result.hxx File Reference

#include <stdexcept>
#include "pqxx/util"

Go to the source code of this file.

Namespaces
namespace	pqxx
Classes
class	pqxx::result
	Query or command result set. More...
class	pqxx::result::tuple
	Reference to one row in a result. More...
class	pqxx::result::field
	Reference to a field in a result set. More...
class	pqxx::result::const_iterator
	Iterator for rows (tuples) in a query result set. More...
class	pqxx::result::const_reverse_iterator
class	pqxx::result::const_fielditerator
class	pqxx::result::const_reverse_fielditerator
class	pqxx::field_streambuf< CHAR, TRAITS >
class	pqxx::basic_fieldstream< CHAR, TRAITS >
	Input stream that gets its data from a result field. More...
Typedefs
typedef basic_fieldstream< char >	fieldstream
Functions
template<typename STREAM>
STREAM &	operator<< (STREAM &S, const pqxx::result::field &F)
	Write a result field to any type of stream.
template<typename T>
void	from_string (const result::field &F, T &Obj)
	Convert a field's string contents to another type.
template<>
PGSTD::string	to_string (const result::field &Obj)
	Convert a field to a string.
result::const_iterator	operator+ (result::const_iterator::difference_type o, result::const_iterator i)
result::const_reverse_iterator	operator+ (result::const_reverse_iterator::difference_type n, const result::const_reverse_iterator &i)
result::const_fielditerator	operator+ (result::const_fielditerator::difference_type o, result::const_fielditerator i)

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Typedef Documentation

typedef basic_fieldstream<char> pqxx::fieldstream

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Function Documentation

template<typename T> void from_string (  const result::field &  F, T &  Obj )

Convert a field's string contents to another type.

result::const_fielditerator operator+ (  result::const_fielditerator::difference_type  o, result::const_fielditerator  i )

result::const_reverse_iterator operator+ (  result::const_reverse_iterator::difference_type  n, const result::const_reverse_iterator &  i )

result::const_iterator operator+ (  result::const_iterator::difference_type  o, result::const_iterator  i )

template<typename STREAM> STREAM& operator<< (  STREAM &  S, const pqxx::result::field &  F )

Write a result field to any type of stream. This can be convenient when writing a field to an output stream. More importantly, it lets you write a field to e.g. a stringstream which you can then use to read, format and convert the field in ways that to() does not support. Example: parse a field into a variable of the nonstandard "long long" type. extern result R; long long L; stringstream S; // Write field's string into S S << R[0][0]; // Parse contents of S into L S >> L;

template<> PGSTD::string to_string (  const result::field &  Obj  )

Convert a field to a string.

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