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diff --git a/odb/pgsql/traits.hxx b/odb/pgsql/traits.hxx
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-// 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