plugin.h

/*
 * plugin.h
 * This file is part of dbPager Classes Library (DCL)
 *
 * Copyright (c) 2008 Dennis Prochko <wolfsoft@mail.ru>
 *
 * DCL 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 version 3.
 *
 * DCL 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 DCL; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor,
 * Boston, MA  02110-1301  USA
 */

#ifndef _PLUGIN_H_
#define _PLUGIN_H_

#include <string>

#include <dcl/exception.h>

namespace dbp {


class disposable {
public:
        virtual ~disposable() { }
};


class plugin_exception: public exception {
public:
        plugin_exception(const std::string &msg): exception(msg) { }
};


class plugin_int {
public:
        virtual ~plugin_int() { }

        virtual void load(const std::string &file_name)
          throw(plugin_exception) = 0;

        virtual disposable* create_object(const std::string &object_name) = 0;

        virtual void destroy_object(disposable *object) = 0;
};


class plugin: public plugin_int {
public:
        plugin();
        ~plugin();
        virtual void load(const std::string &file_name) throw(plugin_exception);
        virtual disposable* create_object(const std::string &object_name);
        virtual void destroy_object(disposable *object);
private:
        plugin_int *_impl;
};

} // namespace


#endif /*_PLUGIN_H_*/