// file : mapping/traits-mssql.hxx // copyright : not copyrighted - public domain #ifndef TRAITS_MSSQL_HXX #define TRAITS_MSSQL_HXX // // SQL Server implementation. // #include <cstddef> // std::size_t #include <cstring> // std::strncmp, std::memcpy #include <cassert> #include <odb/mssql/traits.hxx> #include "person.hxx" // date namespace odb { namespace mssql { template <> class value_traits<bool, id_string> { public: typedef bool value_type; typedef bool query_type; typedef char* image_type; static void set_value (bool& v, const char* b, std::size_t n, bool is_null) { v = (!is_null && n == 4 && std::strncmp ("true", b, n) == 0); } static void set_image (char* b, std::size_t c, std::size_t& n, bool& is_null, bool v) { is_null = false; n = v ? 4 : 5; assert (n <= c); std::memcpy (b, (v ? "true" : "false"), n); } }; template <> class value_traits< ::date, id_date> { public: typedef ::date value_type; typedef ::date query_type; typedef mssql::date image_type; static void set_value (value_type& v, const image_type& i, bool is_null) { if (!is_null) v = value_type (static_cast<unsigned int> (i.year), i.month, i.day); else v = value_type (0, 0, 0); } static void set_image (image_type& i, bool& is_null, const value_type& v) { is_null = false; i.year = static_cast<SQLSMALLINT> (v.year ()); i.month = static_cast<SQLUSMALLINT> (v.month ()); i.day = static_cast<SQLUSMALLINT> (v.day ()); } }; } } #endif // TRAITS_MSSQL_HXX