Stream that reads and writes a large object. More...

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

Collaboration diagram for pqxx::basic_lostream< 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_lostream (dbtransaction &t, largeobject o, largeobject::size_type buf_size=512)
	Create a basic_lostream.

	basic_lostream (dbtransaction &t, oid o, largeobject::size_type buf_size=512)
	Create a basic_lostream.

Detailed Description

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

Stream that reads and writes a large object.

Deprecated:: Access large objects directly using the blob class.

This worked like a std::iostream, but to read data from, or write data to, a large object. It supported all formatting and streaming operations of std::iostream.

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

Constructor & Destructor Documentation

◆ basic_lostream() [1/2]

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

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

inline

Create a basic_lostream.

Parameters

t	Transaction in which this stream is to exist.
o	Large object to access.
buf_size	Size of buffer to use internally (optional).

◆ basic_lostream() [2/2]