16 #include "pqxx/compiler-public.hxx" 17 #include "pqxx/internal/compiler-internal-pre.hxx" 23 #include "pqxx/except.hxx" 24 #include "pqxx/types.hxx" 25 #include "pqxx/util.hxx" 26 #include "pqxx/zview.hxx" 28 #include "pqxx/internal/encodings.hxx" 39 class result_connection;
40 class result_creation;
41 class result_pipeline;
43 class result_sql_cursor;
85 m_data(make_data_pointer()),
87 m_encoding(internal::encoding_group::MONOBYTE)
107 [[nodiscard]]
bool operator==(
result const &)
const noexcept;
112 return not operator==(rhs);
123 template<
typename... TYPE>
auto iter()
const;
135 [[nodiscard]]
reference front()
const noexcept;
136 [[nodiscard]]
reference back()
const noexcept;
138 [[nodiscard]] PQXX_PURE
size_type size()
const noexcept;
139 [[nodiscard]] PQXX_PURE
bool empty()
const noexcept;
147 void swap(
result &) noexcept;
150 [[nodiscard]]
row operator[](
size_type i)
const noexcept;
172 [[nodiscard]] PQXX_PURE
row_size_type columns()
const noexcept;
179 [[nodiscard]]
char const *column_name(
row_size_type number)
const;
187 return column_type(column_number(col_name));
196 return column_table(column_number(col_name));
205 return table_column(column_number(col_name));
210 [[nodiscard]] PQXX_PURE std::string
const &query()
const noexcept;
216 [[nodiscard]] PQXX_PURE oid inserted_oid()
const;
223 [[nodiscard]] PQXX_PURE
size_type affected_rows()
const;
227 using data_pointer = std::shared_ptr<internal::pq::PGresult const>;
234 make_data_pointer(internal::pq::PGresult
const *res =
nullptr)
239 friend class pqxx::internal::gate::result_pipeline;
240 PQXX_PURE std::shared_ptr<std::string> query_ptr() const noexcept
246 std::shared_ptr<std::string> m_query;
248 internal::encoding_group m_encoding;
250 static std::string
const s_empty_string;
258 friend class pqxx::internal::gate::result_creation;
260 internal::pq::PGresult *rhs, std::shared_ptr<std::string> query,
261 internal::encoding_group enc);
263 PQXX_PRIVATE
void check_status(std::string_view desc =
""sv)
const;
265 friend class pqxx::internal::gate::result_connection;
266 friend class pqxx::internal::gate::result_row;
267 bool operator!() const noexcept {
return m_data.get() ==
nullptr; }
268 operator bool() const noexcept {
return m_data.get() !=
nullptr; }
270 [[noreturn]] PQXX_PRIVATE
void 271 throw_sql_error(std::string
const &Err, std::string
const &Query)
const;
272 PQXX_PRIVATE PQXX_PURE
int errorposition()
const;
273 PQXX_PRIVATE std::string status_error()
const;
275 friend class pqxx::internal::gate::result_sql_cursor;
276 PQXX_PURE
char const *cmd_status() const noexcept;
280 #include "pqxx/internal/compiler-internal-post.hxx" int result_difference_type
Difference between result sizes.
Definition: types.hxx:21
row_size_type table_column(zview col_name) const
What column in its table did this column come from?
Definition: result.hxx:203
oid column_type(zview col_name) const
Return column's type, as an OID from the system catalogue.
Definition: result.hxx:185
The home of all libpqxx classes, functions, templates, etc.
Definition: array.hxx:25
int result_size_type
Number of rows in a result set.
Definition: types.hxx:18
size_type capacity() const noexcept
Definition: result.hxx:140
result_size_type size_type
Definition: result.hxx:73
result() noexcept
Constructor. Do not call this; libpqxx will call it for you.
Definition: result.hxx:84
void clear_result(pq::PGresult const *)
C++ wrapper for libpq's PQclear.
Definition: result.cxx:37
Reference to a field in a result set.
Definition: field.hxx:33
Iterator for rows in a result. Use as result::const_iterator.
Definition: result_iterator.hxx:35
Marker-type wrapper: zero-terminated std::string_view.
Definition: zview.hxx:37
Reference to one row in a result.
Definition: row.hxx:45
Result set containing data returned by a query or command.
Definition: result.hxx:70
bool operator!=(result const &rhs) const noexcept
Compare two results for inequality.
Definition: result.hxx:110
Definition: connection.hxx:94
void clear() noexcept
Let go of the result's data.
Definition: result.hxx:162
result_difference_type difference_type
Definition: result.hxx:74
Reverse iterator for result. Use as result::const_reverse_iterator.
Definition: result_iterator.hxx:180
row_size_type col() const noexcept
Definition: field.hxx:261
Internal items for libpqxx' own use. Do not use these yourself.
Definition: composite.hxx:73
std::size_t field_size_type
Number of bytes in a field of database data.
Definition: types.hxx:30
oid column_table(zview col_name) const
What table did this column come from?
Definition: result.hxx:194
int row_size_type
Number of fields in a row of database data.
Definition: types.hxx:24