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Diffstat (limited to 'libodb-oracle/odb/oracle/traits.hxx')
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diff --git a/libodb-oracle/odb/oracle/traits.hxx b/libodb-oracle/odb/oracle/traits.hxx new file mode 100644 index 0000000..8a1673c --- /dev/null +++ b/libodb-oracle/odb/oracle/traits.hxx @@ -0,0 +1,1491 @@ +// file : odb/oracle/traits.hxx +// license : ODB NCUEL; see accompanying LICENSE file + +#ifndef ODB_ORACLE_TRAITS_HXX +#define ODB_ORACLE_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/oracle/version.hxx> +#include <odb/oracle/oracle-types.hxx> + +#include <odb/details/buffer.hxx> +#include <odb/details/wrapper-p.hxx> + +#include <odb/oracle/details/export.hxx> +#include <odb/oracle/details/number.hxx> + +namespace odb +{ + namespace oracle + { + enum database_type_id + { + id_int32, + id_int64, + + id_big_int, + + id_float, + id_double, + + // Both large fixed-point and large floating point NUMBER and FLOAT + // values are mapped to this id. + // + id_big_float, + + id_date, + id_timestamp, + id_interval_ym, + id_interval_ds, + + id_string, + id_nstring, + + id_raw, + + id_blob, + id_clob, + id_nclob + }; + + // + // int_traits + // + + // Only mark fundamental unsigned integers as unsigned. In particular, + // treat enums as signed since in most cases and on most platforms the + // underlying integer type will be signed. On Windows with VC9 and up + // and with GCC, the __intN types are simply aliases for the respective + // standard integers so the below code will cover them as well. Also + // note that the ODB compiler performs a similar test, so if you change + // anything below you will probably also need to make a similar change + // there. + // + template <typename T> + struct int_traits {static const bool unsign = false;}; + + template <> + struct int_traits<bool> {static const bool unsign = true;}; + template <> + struct int_traits<unsigned char> {static const bool unsign = true;}; + template <> + struct int_traits<unsigned short> {static const bool unsign = true;}; + template <> + struct int_traits<unsigned int> {static const bool unsign = true;}; + template <> + struct int_traits<unsigned long> {static const bool unsign = true;}; + template <> + struct int_traits<unsigned long long> + { + static const bool unsign = true; + }; + + // + // image_traits + // + + template <typename T, database_type_id> + struct image_traits; + + // int32 + // + template <bool unsign> + struct int32_image_traits; + + template <> + struct int32_image_traits<false> + { + static const bind::buffer_type buffer_type = bind::integer; + typedef int image_type; + }; + + template <> + struct int32_image_traits<true> + { + static const bind::buffer_type buffer_type = bind::uinteger; + typedef unsigned int image_type; + }; + + template <typename T> + struct image_traits<T, id_int32>: int32_image_traits<int_traits<T>::unsign> + { + }; + + // int64 + // + template <bool unsign> + struct int64_image_traits; + + template <> + struct int64_image_traits<false> + { + static const bind::buffer_type buffer_type = bind::integer; + typedef long long image_type; + }; + + template <> + struct int64_image_traits<true> + { + static const bind::buffer_type buffer_type = bind::uinteger; + typedef unsigned long long image_type; + }; + + template <typename T> + struct image_traits<T, id_int64>: int64_image_traits<int_traits<T>::unsign> + { + }; + + // big_int + // + template <typename T> + struct image_traits<T, id_big_int> + { + // Image is a buffer containing native OCI NUMBER representation. + // + typedef char* image_type; + }; + + template <typename T> + struct image_traits<T, id_float> {typedef float image_type;}; + + template <typename T> + struct image_traits<T, id_double> {typedef double image_type;}; + + template <typename T> + struct image_traits<T, id_big_float> + { + // Image is a buffer containing the native OCI NUMBER representation. + // + typedef char* image_type; + }; + + template <typename T> + struct image_traits<T, id_date> + { + // Image is a buffer containing the native OCI DATE representation. This + // buffer has a fixed length of 7 bytes. + // + typedef char* image_type; + }; + + template <typename T> + struct image_traits<T, id_timestamp> + { + typedef datetime image_type; + }; + + template <typename T> + struct image_traits<T, id_interval_ym> + { + typedef interval_ym image_type; + }; + + template <typename T> + struct image_traits<T, id_interval_ds> + { + typedef interval_ds image_type; + }; + + template <typename T> + struct image_traits<T, id_string> {typedef char* image_type;}; + + template <typename T> + struct image_traits<T, id_nstring> {typedef char* image_type;}; + + template <typename T> + struct image_traits<T, id_raw> {typedef char* image_type;}; + + template <typename T> + struct image_traits<T, id_blob> {typedef lob_callback image_type;}; + + template <typename T> + struct image_traits<T, id_clob> {typedef lob_callback image_type;}; + + template <typename T> + struct image_traits<T, id_nclob> {typedef lob_callback 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<wrapped_type, 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)); + } + + // big_int, big_float, string, nstring, raw. + // + static void + set_value (W& v, const char* i, std::size_t n, bool is_null) + { + vtraits::set_value (wtraits::set_ref (v), i, n, is_null); + } + + // string, nstring, raw. + // + static void + set_image (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)); + } + + // big_int, big_float. + // + static void + set_image (char* i, std::size_t& n, bool& is_null, const W& v) + { + vtraits::set_image (i, n, is_null, wtraits::get_ref (v)); + } + + // blob, clob, nclob. + // + static void + set_value (W& v, result_callback_type& cb, void*& context, bool is_null) + { + vtraits::set_value (wtraits::set_ref (v), cb, context, is_null); + } + + static void + set_image (param_callback_type& cb, + const void*& context, + bool& is_null, + const W& v) + { + vtraits::set_image (cb, context, 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<wrapped_type, 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)); + } + + // big_int, big_float, string, nstring, raw. + // + static void + set_value (W& v, const 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); + } + + // string, nstring, raw. + // + static void + set_image (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)); + } + + // big_int, big_float + // + static void + set_image (char* i, std::size_t& n, bool& is_null, const W& v) + { + is_null = wtraits::get_null (v); + + if (!is_null) + vtraits::set_image (i, n, is_null, wtraits::get_ref (v)); + } + + // blob, clob, nclob. + // + static void + set_value (W& v, result_callback_type& cb, void*& context, bool is_null) + { + if (is_null) + wtraits::set_null (v); + else + vtraits::set_value (wtraits::set_ref (v), cb, context, is_null); + } + + static void + set_image (param_callback_type& cb, + const void*& context, + bool& is_null, + const W& v) + { + is_null = wtraits::get_null (v); + + if (!is_null) + vtraits::set_image (cb, context, 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<T, ID>::image_type image_type; + + static void + set_value (T& v, const image_type& i, bool is_null) + { + if (!is_null) + v = T (i); + else + v = T (); + } + + static void + set_image (image_type& i, bool& is_null, T v) + { + is_null = false; + i = image_type (v); + } + }; + + // id_big_int partial specialization. + // + template <typename T, bool unsign> + struct big_int_value_traits; + + template <typename T> + struct big_int_value_traits<T, false> + { + static void + set_value (T& v, const char* b, std::size_t n, bool is_null) + { + if (!is_null) + v = static_cast<T> (details::number_to_int64 (b, n)); + else + v = T (); + } + + static void + set_image (char* b, std::size_t& n, bool& is_null, T v) + { + is_null = false; + details::int64_to_number (b, n, static_cast<long long> (v)); + } + }; + + template <typename T> + struct big_int_value_traits<T, true> + { + static void + set_value (T& v, const char* b, std::size_t n, bool is_null) + { + if (!is_null) + v = static_cast<T> (details::number_to_uint64 (b, n)); + else + v = T (); + } + + static void + set_image (char* b, std::size_t& n, bool& is_null, T v) + { + is_null = false; + details::uint64_to_number (b, n, static_cast<unsigned long long> (v)); + } + }; + + template <typename T> + struct default_value_traits<T, id_big_int>: + big_int_value_traits<T, int_traits<T>::unsign> + { + typedef T value_type; + typedef T query_type; + typedef typename image_traits<T, id_big_int>::image_type image_type; + }; + + // std::string specialization. + // + class LIBODB_ORACLE_EXPORT string_value_traits + { + public: + typedef std::string value_type; + typedef std::string query_type; + typedef char* image_type; + + static void + set_value (std::string& v, + const char* b, + std::size_t n, + bool is_null) + { + if (!is_null) + v.assign (b, n); + else + v.erase (); + } + + static void + set_image (char* b, + std::size_t c, + std::size_t& n, + bool& is_null, + const std::string& v) + { + is_null = false; + n = v.size (); + + if (n > c) + n = c; + + if (n != 0) + std::memcpy (b, v.c_str (), n); + } + }; + + template <> + struct LIBODB_ORACLE_EXPORT default_value_traits<std::string, id_string>: + string_value_traits + { + }; + + template <> + struct LIBODB_ORACLE_EXPORT default_value_traits<std::string, id_nstring>: + string_value_traits + { + }; + + // 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_ORACLE_EXPORT c_string_value_traits + { + public: + typedef const char* value_type; + typedef char* image_type; + + static void + set_image (char* b, + std::size_t c, + std::size_t& n, + bool& is_null, + const char* v) + { + is_null = false; + n = std::strlen (v); + + if (n > c) + n = c; + + if (n != 0) + std::memcpy (b, v, n); + } + }; + + template <> + struct LIBODB_ORACLE_EXPORT default_value_traits<char*, id_string>: + c_string_value_traits {}; + + template <> + struct LIBODB_ORACLE_EXPORT default_value_traits<char*, id_nstring>: + c_string_value_traits {}; + + template <> + struct LIBODB_ORACLE_EXPORT default_value_traits<const char*, id_string>: + c_string_value_traits {}; + + template <> + struct LIBODB_ORACLE_EXPORT default_value_traits<const char*, id_nstring>: + c_string_value_traits {}; + + // char[N] specializations. + // + struct LIBODB_ORACLE_EXPORT c_array_value_traits_base + { + static void + set_value (char* const& v, + const char* b, + std::size_t n, + bool is_null, + std::size_t N); + + static void + set_image (char* b, + std::size_t c, + std::size_t& n, + bool& is_null, + const char* v, + std::size_t N); + }; + + template <std::size_t N> + struct c_array_value_traits + { + typedef char* value_type; + typedef char query_type[N]; + typedef details::buffer image_type; + + static void + set_value (char* const& v, + const char* 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 (char* b, + std::size_t c, + std::size_t& n, + bool& is_null, + const char* v) + { + c_array_value_traits_base::set_image (b, c, n, is_null, v, N); + } + }; + + template <std::size_t N> + struct default_value_traits<char[N], id_string>: + c_array_value_traits<N> {}; + + template <std::size_t N> + struct default_value_traits<char[N], id_nstring>: + c_array_value_traits<N> {}; + + // std::array<char, N> (string) specialization. + // +#ifdef ODB_CXX11 + template <std::size_t N> + struct std_array_value_traits + { + 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 char* 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 (char* b, + std::size_t c, + std::size_t& n, + bool& is_null, + const value_type& v) + { + c_array_value_traits_base::set_image (b, c, n, is_null, v.data (), N); + } + }; + + template <std::size_t N> + struct default_value_traits<std::array<char, N>, id_string>: + std_array_value_traits<N> {}; + + template <std::size_t N> + struct default_value_traits<std::array<char, N>, id_nstring>: + std_array_value_traits<N> {}; +#endif + + // char specialization. + // + struct LIBODB_ORACLE_EXPORT char_value_traits + { + typedef char value_type; + typedef char query_type; + typedef details::buffer image_type; + + static void + set_value (char& v, + const char* 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 (char* b, + std::size_t c, + std::size_t& n, + bool& is_null, + char v) + { + c_array_value_traits_base::set_image (b, c, n, is_null, &v, 1); + } + }; + + template <> + struct LIBODB_ORACLE_EXPORT default_value_traits<char, id_string>: + char_value_traits {}; + + template <> + struct LIBODB_ORACLE_EXPORT default_value_traits<char, id_nstring>: + char_value_traits {}; + + // std::vector<char> (buffer) specialization for RAW. + // + template <> + struct LIBODB_ORACLE_EXPORT default_value_traits<std::vector<char>, id_raw> + { + public: + typedef std::vector<char> value_type; + typedef std::vector<char> query_type; + typedef char* image_type; + + static void + set_value (value_type& v, const char* b, std::size_t n, bool is_null) + { + if (!is_null) + v.assign (b, b + n); + else + v.clear (); + } + + static void + set_image (char* b, + 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; + + // std::vector::data() may not be available in older compilers. + // + if (n != 0) + std::memcpy (b, &v.front (), n); + } + }; + + // std::vector<unsigned char> (buffer) specialization for RAW. + // + template <> + struct LIBODB_ORACLE_EXPORT + default_value_traits<std::vector<unsigned char>, id_raw> + { + typedef std::vector<unsigned char> value_type; + typedef std::vector<unsigned char> query_type; + typedef char* image_type; + + static void + set_value (value_type& v, const char* b, std::size_t n, bool is_null) + { + if (!is_null) + { + const unsigned char* ub (reinterpret_cast<const unsigned char*> (b)); + v.assign (ub, ub + n); + } + else + v.clear (); + } + + static void + set_image (char* b, + 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; + + // std::vector::data() may not be available in older compilers. + // + if (n != 0) + std::memcpy (b, &v.front (), n); + } + }; + + // char[N] (buffer) specialization for RAW. + // + template <std::size_t N> + struct default_value_traits<char[N], id_raw> + { + typedef char* value_type; + typedef char query_type[N]; + typedef char* image_type; + + static void + set_value (char* const& v, const char* b, std::size_t n, bool is_null) + { + if (!is_null) + std::memcpy (v, b, (n < N ? n : N)); + else + std::memset (v, 0, N); + } + + static void + set_image (char* b, + std::size_t c, + std::size_t& n, + bool& is_null, + const char* v) + { + is_null = false; + n = N < c ? N : c; + std::memcpy (b, v, n); + } + }; + + // unsigned char[N] (buffer) specialization for RAW. + // + template <std::size_t N> + struct default_value_traits<unsigned char[N], id_raw> + { + typedef unsigned char* value_type; + typedef unsigned char query_type[N]; + typedef char* image_type; + + static void + set_value (unsigned char* const& v, + const char* b, + std::size_t n, + bool is_null) + { + if (!is_null) + std::memcpy (v, b, (n < N ? n : N)); + else + std::memset (v, 0, N); + } + + static void + set_image (char* b, + std::size_t c, + std::size_t& n, + bool& is_null, + const unsigned char* v) + { + is_null = false; + n = N < c ? N : c; + std::memcpy (b, v, n); + } + }; + +#ifdef ODB_CXX11 + // std::array<char, N> (buffer) specialization for RAW. + // + template <std::size_t N> + struct default_value_traits<std::array<char, N>, id_raw> + { + public: + typedef std::array<char, N> value_type; + typedef value_type query_type; + typedef char* image_type; + + static void + set_value (value_type& v, const char* b, std::size_t n, bool is_null) + { + if (!is_null) + std::memcpy (v.data (), b, (n < N ? n : N)); + else + std::memset (v.data (), 0, N); + } + + static void + set_image (char* b, + std::size_t c, + std::size_t& n, + bool& is_null, + const value_type& v) + { + is_null = false; + n = N < c ? N : c; + std::memcpy (b, v.data (), n); + } + }; + + // std::array<unsigned char, N> (buffer) specialization for RAW. + // + template <std::size_t N> + struct default_value_traits<std::array<unsigned char, N>, id_raw> + { + public: + typedef std::array<unsigned char, N> value_type; + typedef value_type query_type; + typedef char* image_type; + + static void + set_value (value_type& v, const char* b, std::size_t n, bool is_null) + { + if (!is_null) + std::memcpy (v.data (), b, (n < N ? n : N)); + else + std::memset (v.data (), 0, N); + } + + static void + set_image (char* b, + std::size_t c, + std::size_t& n, + bool& is_null, + const value_type& v) + { + is_null = false; + n = N < c ? N : c; + std::memcpy (b, v.data (), n); + } + }; +#endif + + // std::string specialization for LOBs. + // + class LIBODB_ORACLE_EXPORT string_lob_value_traits + { + public: + typedef std::string value_type; + typedef std::string query_type; + typedef lob_callback image_type; + + static void + set_value (std::string& v, + result_callback_type& cb, + void*& context, + bool is_null) + { + if (!is_null) + { + cb = &result_callback; + context = &v; + } + else + v.erase (); + } + + static void + set_image (param_callback_type& cb, + const void*& context, + bool& is_null, + const std::string& v) + { + is_null = false; + cb = ¶m_callback; + context = &v; + } + + static bool + result_callback (void* context, + ub4* position_context, + void* buffer, + ub4 size, + chunk_position); + + static bool + param_callback (const void* context, + ub4* position_context, + const void** buffer, + ub4* size, + chunk_position*, + void* temp_buffer, + ub4 capacity); + }; + + template <> + struct LIBODB_ORACLE_EXPORT default_value_traits<std::string, id_clob>: + string_lob_value_traits + { + }; + + template <> + struct LIBODB_ORACLE_EXPORT default_value_traits<std::string, id_nclob>: + string_lob_value_traits + { + }; + + // std::vector<char> (buffer) specialization for BLOBs. + // + template <> + struct LIBODB_ORACLE_EXPORT default_value_traits<std::vector<char>, + id_blob> + { + public: + typedef std::vector<char> value_type; + typedef std::vector<char> query_type; + typedef lob_callback image_type; + + static void + set_value (value_type& v, + result_callback_type& cb, + void*& context, + bool is_null) + { + if (!is_null) + { + cb = &result_callback; + context = &v; + } + else + v.clear (); + } + + static void + set_image (param_callback_type& cb, + const void*& context, + bool& is_null, + const value_type& v) + { + is_null = false; + cb = ¶m_callback; + context = &v; + } + + static bool + result_callback (void* context, + ub4* position_context, + void* buffer, + ub4 size, + chunk_position); + + static bool + param_callback (const void* context, + ub4* position_context, + const void** buffer, + ub4* size, + chunk_position*, + void* temp_buffer, + ub4 capacity); + }; + + // std::vector<unsigned char> (buffer) specialization for BLOBs. + // + template <> + struct LIBODB_ORACLE_EXPORT + default_value_traits<std::vector<unsigned char>, id_blob> + { + public: + typedef std::vector<unsigned char> value_type; + typedef std::vector<unsigned char> query_type; + typedef lob_callback image_type; + + static void + set_value (value_type& v, + result_callback_type& cb, + void*& context, + bool is_null) + { + if (!is_null) + { + cb = &result_callback; + context = &v; + } + else + v.clear (); + } + + static void + set_image (param_callback_type& cb, + const void*& context, + bool& is_null, + const value_type& v) + { + is_null = false; + cb = ¶m_callback; + context = &v; + } + + static bool + result_callback (void* context, + ub4* position_context, + void* buffer, + ub4 size, + chunk_position); + + static bool + param_callback (const void* context, + ub4* position_context, + const void** buffer, + ub4* size, + chunk_position*, + void* temp_buffer, + ub4 capacity); + }; + + // char[N] (buffer) specialization for BLOBs. + // + template <std::size_t N> + struct default_value_traits<char[N], id_blob> + { + public: + typedef char* value_type; + typedef char query_type[N]; + typedef lob_callback image_type; + + static void + set_value (char* const& v, + result_callback_type& cb, + void*& context, + bool is_null) + { + if (!is_null) + { + cb = &result_callback; + context = v; + } + else + std::memset (v, 0, N); + } + + static void + set_image (param_callback_type& cb, + const void*& context, + bool& is_null, + const char* v) + { + is_null = false; + cb = ¶m_callback; + context = v; + } + + static bool + result_callback (void* context, + ub4* position_context, + void* buffer, + ub4 size, + chunk_position); + + static bool + param_callback (const void* context, + ub4* position_context, + const void** buffer, + ub4* size, + chunk_position*, + void* temp_buffer, + ub4 capacity); + }; + + // unsigned char[N] (buffer) specialization for BLOBs. + // + template <std::size_t N> + struct default_value_traits<unsigned char[N], id_blob> + { + public: + typedef unsigned char* value_type; + typedef unsigned char query_type[N]; + typedef lob_callback image_type; + + static void + set_value (unsigned char* const& v, + result_callback_type& cb, + void*& context, + bool is_null) + { + if (!is_null) + { + cb = &result_callback; + context = v; + } + else + std::memset (v, 0, N); + } + + static void + set_image (param_callback_type& cb, + const void*& context, + bool& is_null, + const unsigned char* v) + { + is_null = false; + cb = ¶m_callback; + context = v; + } + + static bool + result_callback (void* context, + ub4* position_context, + void* buffer, + ub4 size, + chunk_position); + + static bool + param_callback (const void* context, + ub4* position_context, + const void** buffer, + ub4* size, + chunk_position*, + void* temp_buffer, + ub4 capacity); + }; + +#ifdef ODB_CXX11 + // std::array<char, N> (buffer) specialization for BLOBS. + // + template <std::size_t N> + struct default_value_traits<std::array<char, N>, id_blob> + { + public: + typedef std::array<char, N> value_type; + typedef value_type query_type; + typedef lob_callback image_type; + + static void + set_value (value_type& v, + result_callback_type& cb, + void*& context, + bool is_null) + { + if (!is_null) + { + cb = &result_callback; + context = v.data (); + } + else + std::memset (v.data (), 0, N); + } + + static void + set_image (param_callback_type& cb, + const void*& context, + bool& is_null, + const value_type& v) + { + is_null = false; + cb = ¶m_callback; + context = v.data (); + } + + static bool + result_callback (void* context, + ub4* position_context, + void* buffer, + ub4 size, + chunk_position); + + static bool + param_callback (const void* context, + ub4* position_context, + const void** buffer, + ub4* size, + chunk_position*, + void* temp_buffer, + ub4 capacity); + }; + + // std::array<unsigned char, N> (buffer) specialization for BLOBS. + // + template <std::size_t N> + struct default_value_traits<std::array<unsigned char, N>, id_blob> + { + public: + typedef std::array<unsigned char, N> value_type; + typedef value_type query_type; + typedef lob_callback image_type; + + static void + set_value (value_type& v, + result_callback_type& cb, + void*& context, + bool is_null) + { + if (!is_null) + { + cb = &result_callback; + context = v.data (); + } + else + std::memset (v.data (), 0, N); + } + + static void + set_image (param_callback_type& cb, + const void*& context, + bool& is_null, + const value_type& v) + { + is_null = false; + cb = ¶m_callback; + context = v.data (); + } + + static bool + result_callback (void* context, + ub4* position_context, + void* buffer, + ub4 size, + chunk_position); + + static bool + param_callback (const void* context, + ub4* position_context, + const void** buffer, + ub4* size, + chunk_position*, + void* temp_buffer, + ub4 capacity); + }; +#endif + + // + // 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_int32; + }; + + template <> + struct default_type_traits<signed char> + { + static const database_type_id db_type_id = id_int32; + }; + + template <> + struct default_type_traits<unsigned char> + { + static const database_type_id db_type_id = id_int32; + }; + + template <> + struct default_type_traits<short> + { + static const database_type_id db_type_id = id_int32; + }; + + template <> + struct default_type_traits<unsigned short> + { + static const database_type_id db_type_id = id_int32; + }; + + template <> + struct default_type_traits<int> + { + static const database_type_id db_type_id = id_int32; + }; + + template <> + struct default_type_traits<unsigned int> + { + static const database_type_id db_type_id = id_int32; + }; + + template <> + struct default_type_traits<long> + { + static const database_type_id db_type_id = id_big_int; + }; + + template <> + struct default_type_traits<unsigned long> + { + static const database_type_id db_type_id = id_big_int; + }; + + template <> + struct default_type_traits<long long> + { + static const database_type_id db_type_id = id_big_int; + }; + + template <> + struct default_type_traits<unsigned long long> + { + static const database_type_id db_type_id = id_big_int; + }; + + // Float types. + // + template <> + struct default_type_traits<float> + { + static const database_type_id db_type_id = id_float; + }; + + 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. Assume RAW since LOBs cannot be compared in + // Oracle and this is only used in queries. + // + template <std::size_t N> + struct default_type_traits<unsigned char[N]> + { + static const database_type_id db_type_id = id_raw; + }; + + template <> + struct default_type_traits<std::vector<char> > + { + static const database_type_id db_type_id = id_raw; + }; + + template <> + struct default_type_traits<std::vector<unsigned char> > + { + static const database_type_id db_type_id = id_raw; + }; + +#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_raw; + }; +#endif + } +} + +#include <odb/oracle/traits.txx> + +#include <odb/post.hxx> + +#endif // ODB_ORACLE_TRAITS_HXX |