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/*-------------------------------------------------------------------------
*
* FILE
* pqxx/notify-listen.hxx
*
* DESCRIPTION
* Definition of the obsolete pqxx::notify_listener functor interface.
* Predecessor to notification_receiver. Deprecated. Do not use.
* DO NOT INCLUDE THIS FILE DIRECTLY; include pqxx/notify-listen instead.
*
* Copyright (c) 2001-2011, Jeroen T. Vermeulen <jtv@xs4all.nl>
*
* 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.
*
*-------------------------------------------------------------------------
*/
#ifndef PQXX_H_NOTIFY_LISTEN
#define PQXX_H_NOTIFY_LISTEN
#include "pqxx/compiler-public.hxx"
#include "pqxx/compiler-internal-pre.hxx"
#include "pqxx/notification"
namespace pqxx
{
class connection_base;
class notify_listener;
namespace internal
{
/// Internal helper class to support old-style, payloadless notifications.
class notify_listener_forwarder: public notification_receiver
{
public:
notify_listener_forwarder(
connection_base &c,
const PGSTD::string &channel_name,
notify_listener *wrappee) :
notification_receiver(c, channel_name),
m_wrappee(wrappee)
{}
virtual void operator()(const PGSTD::string &, int backend_pid);
private:
notify_listener *m_wrappee;
};
}
/// Obsolete notification receiver.
/** @deprecated Use notification_receiver instead.
*/
class PQXX_LIBEXPORT PQXX_NOVTABLE notify_listener :
public PGSTD::unary_function<int, void>
{
public:
notify_listener(connection_base &c, const PGSTD::string &n);
virtual ~notify_listener() throw ();
const PGSTD::string &name() const { return m_forwarder.channel(); }
virtual void operator()(int be_pid) =0;
protected:
connection_base &Conn() const throw () { return conn(); }
connection_base &conn() const throw () { return m_conn; }
private:
connection_base &m_conn;
internal::notify_listener_forwarder m_forwarder;
};
}
#include "pqxx/compiler-internal-post.hxx"
#endif
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