLatin1 (i.data (), static_cast<int> (n)), + "yyyy-MM-dd"); + } + + static void + set_image (details::buffer& i, + std::size_t& n, + bool& is_null, + const QDate& v) + { + if (v.isNull ()) + is_null = true; + else + { + is_null = false; + + // Cannot use toStdString() here since Qt could have been + // configured without the STL compatibility support. + // + std::string s (v.toString ("yyyy-MM-dd").toLatin1 ().constData ()); + + n = s.size (); + if (n > i.capacity ()) + i.capacity (n); + + std::memcpy (i.data (), s.data (), n); + } + } + }; + + // Implementation of the mapping between QDate and SQLite INTEGER. The + // integer value represents UNIX time. + // + template <> + struct default_value_traits<QDate, id_integer> + { + typedef QDate value_type; + typedef QDate query_type; + typedef long long image_type; + + static void + set_value (QDate& v, long long i, bool is_null) + { + if (is_null) + // A null QDate value is equivalent to an invalid QDate value. + // Set v to an invalid date to represent null. + // + v.setDate (0, 0, 0); + else + { + QDateTime dt; + dt.setTimeSpec (Qt::UTC); + + // *Time_t() functions are deprecated in favor of *SecsSinceEpoch(). + // +#if QT_VERSION < 0x060000 + dt.setTime_t (static_cast<uint> (i)); +#else + dt.setSecsSinceEpoch (static_cast<qint64> (i)); +#endif + v = dt.date (); + } + } + + static void + set_image (long long& i, bool& is_null, const QDate& v) + { + if (v.isNull ()) + is_null = true; + else if (v < QDate (1970, 1, 1)) + throw odb::qt::date_time::value_out_of_range (); + else + { + is_null = false; + const QDateTime dt (v, QTime (0, 0, 0), Qt::UTC); + +#if QT_VERSION < 0x060000 + i = static_cast<long long> (dt.toTime_t ()); +#else + i = static_cast<long long> (dt.toSecsSinceEpoch ()); +#endif + } + } + }; + + template <> + struct default_type_traits<QDate> + { + static const database_type_id db_type_id = id_text; + }; + } +} + +#include <odb/post.hxx> + +#endif // ODB_QT_DATE_TIME_SQLITE_QDATE_TRAITS_HXX |