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+// file : mysql/types/traits.hxx
+// license : GNU GPL v2; see accompanying LICENSE file
+
+#ifndef TRAITS_HXX
+#define TRAITS_HXX
+
+#include <cstring> // std::memcpy, std::memset
+
+#include <odb/mysql/traits.hxx>
+
+#include "test.hxx" // date_time, string_ptr
+
+namespace odb
+{
+ namespace mysql
+ {
+ template <database_type_id ID>
+ class value_traits<date_time, ID>
+ {
+ public:
+ typedef date_time value_type;
+ typedef date_time query_type;
+ typedef MYSQL_TIME image_type;
+
+ static void
+ set_value (date_time& v, const MYSQL_TIME& i, bool is_null)
+ {
+ if (!is_null)
+ {
+ v.negative = i.neg;
+ v.year = i.year;
+ v.month = i.month;
+ v.day = i.day;
+ v.hour = i.hour;
+ v.minute = i.minute;
+ v.second = i.second;
+ v.microseconds = static_cast<unsigned int> (i.second_part);
+ }
+ else
+ v = date_time ();
+ }
+
+ static void
+ set_image (MYSQL_TIME& i, bool& is_null, const date_time& v)
+ {
+ is_null = false;
+ i.neg = v.negative;
+ i.year = v.year;
+ i.month = v.month;
+ i.day = v.day;
+ i.hour = v.hour;
+ i.minute = v.minute;
+ i.second = v.second;
+ i.second_part = v.microseconds;
+ }
+ };
+
+ template <>
+ class value_traits<bitfield, id_bit>
+ {
+ public:
+ typedef bitfield value_type;
+ typedef bitfield query_type;
+ typedef unsigned char* image_type;
+
+ static void
+ set_value (bitfield& v,
+ const unsigned char* s,
+ std::size_t,
+ bool is_null)
+ {
+ if (!is_null)
+ {
+ v.a = *s & 1;
+ v.b = (*s >> 1) & 1;
+ v.c = (*s >> 2) & 1;
+ v.d = (*s >> 3) & 1;
+ }
+ else
+ v.a = v.b = v.c = v.d = 0;
+ }
+
+ static void
+ set_image (unsigned char* s,
+ std::size_t,
+ std::size_t& n,
+ bool& is_null,
+ bitfield v)
+ {
+ is_null = false;
+ n = 1;
+ *s = v.a | (v.b << 1) | (v.c << 2) | (v.d << 3);
+ }
+ };
+
+ template <>
+ class value_traits<set, id_set>
+ {
+ public:
+ typedef set value_type;
+ typedef set query_type;
+ typedef details::buffer image_type;
+
+ static void
+ set_value (set& v,
+ const details::buffer& b,
+ std::size_t n,
+ bool is_null)
+ {
+ v.clear ();
+
+ if (!is_null)
+ {
+ const char* s (b.data ());
+ const char* e (s + n);
+
+ while (s < e)
+ {
+ const char* p (s);
+
+ while (p < e && *p != ',')
+ ++p;
+
+ v.insert (std::string (s, p - s));
+ s = p;
+
+ if (p != e)
+ ++s;
+ }
+ }
+ }
+
+ static void
+ set_image (details::buffer& buf,
+ std::size_t& n,
+ bool& is_null,
+ const set& v)
+ {
+ is_null = false;
+ n = 0;
+
+ for (set::const_iterator b (v.begin ()), i (b); i != v.end (); ++i)
+ {
+ std::size_t m (i->size () + (i != b ? 1 : 0));
+
+ if (n + m > buf.capacity ())
+ buf.capacity (n + m, n);
+
+ if (i != b)
+ buf.data ()[n++] = ',';
+
+ std::memcpy (buf.data () + n, i->c_str (), i->size ());
+ n += i->size ();
+ }
+ }
+ };
+
+ template <>
+ class value_traits<string_ptr, id_string>
+ {
+ public:
+ typedef string_ptr value_type;
+ typedef std::string query_type;
+ typedef details::buffer image_type;
+
+ static void
+ set_value (string_ptr& v,
+ const details::buffer& b,
+ std::size_t n,
+ bool is_null)
+ {
+ v.reset (is_null ? 0 : new std::string (b.data (), n));
+ }
+
+ static void
+ set_image (details::buffer& b,
+ std::size_t& n,
+ bool& is_null,
+ const string_ptr& v)
+ {
+ is_null = v.get () == 0;
+
+ if (!is_null)
+ {
+ n = v->size ();
+
+ if (n > b.capacity ())
+ b.capacity (n);
+
+ if (n != 0)
+ std::memcpy (b.data (), v->c_str (), n);
+ }
+ }
+ };
+ }
+}
+
+#endif // TRAITS_HXX