libpqxx
The C++ client library for PostgreSQL
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Public Member Functions | |
notification_receiver (connection &c, std::string_view channel) | |
Register the receiver with a connection. | |
notification_receiver (notification_receiver const &)=delete | |
Register the receiver with a connection. | |
notification_receiver & | operator= (notification_receiver const &)=delete |
Register the receiver with a connection. | |
virtual | ~notification_receiver () |
Deregister the receiver. | |
std::string const & | channel () const & |
The channel that this receiver listens on. | |
virtual void | operator() (std::string const &payload, int backend_pid)=0 |
Overridable: action to invoke when notification arrives. | |
Protected Member Functions | |
connection & | conn () const noexcept |
pqxx::notification_receiver::notification_receiver | ( | connection & | c, |
std::string_view | channel | ||
) |
Register the receiver with a connection.
c | Connnection to operate on. |
channel | Name of the notification to listen for. |
Implementation of the pqxx::notification_receiever class.
pqxx::notification_receiver processes notifications.
Copyright (c) 2000-2024, Jeroen T. Vermeulen.
See COPYING for copyright license. If you did not receive a file called COPYING with this source code, please notify the distributor of this mistake, or contact the author.
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pure virtual |
Overridable: action to invoke when notification arrives.
payload | An optional string that may have been passed to the NOTIFY command. |
backend_pid | Process ID of the database backend process that served our connection when the notification arrived. The actual process ID behind the connection may have changed by the time this method is called. |