pqxx::transaction_focus Class Reference

Base class for things that monopolise a transaction's attention. More...

#include <transaction_focus.hxx>

Inheritance diagram for pqxx::transaction_focus:

Public Member Functions
	transaction_focus (transaction_base &t, std::string_view cname, std::string_view oname)
	transaction_focus (transaction_base &t, std::string_view cname, std::string &&oname)
	transaction_focus (transaction_base &t, std::string_view cname)
	transaction_focus ()=delete
	transaction_focus (transaction_focus const &)=delete
transaction_focus &	operator= (transaction_focus const &)=delete
constexpr std::string_view	classname () const noexcept
	Class name, for human consumption.
std::string_view	name () const &noexcept
	Name for this object, if the caller passed one; empty string otherwise.
std::string	description () const
	transaction_focus (transaction_focus &&)=delete
	Can't move a transaction_focus.
transaction_focus &	operator= (transaction_focus &&)=delete
	Can't move a transaction_focus.

Protected Member Functions
void	register_me ()
void	unregister_me () noexcept
void	reg_pending_error (std::string const &) noexcept
bool	registered () const noexcept

Protected Attributes
transaction_base &	m_trans

Detailed Description

Base class for things that monopolise a transaction's attention.

You probably won't need to use this class. But it can be useful to know that a given libpqxx class is derived from it.

Pipelines, SQL statements, and data streams are examples of classes derived from transaction_focus. For any given transaction, only one object of such a class can be active at any given time.

Constructor & Destructor Documentation

transaction_focus() [1/6]

pqxx::transaction_focus::transaction_focus	(	transaction_base &	t,
		std::string_view	cname,
		std::string_view	oname
	)

transaction_focus() [2/6]

pqxx::transaction_focus::transaction_focus	(	transaction_base &	t,
		std::string_view	cname,
		std::string &&	oname
	)

transaction_focus() [3/6]

pqxx::transaction_focus::transaction_focus	(	transaction_base &	t,
		std::string_view	cname
	)

transaction_focus() [4/6]

pqxx::transaction_focus::transaction_focus ( )

delete

transaction_focus() [5/6]

pqxx::transaction_focus::transaction_focus ( transaction_focus const &  )

delete

transaction_focus() [6/6]

pqxx::transaction_focus::transaction_focus ( transaction_focus &&  )

delete

Can't move a transaction_focus.

Moving the transaction_focus would break the transaction's reference back to the object.

Member Function Documentation

classname()

constexpr std::string_view pqxx::transaction_focus::classname ( ) const

constexprnoexcept

Class name, for human consumption.

description()

std::string pqxx::transaction_focus::description

(

)

const

References pqxx::internal::describe_object().

name()

std::string_view pqxx::transaction_focus::name ( ) const &

noexcept

Name for this object, if the caller passed one; empty string otherwise.

operator=() [1/2]

transaction_focus & pqxx::transaction_focus::operator= ( transaction_focus &&  )

delete

Can't move a transaction_focus.

Moving the transaction_focus would break the transaction's reference back to the object.

operator=() [2/2]

transaction_focus & pqxx::transaction_focus::operator= ( transaction_focus const &  )

delete

reg_pending_error()

void pqxx::transaction_focus::reg_pending_error ( std::string const &  err )

protectednoexcept

Referenced by pqxx::stream_to::~stream_to().

register_me()

void pqxx::transaction_focus::register_me ( )

protected

Referenced by pqxx::stream_from::stream_from(), and pqxx::stream_from::stream_from().

registered()

bool pqxx::transaction_focus::registered ( ) const

protectednoexcept

unregister_me()

void pqxx::transaction_focus::unregister_me ( )

protectednoexcept

Member Data Documentation

m_trans

transaction_base& pqxx::transaction_focus::m_trans

protected

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

• transaction_focus.hxx
• transaction_base.cxx