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// file : mapping/traits-mysql.hxx
// author : Boris Kolpackov <boris@codesynthesis.com>
// copyright : not copyrighted - public domain
#ifndef TRAITS_MYSQL_HXX
#define TRAITS_MYSQL_HXX
//
// MySQL implementation.
//
#include <cstddef> // std::size_t
#include <cstring> // std::strncmp, std::memcpy
#include <odb/mysql/traits.hxx>
#include "person.hxx" // date
namespace odb
{
namespace mysql
{
template <>
class value_traits<bool, id_string>
{
public:
typedef bool value_type;
typedef bool query_type;
typedef details::buffer image_type;
static void
set_value (bool& v,
const details::buffer& b,
std::size_t n,
bool is_null)
{
v = (!is_null && n == 4 && std::strncmp ("true", b.data (), n) == 0);
}
static void
set_image (details::buffer& b,
std::size_t& n,
bool& is_null,
bool v)
{
is_null = false;
n = v ? 4 : 5;
if (n > b.capacity ())
b.capacity (n);
std::memcpy (b.data (), (v ? "true" : "false"), n);
}
};
template <>
class value_traits<date, id_date>
{
public:
typedef date value_type;
typedef date query_type;
typedef MYSQL_TIME image_type;
static void
set_value (date& v, const MYSQL_TIME& i, bool is_null)
{
if (!is_null)
v = date (i.year, i.month, i.day);
else
v = date (0, 0, 0);
}
static void
set_image (MYSQL_TIME& i, bool& is_null, const date& v)
{
is_null = false;
i.neg = false;
i.year = v.year ();
i.month = v.month ();
i.day = v.day ();
}
};
}
}
#endif // TRAITS_MYSQL_HXX
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