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Diffstat (limited to 'odb/pgsql/traits.hxx')
-rw-r--r-- | odb/pgsql/traits.hxx | 944 |
1 files changed, 0 insertions, 944 deletions
diff --git a/odb/pgsql/traits.hxx b/odb/pgsql/traits.hxx deleted file mode 100644 index 3d87033..0000000 --- a/odb/pgsql/traits.hxx +++ /dev/null @@ -1,944 +0,0 @@ -// file : odb/pgsql/traits.hxx -// license : GNU GPL v2; see accompanying LICENSE file - -#ifndef ODB_PGSQL_TRAITS_HXX -#define ODB_PGSQL_TRAITS_HXX - -#include <odb/pre.hxx> - -#include <odb/details/config.hxx> // ODB_CXX11 - -#include <string> -#include <vector> -#include <cstddef> // std::size_t -#include <cstring> // std::memcpy, std::memset, std::strlen - -#ifdef ODB_CXX11 -# include <array> -#endif - -#include <odb/traits.hxx> -#include <odb/wrapper-traits.hxx> - -#include <odb/details/buffer.hxx> -#include <odb/details/wrapper-p.hxx> - -#include <odb/pgsql/version.hxx> -#include <odb/pgsql/pgsql-types.hxx> - -#include <odb/pgsql/details/export.hxx> -#include <odb/pgsql/details/endian-traits.hxx> - -namespace odb -{ - namespace pgsql - { - enum database_type_id - { - id_boolean, - id_smallint, - id_integer, - id_bigint, - - id_numeric, // Internal PostgreSQL binary representation. - - id_real, - id_double, - - id_date, - id_time, - id_timestamp, - - id_string, - id_bytea, - id_bit, - id_varbit, - - id_uuid - }; - - // - // image_traits - // - - template <database_type_id> - struct image_traits; - - template <> - struct image_traits<id_boolean> {typedef bool image_type;}; - - template <> - struct image_traits<id_smallint> {typedef short image_type;}; - - template <> - struct image_traits<id_integer> {typedef int image_type;}; - - template <> - struct image_traits<id_bigint> {typedef long long image_type;}; - - template <> - struct image_traits<id_numeric> {typedef details::buffer image_type;}; - - template <> - struct image_traits<id_real> {typedef float image_type;}; - - template <> - struct image_traits<id_double> {typedef double image_type;}; - - template <> - struct image_traits<id_date> {typedef int image_type;}; - - template <> - struct image_traits<id_time> {typedef long long image_type;}; - - template <> - struct image_traits<id_timestamp> {typedef long long image_type;}; - - template <> - struct image_traits<id_string> {typedef details::buffer image_type;}; - - template <> - struct image_traits<id_bytea> {typedef details::buffer image_type;}; - - template <> - struct image_traits<id_bit> {typedef unsigned char* image_type;}; - - template <> - struct image_traits<id_varbit> {typedef details::ubuffer image_type;}; - - // UUID image is a 16-byte sequence. - // - template <> - struct image_traits<id_uuid> {typedef unsigned char* image_type;}; - - // - // value_traits - // - - template <typename W, database_type_id, bool null_handler> - struct wrapped_value_traits; - - template <typename T, database_type_id> - struct default_value_traits; - - template <typename T, database_type_id, bool w = details::wrapper_p<T>::r> - struct select_traits; - - template <typename T, database_type_id ID> - struct select_traits<T, ID, false> - { - typedef default_value_traits<T, ID> type; - }; - - template <typename W, database_type_id ID> - struct select_traits<W, ID, true> - { - typedef - wrapped_value_traits<W, ID, wrapper_traits<W>::null_handler> - type; - }; - - template <typename T, database_type_id ID> - class value_traits: public select_traits<T, ID>::type - { - }; - - // The wrapped_value_traits specializations should be able to handle - // any value type which means we have to have every possible signature - // of the set_value() and set_image() functions. - // - template <typename W, database_type_id ID> - struct wrapped_value_traits<W, ID, false> - { - typedef wrapper_traits<W> wtraits; - typedef typename wtraits::unrestricted_wrapped_type wrapped_type; - - typedef W value_type; - typedef wrapped_type query_type; - typedef typename image_traits<ID>::image_type image_type; - - typedef value_traits<wrapped_type, ID> vtraits; - - static void - set_value (W& v, const image_type& i, bool is_null) - { - vtraits::set_value (wtraits::set_ref (v), i, is_null); - } - - static void - set_image (image_type& i, bool& is_null, const W& v) - { - vtraits::set_image (i, is_null, wtraits::get_ref (v)); - } - - // String, BYTEA, and NUMERIC. - // - static void - set_value (W& v, const details::buffer& b, std::size_t n, bool is_null) - { - vtraits::set_value (wtraits::set_ref (v), b, n, is_null); - } - - static void - set_image (details::buffer& b, std::size_t& n, bool& is_null, const W& v) - { - vtraits::set_image (b, n, is_null, wtraits::get_ref (v)); - } - - // BIT. - // - static void - set_value (W& v, const unsigned char* i, std::size_t n, bool is_null) - { - vtraits::set_value (wtraits::set_ref (v), i, n, is_null); - } - - static void - set_image (unsigned char* i, - std::size_t c, - std::size_t& n, - bool& is_null, - const W& v) - { - vtraits::set_image (i, c, n, is_null, wtraits::get_ref (v)); - } - - // VARBIT. - // - static void - set_value (W& v, const details::ubuffer& b, std::size_t n, bool is_null) - { - vtraits::set_value (wtraits::set_ref (v), b, n, is_null); - } - - static void - set_image (details::ubuffer& b, - std::size_t& n, - bool& is_null, - const W& v) - { - vtraits::set_image (b, n, is_null, wtraits::get_ref (v)); - } - - // UUID. - // - static void - set_value (W& v, const unsigned char* i, bool is_null) - { - vtraits::set_value (wtraits::set_ref (v), i, is_null); - } - - static void - set_image (unsigned char* i, bool& is_null, const W& v) - { - vtraits::set_image (i, is_null, wtraits::get_ref (v)); - } - }; - - template <typename W, database_type_id ID> - struct wrapped_value_traits<W, ID, true> - { - typedef wrapper_traits<W> wtraits; - typedef typename wtraits::unrestricted_wrapped_type wrapped_type; - - typedef W value_type; - typedef wrapped_type query_type; - typedef typename image_traits<ID>::image_type image_type; - - typedef value_traits<wrapped_type, ID> vtraits; - - static void - set_value (W& v, const image_type& i, bool is_null) - { - if (is_null) - wtraits::set_null (v); - else - vtraits::set_value (wtraits::set_ref (v), i, is_null); - } - - static void - set_image (image_type& i, bool& is_null, const W& v) - { - is_null = wtraits::get_null (v); - - if (!is_null) - vtraits::set_image (i, is_null, wtraits::get_ref (v)); - } - - // String, BYTEA, and NUMERIC. - // - static void - set_value (W& v, const details::buffer& b, std::size_t n, bool is_null) - { - if (is_null) - wtraits::set_null (v); - else - vtraits::set_value (wtraits::set_ref (v), b, n, is_null); - } - - static void - set_image (details::buffer& b, std::size_t& n, bool& is_null, const W& v) - { - is_null = wtraits::get_null (v); - - if (!is_null) - vtraits::set_image (b, n, is_null, wtraits::get_ref (v)); - } - - // BIT. - // - static void - set_value (W& v, const unsigned char* i, std::size_t n, bool is_null) - { - if (is_null) - wtraits::set_null (v); - else - vtraits::set_value (wtraits::set_ref (v), i, n, is_null); - } - - static void - set_image (unsigned char* i, - std::size_t c, - std::size_t& n, - bool& is_null, - const W& v) - { - is_null = wtraits::get_null (v); - - if (!is_null) - vtraits::set_image (i, c, n, is_null, wtraits::get_ref (v)); - } - - // VARBIT. - // - static void - set_value (W& v, const details::ubuffer& b, std::size_t n, bool is_null) - { - if (is_null) - wtraits::set_null (v); - else - vtraits::set_value (wtraits::set_ref (v), b, n, is_null); - } - - static void - set_image (details::ubuffer& b, std::size_t& n, bool& is_null, const W& v) - { - is_null = wtraits::get_null (v); - - if (!is_null) - vtraits::set_image (b, n, is_null, wtraits::get_ref (v)); - } - - // UUID. - // - static void - set_value (W& v, const unsigned char* i, bool is_null) - { - if (is_null) - wtraits::set_null (v); - else - vtraits::set_value (wtraits::set_ref (v), i, is_null); - } - - static void - set_image (unsigned char* i, bool& is_null, const W& v) - { - is_null = wtraits::get_null (v); - - if (!is_null) - vtraits::set_image (i, is_null, wtraits::get_ref (v)); - } - }; - - template <typename T, database_type_id ID> - struct default_value_traits - { - typedef T value_type; - typedef T query_type; - typedef typename image_traits<ID>::image_type image_type; - - static void - set_value (T& v, const image_type& i, bool is_null) - { - if (!is_null) - v = T (details::endian_traits::ntoh (i)); - else - v = T (); - } - - static void - set_image (image_type& i, bool& is_null, T v) - { - is_null = false; - i = details::endian_traits::hton (image_type (v)); - } - }; - - // std::string specialization. - // - template <> - struct LIBODB_PGSQL_EXPORT default_value_traits<std::string, id_string> - { - typedef std::string value_type; - typedef std::string query_type; - typedef details::buffer image_type; - - static void - set_value (std::string& v, - const details::buffer& b, - std::size_t n, - bool is_null) - { - if (!is_null) - v.assign (b.data (), n); - else - v.erase (); - } - - static void - set_image (details::buffer&, - std::size_t& n, - bool& is_null, - const std::string&); - }; - - // char*/const char* specialization - // - // Specialization for const char* which only supports initialization - // of an image from the value but not the other way around. This way - // we can pass such values to the queries. - // - class LIBODB_PGSQL_EXPORT c_string_value_traits - { - public: - typedef const char* value_type; - typedef details::buffer image_type; - - static void - set_image (details::buffer&, - std::size_t& n, - bool& is_null, - const char*); - }; - - template <> - struct default_value_traits<char*, id_string>: c_string_value_traits {}; - - template <> - struct default_value_traits<const char*, id_string>: - c_string_value_traits {}; - - // char[N] specializations. - // - struct LIBODB_PGSQL_EXPORT c_array_value_traits_base - { - static void - set_value (char* const& v, - const details::buffer& b, - std::size_t n, - bool is_null, - std::size_t N); - - static void - set_image (details::buffer& b, - std::size_t& n, - bool& is_null, - const char* v, - std::size_t N); - }; - - template <std::size_t N> - struct default_value_traits<char[N], id_string> - { - typedef char* value_type; - typedef char query_type[N]; - typedef details::buffer image_type; - - static void - set_value (char* const& v, - const details::buffer& b, - std::size_t n, - bool is_null) - { - c_array_value_traits_base::set_value (v, b, n, is_null, N); - } - - static void - set_image (details::buffer& b, - std::size_t& n, - bool& is_null, - const char* v) - { - c_array_value_traits_base::set_image (b, n, is_null, v, N); - } - }; - - // std::array<char, N> (string) specialization. - // -#ifdef ODB_CXX11 - template <std::size_t N> - struct default_value_traits<std::array<char, N>, id_string> - { - typedef std::array<char, N> value_type; - typedef std::array<char, N> query_type; - typedef details::buffer image_type; - - static void - set_value (value_type& v, - const details::buffer& b, - std::size_t n, - bool is_null) - { - c_array_value_traits_base::set_value (v.data (), b, n, is_null, N); - } - - static void - set_image (details::buffer& b, - std::size_t& n, - bool& is_null, - const value_type& v) - { - c_array_value_traits_base::set_image (b, n, is_null, v.data (), N); - } - }; -#endif - - // char specialization. - // - template <> - struct default_value_traits<char, id_string> - { - typedef char value_type; - typedef char query_type; - typedef details::buffer image_type; - - static void - set_value (char& v, - const details::buffer& b, - std::size_t n, - bool is_null) - { - c_array_value_traits_base::set_value (&v, b, n, is_null, 1); - } - - static void - set_image (details::buffer& b, - std::size_t& n, - bool& is_null, - char v) - { - c_array_value_traits_base::set_image (b, n, is_null, &v, 1); - } - }; - - // std::vector<char> (buffer) specialization. - // - template <> - struct LIBODB_PGSQL_EXPORT default_value_traits< - std::vector<char>, id_bytea> - { - public: - typedef std::vector<char> value_type; - typedef std::vector<char> query_type; - typedef details::buffer image_type; - - static void - set_value (value_type& v, - const details::buffer& b, - std::size_t n, - bool is_null) - { - if (!is_null) - v.assign (b.data (), b.data () + n); - else - v.clear (); - } - - static void - set_image (details::buffer&, - std::size_t& n, - bool& is_null, - const value_type&); - }; - - // std::vector<unsigned char> (buffer) specialization. - // - template <> - struct LIBODB_PGSQL_EXPORT default_value_traits< - std::vector<unsigned char>, id_bytea> - { - public: - typedef std::vector<unsigned char> value_type; - typedef std::vector<unsigned char> query_type; - typedef details::buffer image_type; - - static void - set_value (value_type& v, - const details::buffer& b, - std::size_t n, - bool is_null) - { - if (!is_null) - { - const unsigned char* d ( - reinterpret_cast<const unsigned char*> (b.data ())); - v.assign (d, d + n); - } - else - v.clear (); - } - - static void - set_image (details::buffer&, - std::size_t& n, - bool& is_null, - const value_type&); - }; - - // char[N] (buffer) specialization. - // - template <std::size_t N> - struct default_value_traits<char[N], id_bytea> - { - public: - typedef char* value_type; - typedef char query_type[N]; - typedef details::buffer image_type; - - static void - set_value (char* const& v, - const details::buffer& b, - std::size_t n, - bool is_null) - { - if (!is_null) - std::memcpy (v, b.data (), (n < N ? n : N)); - else - std::memset (v, 0, N); - } - - static void - set_image (details::buffer& b, - std::size_t& n, - bool& is_null, - const char* v) - { - is_null = false; - n = N; - - if (n > b.capacity ()) - b.capacity (n); - - std::memcpy (b.data (), v, n); - } - }; - - // unsigned char[N] (buffer) specialization. - // - template <std::size_t N> - struct default_value_traits<unsigned char[N], id_bytea> - { - public: - typedef unsigned char* value_type; - typedef unsigned char query_type[N]; - typedef details::buffer image_type; - - static void - set_value (unsigned char* const& v, - const details::buffer& b, - std::size_t n, - bool is_null) - { - if (!is_null) - std::memcpy (v, b.data (), (n < N ? n : N)); - else - std::memset (v, 0, N); - } - - static void - set_image (details::buffer& b, - std::size_t& n, - bool& is_null, - const unsigned char* v) - { - is_null = false; - n = N; - - if (n > b.capacity ()) - b.capacity (n); - - std::memcpy (b.data (), v, n); - } - }; - -#ifdef ODB_CXX11 - // std::array<char, N> (buffer) specialization. - // - template <std::size_t N> - struct default_value_traits<std::array<char, N>, id_bytea> - { - public: - typedef std::array<char, N> value_type; - typedef value_type query_type; - typedef details::buffer image_type; - - static void - set_value (value_type& v, - const details::buffer& b, - std::size_t n, - bool is_null) - { - if (!is_null) - std::memcpy (v.data (), b.data (), (n < N ? n : N)); - else - std::memset (v.data (), 0, N); - } - - static void - set_image (details::buffer& b, - std::size_t& n, - bool& is_null, - const value_type& v) - { - is_null = false; - n = N; - - if (n > b.capacity ()) - b.capacity (n); - - std::memcpy (b.data (), v.data (), n); - } - }; - - // std::array<unsigned char, N> (buffer) specialization. - // - template <std::size_t N> - struct default_value_traits<std::array<unsigned char, N>, id_bytea> - { - public: - typedef std::array<unsigned char, N> value_type; - typedef value_type query_type; - typedef details::buffer image_type; - - static void - set_value (value_type& v, - const details::buffer& b, - std::size_t n, - bool is_null) - { - if (!is_null) - std::memcpy (v.data (), b.data (), (n < N ? n : N)); - else - std::memset (v.data (), 0, N); - } - - static void - set_image (details::buffer& b, - std::size_t& n, - bool& is_null, - const value_type& v) - { - is_null = false; - n = N; - - if (n > b.capacity ()) - b.capacity (n); - - std::memcpy (b.data (), v.data (), n); - } - }; -#endif - - // char[16] specialization for uuid. - // - template <> - struct default_value_traits<char[16], id_uuid> - { - typedef char* value_type; - typedef char query_type[16]; - typedef unsigned char* image_type; - - static void - set_value (char* const& v, const unsigned char* i, bool is_null) - { - if (!is_null) - std::memcpy (v, i, 16); - else - std::memset (v, 0, 16); - } - - static void - set_image (unsigned char* i, bool& is_null, const char* v) - { - is_null = false; - std::memcpy (i, v, 16); - } - }; - - // - // type_traits - // - - template <typename T> - struct default_type_traits; - - template <typename T> - class type_traits: public default_type_traits<T> - { - }; - - // Integral types. - // - template <> - struct default_type_traits<bool> - { - static const database_type_id db_type_id = id_boolean; - }; - - template <> - struct default_type_traits<signed char> - { - static const database_type_id db_type_id = id_smallint; - }; - - template <> - struct default_type_traits<unsigned char> - { - static const database_type_id db_type_id = id_smallint; - }; - - template <> - struct default_type_traits<short> - { - static const database_type_id db_type_id = id_smallint; - }; - - template <> - struct default_type_traits<unsigned short> - { - static const database_type_id db_type_id = id_smallint; - }; - - template <> - struct default_type_traits<int> - { - static const database_type_id db_type_id = id_integer; - }; - - template <> - struct default_type_traits<unsigned int> - { - static const database_type_id db_type_id = id_integer; - }; - - template <> - struct default_type_traits<long> - { - static const database_type_id db_type_id = id_bigint; - }; - - template <> - struct default_type_traits<unsigned long> - { - static const database_type_id db_type_id = id_bigint; - }; - - template <> - struct default_type_traits<long long> - { - static const database_type_id db_type_id = id_bigint; - }; - - template <> - struct default_type_traits<unsigned long long> - { - static const database_type_id db_type_id = id_bigint; - }; - - // Float types. - // - template <> - struct default_type_traits<float> - { - static const database_type_id db_type_id = id_real; - }; - - template <> - struct default_type_traits<double> - { - static const database_type_id db_type_id = id_double; - }; - - // String types. - // - template <> - struct default_type_traits<std::string> - { - static const database_type_id db_type_id = id_string; - }; - - template <> - struct default_type_traits<char*> - { - static const database_type_id db_type_id = id_string; - }; - - template <> - struct default_type_traits<const char*> - { - static const database_type_id db_type_id = id_string; - }; - - template <std::size_t N> - struct default_type_traits<char[N]> - { - static const database_type_id db_type_id = id_string; - }; - -#ifdef ODB_CXX11 - template <std::size_t N> - struct default_type_traits<std::array<char, N> > - { - static const database_type_id db_type_id = id_string; - }; -#endif - - template <> - struct default_type_traits<char> - { - static const database_type_id db_type_id = id_string; - }; - - // Binary types. - // - template <std::size_t N> - struct default_type_traits<unsigned char[N]> - { - static const database_type_id db_type_id = id_bytea; - }; - - template <> - struct default_type_traits<std::vector<char> > - { - static const database_type_id db_type_id = id_bytea; - }; - - template <> - struct default_type_traits<std::vector<unsigned char> > - { - static const database_type_id db_type_id = id_bytea; - }; - -#ifdef ODB_CXX11 - template <std::size_t N> - struct default_type_traits<std::array<unsigned char, N> > - { - static const database_type_id db_type_id = id_bytea; - }; -#endif - } -} - -#include <odb/post.hxx> - -#endif // ODB_PGSQL_TRAITS_HXX |