gnc-backend-prov.hpp

/********************************************************************\
 * qofbackend-prov.hpp -- Manage creation of a QofBackend subclass.  *
 *                                                                  *
 * Copyright 2016 John Ralls <jralls@ceridwen.us>                   *
 *                                                                  *
 * This program 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.              *
 *                                                                  *
 * This program 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 this program; if not, contact:                        *
 *                                                                  *
 * Free Software Foundation           Voice:  +1-617-542-5942       *
 * 51 Franklin Street, Fifth Floor    Fax:    +1-617-542-2652       *
 * Boston, MA  02110-1301,  USA       gnu@gnu.org                   *
 *                                                                  *
\********************************************************************/
 
#ifndef __GNC_BACKEND_PROV_HPP__
#define  __GNC_BACKEND_PROV_HPP__
 
#include <memory>
 
struct QofBackendProvider
{
    QofBackendProvider(const char* name, const char* type) :
        provider_name {name}, access_method {type} {}
    QofBackendProvider(QofBackendProvider&) = delete;
    QofBackendProvider(QofBackendProvider&&) = delete;
    virtual ~QofBackendProvider() {}
 
    virtual QofBackend * create_backend(void) = 0;
 
    /*@ null @*/
    virtual bool type_check(const char*) = 0;
    const char * provider_name;
 
    const char * access_method;
};
 
using QofBackendProvider_ptr = std::unique_ptr<QofBackendProvider>;
 
void qof_backend_register_provider (QofBackendProvider_ptr&&);
 
void qof_backend_unregister_all_providers ();
 
#endif // __GNC_BACKEND_PROV_HPP__