diff options
Diffstat (limited to 'sqlite/types/traits.hxx')
-rw-r--r-- | sqlite/types/traits.hxx | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/sqlite/types/traits.hxx b/sqlite/types/traits.hxx new file mode 100644 index 0000000..0f9c253 --- /dev/null +++ b/sqlite/types/traits.hxx @@ -0,0 +1,96 @@ +// file : sqlite/types/traits.hxx +// author : Boris Kolpackov <boris@codesynthesis.com> +// copyright : Copyright (c) 2009-2011 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/sqlite/traits.hxx> + +#include "test.hxx" // buffer + +namespace odb +{ + namespace sqlite + { + template <> + class value_traits<buffer, details::buffer, id_blob> + { + public: + typedef buffer value_type; + typedef buffer query_type; + typedef details::buffer image_type; + + static void + set_value (buffer& v, + const details::buffer& b, + std::size_t n, + bool is_null) + { + if (!is_null) + v.assign (b.data (), n); + else + v.assign (0, 0); + } + + static void + set_image (details::buffer& b, + std::size_t& n, + bool& is_null, + const buffer& 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<string_ptr, details::buffer, id_text> + { + 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 |