mapnik/include/datasource_cache.hpp

/*****************************************************************************
 * 
 * This file is part of Mapnik (c++ mapping toolkit)
 *
 * Copyright (C) 2006 Artem Pavlenko
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 *****************************************************************************/

//$Id: datasource_cache.hpp 39 2005-04-10 20:39:53Z pavlenko $

#ifndef DATASOURCE_CACHE_HPP
#define DATASOURCE_CACHE_HPP

#include <map>
#include <boost/shared_ptr.hpp>

#include "utils.hpp"
#include "params.hpp"
#include "plugin.hpp"
#include "datasource.hpp"

namespace mapnik
{
    class MAPNIK_DECL datasource_cache : public singleton <datasource_cache,CreateStatic>
    {
        friend class CreateStatic<datasource_cache>;
    private:
        datasource_cache();
        ~datasource_cache();
        datasource_cache(const datasource_cache&);
        datasource_cache& operator=(const datasource_cache&);
        static std::map<std::string,boost::shared_ptr<PluginInfo> > plugins_;
        static bool registered_;
        static bool insert(const std::string&  name,const lt_dlhandle module);
    public:
        static void register_datasources(const std::string& path);
        static boost::shared_ptr<datasource> create(parameters const& params);
    };
}
#endif   //DATASOURCE_CACHE_HPP