mapnik/plugins/input/occi/occi_featureset.hpp

/*****************************************************************************
 * 
 * This file is part of Mapnik (c++ mapping toolkit)
 *
 * Copyright (C) 2007 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
 *
 *****************************************************************************/
//$Id$

#ifndef OCCI_FEATURESET_HPP
#define OCCI_FEATURESET_HPP

// mapnik
#include <mapnik/datasource.hpp>
#include <mapnik/geometry.hpp>
#include <mapnik/unicode.hpp> 

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

// oci
#include "occi_types.hpp"
  
class occi_featureset : public mapnik::Featureset
{
   public:
      occi_featureset(oracle::occi::StatelessConnectionPool* pool,
                      oracle::occi::Connection* conn,
                      std::string const& sqlstring,
                      std::string const& encoding,
                      bool multiple_geometries,
                      bool use_connection_pool,
                      unsigned prefetch_rows,
                      unsigned num_attrs);
      virtual ~occi_featureset();
      mapnik::feature_ptr next();
   private:
      void convert_geometry (SDOGeometry* geom, mapnik::feature_ptr feature, bool multiple_geometries);
      void convert_ordinates (mapnik::feature_ptr feature,
                              const mapnik::eGeomType& geom_type,
                              const std::vector<oracle::occi::Number>& elem_info,
                              const std::vector<oracle::occi::Number>& ordinates,
                              const int dimensions,
                              const bool is_single_geom,
                              const bool is_point_geom,
                              const bool multiple_geometries);
      void fill_geometry_type (mapnik::geometry_type * geom,
                               const int real_offset,
                               const int next_offset,
                               const std::vector<oracle::occi::Number>& ordinates,
                               const int dimensions,
                               const bool is_point_geom);
      occi_connection_ptr conn_;
      oracle::occi::ResultSet* rs_;
      boost::scoped_ptr<mapnik::transcoder> tr_;
      const char* fidcolumn_;
      bool multiple_geometries_;
      unsigned num_attrs_;
      mutable int count_;
};

#endif // OCCI_FEATURESET_HPP