16 #if !defined(PQXX_HEADER_PRE) 17 # error "Include libpqxx headers as <pqxx/header>, not <pqxx/header.hxx>." 24 #include "pqxx/except.hxx" 25 #include "pqxx/types.hxx" 26 #include "pqxx/util.hxx" 27 #include "pqxx/zview.hxx" 29 #include "pqxx/internal/encodings.hxx" 41 class result_connection;
42 class result_creation;
43 class result_pipeline;
45 class result_sql_cursor;
85 m_data{make_data_pointer()},
87 m_encoding{internal::encoding_group::MONOBYTE}
110 [[nodiscard]]
bool operator==(
result const &)
const noexcept;
115 return not operator==(rhs);
126 template<
typename... TYPE>
auto iter()
const;
138 [[nodiscard]]
reference front()
const noexcept;
139 [[nodiscard]]
reference back()
const noexcept;
141 [[nodiscard]] PQXX_PURE
size_type size()
const noexcept;
142 [[nodiscard]] PQXX_PURE
bool empty()
const noexcept;
150 void swap(
result &) noexcept;
157 [[nodiscard]]
row operator[](
size_type i)
const noexcept;
159 #if defined(PQXX_HAVE_MULTIDIMENSIONAL_SUBSCRIPT) 188 [[nodiscard]] PQXX_PURE
row_size_type columns()
const noexcept;
195 [[nodiscard]]
char const *column_name(
row_size_type number)
const &;
203 return column_type(column_number(col_name));
212 return column_table(column_number(col_name));
221 return table_column(column_number(col_name));
226 [[nodiscard]] PQXX_PURE std::string
const &query()
const &noexcept;
232 [[nodiscard]] PQXX_PURE oid inserted_oid()
const;
238 [[nodiscard]] PQXX_PURE
size_type affected_rows()
const;
242 using data_pointer = std::shared_ptr<internal::pq::PGresult const>;
249 make_data_pointer(internal::pq::PGresult
const *res =
nullptr) noexcept
254 friend class pqxx::internal::gate::result_pipeline;
255 PQXX_PURE std::shared_ptr<std::string const> query_ptr() const noexcept
261 std::shared_ptr<std::string const> m_query;
263 internal::encoding_group m_encoding;
265 static std::string
const s_empty_string;
275 friend class pqxx::internal::gate::result_creation;
277 internal::pq::PGresult *rhs, std::shared_ptr<std::string> query,
278 internal::encoding_group enc);
280 PQXX_PRIVATE
void check_status(std::string_view desc =
""sv)
const;
282 friend class pqxx::internal::gate::result_connection;
283 friend class pqxx::internal::gate::result_row;
284 bool operator!() const noexcept {
return m_data.get() ==
nullptr; }
285 operator bool() const noexcept {
return m_data.get() !=
nullptr; }
287 [[noreturn]] PQXX_PRIVATE
void 288 throw_sql_error(std::string
const &Err, std::string
const &Query)
const;
289 PQXX_PRIVATE PQXX_PURE
int errorposition()
const;
290 PQXX_PRIVATE std::string status_error()
const;
292 friend class pqxx::internal::gate::result_sql_cursor;
293 PQXX_PURE
char const *cmd_status() const noexcept;
The home of all libpqxx classes, functions, templates, etc.
Definition: array.hxx:26
Reference to one row in a result.
Definition: row.hxx:46
void clear_result(pq::PGresult const *)
C++ wrapper for libpq's PQclear.
Definition: result.cxx:42
row_size_type table_column(zview col_name) const
What column in its table did this column come from?
Definition: result.hxx:219
const_result_iterator const_iterator
Definition: result.hxx:78
Reference to a field in a result set.
Definition: field.hxx:34
std::size_t field_size_type
Number of bytes in a field of database data.
Definition: types.hxx:40
int row_size_type
Number of fields in a row of database data.
Definition: types.hxx:34
size_type capacity() const noexcept
Definition: result.hxx:143
result() noexcept
Definition: result.hxx:84
result_difference_type difference_type
Definition: result.hxx:76
Definition: connection.hxx:99
bool operator!=(result const &rhs) const noexcept
Compare two results for inequality.
Definition: result.hxx:113
const_reverse_result_iterator const_reverse_iterator
Definition: result.hxx:81
result_size_type size_type
Definition: result.hxx:75
oid column_type(zview col_name) const
Return column's type, as an OID from the system catalogue.
Definition: result.hxx:201
const_iterator iterator
Definition: result.hxx:80
constexpr row_size_type col() const noexcept
Definition: field.hxx:265
Result set containing data returned by a query or command.
Definition: result.hxx:72
Marker-type wrapper: zero-terminated std::string_view.
Definition: zview.hxx:37
Internal items for libpqxx' own use. Do not use these yourself.
Definition: composite.hxx:82
void clear() noexcept
Let go of the result's data.
Definition: result.hxx:178
oid column_table(zview col_name) const
What table did this column come from?
Definition: result.hxx:210
const_reverse_iterator reverse_iterator
Definition: result.hxx:82
int result_difference_type
Difference between result sizes.
Definition: types.hxx:31
int result_size_type
Number of rows in a result set.
Definition: types.hxx:28
const_iterator pointer
Definition: result.hxx:79