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// file : odb/mysql/traits.hxx
// author : Boris Kolpackov <boris@codesynthesis.com>
// copyright : Copyright (c) 2005-2010 Code Synthesis Tools CC
// license : GNU GPL v2; see accompanying LICENSE file
#ifndef ODB_MYSQL_TRAITS_HXX
#define ODB_MYSQL_TRAITS_HXX
#include <string>
#include <cstddef> // std::size_t
#include <cstring> // std::memcpy
#include <odb/traits.hxx>
namespace odb
{
namespace mysql
{
template <typename T>
struct value_traits: odb::value_traits<T>
{
};
template <>
struct value_traits<std::string>
{
typedef std::string value_type;
static void
set_value (value_type& v, const char* s, std::size_t n, bool is_null)
{
if (!is_null)
v.assign (s, n);
else
v.erase ();
}
static void
set_image (char* s,
std::size_t c,
std::size_t& n,
bool& is_null,
const value_type& v)
{
is_null = false;
n = v.size ();
if (n > c)
n = c;
if (n != 0)
std::memcpy (s, v.c_str (), n);
}
static void
set_image (buffer& b,
std::size_t& n,
bool& is_null,
const value_type& v)
{
is_null = false;
n = v.size ();
if (n > b.capacity ())
b.capacity (n);
if (n != 0)
std::memcpy (b.data (), v.c_str (), n);
}
};
}
}
#endif // ODB_MYSQL_TRAITS_HXX
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