pqxx::basic_olostream< CHAR, TRAITS > Class Template Reference

Output stream that writes data back to a large object. More...

#include <largeobject.hxx>

Inheritance diagram for pqxx::basic_olostream< CHAR, TRAITS >:

Public Types
using	char_type = CHAR
using	traits_type = TRAITS
using	int_type = typename traits_type::int_type
using	pos_type = typename traits_type::pos_type
using	off_type = typename traits_type::off_type

Public Member Functions
	basic_olostream (dbtransaction &t, largeobject o, largeobject::size_type buf_size=512)
	Create a basic_olostream.
	basic_olostream (dbtransaction &t, oid o, largeobject::size_type buf_size=512)
	Create a basic_olostream.
	~basic_olostream ()

Detailed Description

template<typename CHAR = char, typename TRAITS = std::char_traits<CHAR>>
class pqxx::basic_olostream< CHAR, TRAITS >

Output stream that writes data back to a large object.

Deprecated:

Access large objects directly using the blob class.

This worked like any other ostream, but to write data to a large object. It supported all formatting and streaming operations of std::ostream.

This functionality was considered too fragile and complex, so it has been replaced with a single, much simpler class.

Member Typedef Documentation

char_type

template<typename CHAR = char, typename TRAITS = std::char_traits<CHAR>>

using pqxx::basic_olostream< CHAR, TRAITS >::char_type = CHAR

int_type

template<typename CHAR = char, typename TRAITS = std::char_traits<CHAR>>

using pqxx::basic_olostream< CHAR, TRAITS >::int_type = typename traits_type::int_type

off_type

template<typename CHAR = char, typename TRAITS = std::char_traits<CHAR>>

using pqxx::basic_olostream< CHAR, TRAITS >::off_type = typename traits_type::off_type

pos_type

template<typename CHAR = char, typename TRAITS = std::char_traits<CHAR>>

using pqxx::basic_olostream< CHAR, TRAITS >::pos_type = typename traits_type::pos_type

traits_type

template<typename CHAR = char, typename TRAITS = std::char_traits<CHAR>>

using pqxx::basic_olostream< CHAR, TRAITS >::traits_type = TRAITS

Constructor & Destructor Documentation

basic_olostream() [1/2]

template<typename CHAR = char, typename TRAITS = std::char_traits<CHAR>>

pqxx::basic_olostream< CHAR, TRAITS >::basic_olostream	(	dbtransaction &	t,
		largeobject	o,
		largeobject::size_type	buf_size = 512
	)

Create a basic_olostream.

Parameters

t	transaction in which this stream is to exist.
o	a large object to access.
buf_size	size of buffer to use internally (optional).

References pqxx::binary.

basic_olostream() [2/2]

template<typename CHAR = char, typename TRAITS = std::char_traits<CHAR>>

pqxx::basic_olostream< CHAR, TRAITS >::basic_olostream	(	dbtransaction &	t,
		oid	o,
		largeobject::size_type	buf_size = 512
	)

Create a basic_olostream.

Parameters

t	transaction in which this stream is to exist.
o	a large object to access.
buf_size	size of buffer to use internally (optional).

References pqxx::binary.

~basic_olostream()

template<typename CHAR = char, typename TRAITS = std::char_traits<CHAR>>

pqxx::basic_olostream< CHAR, TRAITS >::~basic_olostream

(

)

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The documentation for this class was generated from the following file:

• largeobject.hxx