16 #include "pqxx/compiler-public.hxx" 17 #include "pqxx/internal/compiler-internal-pre.hxx" 19 #include "pqxx/except.hxx" 20 #include "pqxx/field.hxx" 21 #include "pqxx/result.hxx" 43 class PQXX_LIBEXPORT
row 57 row(
row const &) =
default;
58 row &operator=(
row const &) =
default;
59 row &operator=(
row &&) =
default;
65 [[nodiscard]] PQXX_PURE
bool operator==(
row const &)
const noexcept;
68 return not operator==(rhs);
81 [[nodiscard]]
reference front()
const noexcept;
82 [[nodiscard]]
reference back()
const noexcept;
93 [[nodiscard]]
reference operator[](
char const[])
const;
99 return (*
this)[s.c_str()];
116 void swap(
row &) noexcept;
128 [[nodiscard]]
size_type column_number(std::string
const &col_name)
const 131 return column_number(col_name.c_str());
135 size_type column_number(
char const[])
const;
138 [[nodiscard]] oid column_type(
size_type)
const;
143 return column_type(column_number(col_name));
147 [[nodiscard]] oid column_table(
size_type col_num)
const;
152 return column_table(column_number(col_name));
168 return table_column(column_number(col_name));
189 [[nodiscard]] PQXX_PURE
bool empty()
const noexcept;
194 template<
typename Tuple>
void to(Tuple &t)
const 196 check_size(std::tuple_size_v<Tuple>);
208 if (size() != expected)
210 " field(s) from a row of " +
to_string(size()) +
"."};
215 template<
typename Tuple>
void convert(Tuple &t)
const 217 constexpr
auto tup_size{std::tuple_size_v<Tuple>};
218 extract_fields(t, std::make_index_sequence<tup_size>{});
236 template<
typename Tuple, std::size_t... indexes>
237 void extract_fields(Tuple &t, std::index_sequence<indexes...>)
const 239 (extract_value<Tuple, indexes>(t), ...);
242 template<
typename Tuple, std::
size_t index>
243 void extract_value(Tuple &t)
const;
310 return col() == i.
col();
314 return col() != i.
col();
318 return col() < i.
col();
322 return col() <= i.
col();
326 return col() > i.
col();
330 return col() >= i.
col();
378 using iterator_type::operator->;
379 using iterator_type::operator*;
388 iterator_type::operator=(r);
393 iterator_type::operator--();
399 iterator_type::operator++();
405 iterator_type::operator-=(i);
410 iterator_type::operator+=(i);
430 return rhs.const_row_iterator::operator-(*this);
441 return iterator_type::operator==(rhs);
446 return !operator==(rhs);
451 return iterator_type::operator>(rhs);
455 return iterator_type::operator>=(rhs);
459 return iterator_type::operator<(rhs);
463 return iterator_type::operator<=(rhs);
495 template<
typename Tuple, std::
size_t index>
496 inline void row::extract_value(Tuple &t)
const 499 field const f{*
this, index};
500 std::get<index>(t) = from_string<field_type>(f);
504 #include "pqxx/internal/compiler-internal-post.hxx" result::size_type rownumber() const noexcept
Row number, assuming this is a real row and not end()/rend().
Definition: row.hxx:119
const_row_iterator(row const &T, row_size_type C) noexcept
Definition: row.hxx:259
const_row_iterator & operator-=(difference_type i)
Definition: row.hxx:297
bool operator<(const_row_iterator const &i) const
Definition: row.hxx:316
row_size_type col() const noexcept
Definition: field.hxx:215
oid column_table(STRING col_name) const
What table did this column come from?
Definition: row.hxx:150
Private namespace for libpqxx's internal use; do not access.
Definition: connection.hxx:60
const_reverse_row_iterator & operator-=(difference_type i)
Definition: row.hxx:408
Reference to one row in a result.
Definition: row.hxx:43
field const * pointer
Definition: row.hxx:253
const_reverse_row_iterator & operator+=(difference_type i)
Definition: row.hxx:403
bool operator>=(const_reverse_row_iterator const &rhs) const
Definition: row.hxx:461
difference_type operator-(const_reverse_row_iterator const &rhs) const
Definition: row.hxx:428
result::size_type num() const
Definition: row.hxx:172
reference operator[](std::string const &s) const
Definition: row.hxx:97
std::random_access_iterator_tag iterator_category
Definition: row.hxx:251
int row_difference_type
Difference between row sizes.
Definition: types.hxx:27
const_row_iterator & operator+=(difference_type i)
Definition: row.hxx:292
field const value_type
Definition: row.hxx:252
oid column_type(STRING col_name) const
Return a column's type.
Definition: row.hxx:141
bool operator==(const_reverse_row_iterator const &rhs) const noexcept
Definition: row.hxx:438
void check_size(size_type expected) const
Throw usage_error if row size is not expected.
Definition: row.hxx:206
std::string to_string(field const &value)
Convert a field to a string.
Definition: result.cxx:477
void convert(Tuple &t) const
Convert entire row to tuple fields, without checking row size.
Definition: row.hxx:215
std::remove_cv_t< std::remove_reference_t< TYPE > > strip_t
Remove any constness, volatile, and reference-ness from a type.
Definition: util.hxx:117
const_row_iterator & operator--()
Definition: row.hxx:286
const_reverse_row_iterator(super const &rhs) noexcept
Definition: row.hxx:366
The home of all libpqxx classes, functions, templates, etc.
Definition: array.hxx:25
const_result_iterator operator+(result::difference_type o, const_result_iterator const &i)
Definition: result_iterator.hxx:329
bool operator<=(const_row_iterator const &i) const
Definition: row.hxx:320
const_row_iterator operator+(difference_type) const
Definition: row.hxx:469
bool operator!=(const_reverse_row_iterator const &rhs) const noexcept
Definition: row.hxx:443
bool operator==(const_row_iterator const &i) const
Definition: row.hxx:308
reference at(std::string const &s) const
Definition: row.hxx:110
void to(Tuple &t) const
Extract entire row's values into a tuple.
Definition: row.hxx:194
const_row_iterator & operator++()
Definition: row.hxx:280
size_type size() const noexcept
Definition: row.hxx:113
int row_size_type
Number of fields in a row of database data.
Definition: types.hxx:24
const_reverse_row_iterator & operator=(const_reverse_row_iterator const &r)
Definition: row.hxx:386
const_row_iterator(field const &F) noexcept
Definition: row.hxx:260
pointer operator->() const
Definition: row.hxx:268
reference operator*() const
Definition: row.hxx:269
size_type table_column(STRING col_name) const
What column number in its table did this result column come from?
Definition: row.hxx:166
bool operator!=(const_row_iterator const &i) const
Definition: row.hxx:312
Reverse iterator for a row. Use as row::const_reverse_iterator.
Definition: row.hxx:351
const_reverse_row_iterator & operator--()
Definition: row.hxx:397
bool operator<=(const_reverse_row_iterator const &rhs) const
Definition: row.hxx:453
Result set containing data returned by a query or command.
Definition: result.hxx:70
row_size_type num() const
Definition: field.hxx:91
row_difference_type difference_type
Definition: row.hxx:47
result_size_type size_type
Definition: result.hxx:73
row_size_type size_type
Definition: row.hxx:46
field_size_type size_type
Definition: field.hxx:35
row_difference_type difference_type
Definition: row.hxx:255
Error in usage of libpqxx library, similar to std::logic_error.
Definition: except.hxx:164
bool operator!=(row const &rhs) const noexcept
Definition: row.hxx:66
result m_result
Result set of which this is one row.
Definition: row.hxx:223
int result_size_type
Number of rows in a result set.
Definition: types.hxx:18
bool operator>(const_reverse_row_iterator const &rhs) const
Definition: row.hxx:457
const_row_iterator operator-(difference_type) const
Definition: row.hxx:482
bool operator<(const_reverse_row_iterator const &rhs) const
Definition: row.hxx:449
const_reverse_row_iterator operator+(difference_type i) const
Definition: row.hxx:419
Reference to a field in a result set.
Definition: field.hxx:32
bool operator>(const_row_iterator const &i) const
Definition: row.hxx:324
Iterator for fields in a row. Use as row::const_iterator.
Definition: row.hxx:248
const_reverse_row_iterator operator-(difference_type i)
Definition: row.hxx:423
const_reverse_row_iterator operator++()
Definition: row.hxx:391
bool operator>=(const_row_iterator const &i) const
Definition: row.hxx:328