/***************************************************************************** * * 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 * *****************************************************************************/ //$Id: postgis.hpp 44 2005-04-22 18:53:54Z pavlenko $ #ifndef POSTGIS_DATASOURCE_HPP #define POSTGIS_DATASOURCE_HPP // mapnik #include <mapnik/datasource.hpp> #include <mapnik/box2d.hpp> #include <mapnik/feature_layer_desc.hpp> // boost #include <boost/lexical_cast.hpp> #include <boost/scoped_ptr.hpp> #include "connection_manager.hpp" #include "resultset.hpp" #include "cursorresultset.hpp" using mapnik::transcoder; using mapnik::datasource; using mapnik::box2d; using mapnik::layer_descriptor; using mapnik::featureset_ptr; using mapnik::feature_ptr; using mapnik::query; using mapnik::parameters; using mapnik::coord2d; class postgis_datasource : public datasource { static const std::string GEOMETRY_COLUMNS; static const std::string SPATIAL_REF_SYS; const std::string uri_; const std::string username_; const std::string password_; const std::string table_; mutable std::string schema_; mutable std::string geometry_table_; const std::string geometry_field_; const std::string key_field_; const int cursor_fetch_size_; const int row_limit_; mutable std::string geometryColumn_; mapnik::datasource::datasource_t type_; mutable int srid_; mutable bool extent_initialized_; mutable mapnik::box2d<double> extent_; mutable layer_descriptor desc_; ConnectionCreator<Connection> creator_; const std::string bbox_token_; const std::string scale_denom_token_; bool persist_connection_; bool extent_from_subquery_; // params below are for testing purposes only (will likely be removed at any time) int intersect_min_scale_; int intersect_max_scale_; //bool show_queries_; public: static std::string name(); mapnik::datasource::datasource_t type() const; featureset_ptr features(const query& q) const; featureset_ptr features_at_point(coord2d const& pt) const; mapnik::box2d<double> envelope() const; boost::optional<mapnik::datasource::geometry_t> get_geometry_type() const; layer_descriptor get_descriptor() const; postgis_datasource(const parameters ¶ms, bool bind=true); ~postgis_datasource(); void bind() const; private: std::string sql_bbox(box2d<double> const& env) const; std::string populate_tokens(const std::string& sql, double scale_denom, box2d<double> const& env) const; std::string populate_tokens(const std::string& sql) const; static std::string unquote(const std::string& sql); boost::shared_ptr<IResultSet> get_resultset(boost::shared_ptr<Connection> const &conn, const std::string &sql) const; postgis_datasource(const postgis_datasource&); postgis_datasource& operator=(const postgis_datasource&); }; #endif //POSTGIS_DATASOURCE_HPP