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Diffstat (limited to 'mysql/types/traits.hxx')
| -rw-r--r-- | mysql/types/traits.hxx | 231 |
1 files changed, 231 insertions, 0 deletions
diff --git a/mysql/types/traits.hxx b/mysql/types/traits.hxx new file mode 100644 index 0000000..0db33aa --- /dev/null +++ b/mysql/types/traits.hxx @@ -0,0 +1,231 @@ +// file : mysql/types/traits.hxx +// author : Boris Kolpackov <boris@codesynthesis.com> +// copyright : Copyright (c) 2009-2010 Code Synthesis Tools CC +// 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 + +namespace odb +{ + namespace mysql + { + template <> + class value_traits<date_time> + { + public: + typedef date_time value_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; + } + 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 = 0; + } + }; + + template <> + class value_traits< ::buffer > + { + public: + typedef ::buffer 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.assign (0, 0); + } + + 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.data (), n); + } + + static void + set_image (odb::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.data (), n); + } + }; + + template <> + class value_traits<bitfield> + { + public: + typedef bitfield value_type; + + static void + set_value (bitfield& v, + const unsigned char* s, + std::size_t n, + bool is_null) + { + if (!is_null) + std::memcpy (&v, s, 1); + else + std::memset (&v, 0, sizeof (bitfield)); + } + + static void + set_image (unsigned char* s, + std::size_t c, + std::size_t& n, + bool& is_null, + bitfield v) + { + is_null = false; + n = 1; + std::memcpy (s, &v, 1); + } + }; + + template <> + class value_traits<set> + { + public: + typedef set value_type; + + static void + set_value (set& v, const char* s, std::size_t n, bool is_null) + { + v.clear (); + + if (!is_null) + { + 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 (odb::buffer& buf, + std::size_t& n, + bool& is_null, + const value_type& 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<std::auto_ptr<std::string> > + { + public: + typedef std::auto_ptr<std::string> value_type; + + static void + set_value (std::auto_ptr<std::string>& v, + const char* s, + std::size_t n, + bool is_null) + { + v.reset (is_null ? 0 : new std::string (s, n)); + } + + static void + set_image (odb::buffer& b, + std::size_t& n, + bool& is_null, + const std::auto_ptr<std::string>& 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 |