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// 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
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