/***************************************************************************** * * This file is part of Mapnik (c++ mapping toolkit) * * Copyright (C) 2015 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_INDEX_FEATURESET_HPP #define SHAPE_INDEX_FEATURESET_HPP // stl #include <set> #include <vector> // mapnik #include <mapnik/geom_util.hpp> #include <mapnik/feature.hpp> #include <mapnik/unicode.hpp> #include <mapnik/value_types.hpp> // boost #include <boost/utility.hpp> #include "shape_datasource.hpp" #include "shape_io.hpp" using mapnik::Featureset; using mapnik::box2d; using mapnik::feature_ptr; using mapnik::context_ptr; namespace mapnik { namespace detail { struct node { node() = default; node(int offset_, int start_, int end_) : offset(offset_), start(start_), end(end_) {} int offset; int start; int end; }; }} // ns template <typename filterT> class shape_index_featureset : public Featureset { public: shape_index_featureset(filterT const& filter, std::unique_ptr<shape_io> && shape_ptr, std::set<std::string> const& attribute_names, std::string const& encoding, std::string const& shape_name, int row_limit); virtual ~shape_index_featureset(); feature_ptr next(); private: filterT filter_; context_ptr ctx_; std::unique_ptr<shape_io> shape_ptr_; const std::unique_ptr<mapnik::transcoder> tr_; std::vector<mapnik::detail::node> offsets_; std::vector<mapnik::detail::node>::iterator itr_; std::vector<int> attr_ids_; mapnik::value_integer row_limit_; mutable int count_; mutable box2d<double> feature_bbox_; }; #endif // SHAPE_INDEX_FEATURESET_HPP