/***************************************************************************** * * This file is part of Mapnik (c++ mapping toolkit) * * Copyright (C) 2011 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 * *****************************************************************************/ #ifndef SHAPE_FEATURESET_HPP #define SHAPE_FEATURESET_HPP //mapnik #include <mapnik/datasource.hpp> #include <mapnik/geom_util.hpp> #include <mapnik/feature.hpp> #include <mapnik/unicode.hpp> #include <mapnik/value_types.hpp> #include "shape_io.hpp" //boost #include <boost/scoped_ptr.hpp> #include <boost/utility.hpp> using mapnik::Featureset; using mapnik::box2d; using mapnik::feature_ptr; using mapnik::transcoder; using mapnik::context_ptr; template <typename filterT> class shape_featureset : public Featureset { public: shape_featureset(filterT const& filter, std::string const& shape_file, std::set<std::string> const& attribute_names, std::string const& encoding, long file_length, int row_limit); virtual ~shape_featureset(); feature_ptr next(); private: filterT filter_; shape_io shape_; box2d<double> query_ext_; mutable box2d<double> feature_bbox_; boost::scoped_ptr<transcoder> tr_; long file_length_; std::vector<int> attr_ids_; mapnik::value_integer row_limit_; mutable int count_; context_ptr ctx_; }; #endif //SHAPE_FEATURESET_HPP