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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set et sw=2 ts=2: */
/***************************************************************************
* session.h
*
* Tue Dec 15 13:36:49 CET 2009
* Copyright 2009 Bent Bisballe Nyeng
* deva@aasimon.org
****************************************************************************/
/*
* This file is part of Pracro.
*
* Pracro is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Pracro is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Pracro; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#ifndef __PRACRO_SESSION_H__
#define __PRACRO_SESSION_H__
#include <string>
#include <map>
#include <exception>
#include <vector>
#include "mutex.h"
class Environment;
class Journal;
class Session {
public:
Session(Environment *env,
std::string sessionid, std::string patientid, std::string templ);
~Session();
std::string id();
void lock();
void unlock();
void commit();
void nocommit();
void discard();
Journal *journal();
std::string patientid;
std::string templ;
bool active();
void setActive(bool active);
bool isreadonly;
private:
Environment *env;
Journal *_journal;
Mutex mutex;
std::string sessionid;
};
class Sessions {
public:
class SessionAlreadyActive : public std::exception {
public:
SessionAlreadyActive(const std::string sid) : sessionid(sid) {}
~SessionAlreadyActive() throw() {}
const std::string sessionid;
};
Sessions(Environment *env);
/**
* Create a new session, with a unique id. Insert it into the session list,
* and return its pointer.
*/
Session *newSession(std::string patientid, std::string templ)
throw(SessionAlreadyActive);
/**
* Lookup session in session list. Returns the session or NULL if no session
* exists with that sessionid.
*/
Session *session(std::string sessionid);
/**
* Remove session from the session list and return its pointer. It is up to
* the caller to delete it.
*/
Session *takeSession(std::string sessionid);
/**
* Remove session from the session list and delete it.
*/
void deleteSession(std::string sessionid);
/**
* Return number of active sessions.
*/
size_t size();
/**
* Write all active sessions to disc.
*/
void store();
//
// Admin methods
//
std::vector<std::string> activeSessions();
private:
std::map<std::string, Session *> sessions;
Environment *env;
Mutex mutex;
};
class SessionAutolock {
public:
SessionAutolock(Session &session);
~SessionAutolock();
private:
Session &session;
};
#endif/*__PRACRO_SESSION_H__*/
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