/***************************************************************************** * * 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 POSTGIS_DATASOURCE_HPP #define POSTGIS_DATASOURCE_HPP // mapnik #include <mapnik/datasource.hpp> #include <mapnik/params.hpp> #include <mapnik/query.hpp> #include <mapnik/feature.hpp> #include <mapnik/box2d.hpp> #include <mapnik/coord.hpp> #include <mapnik/feature_layer_desc.hpp> #include <mapnik/unicode.hpp> #include <mapnik/value_types.hpp> // boost #include <boost/optional.hpp> #include <boost/shared_ptr.hpp> #include <boost/scoped_ptr.hpp> // stl #include <vector> #include <string> #include "connection_manager.hpp" #include "resultset.hpp" #include "cursorresultset.hpp" using mapnik::transcoder; using mapnik::datasource; using mapnik::feature_style_context_map; using mapnik::processor_context_ptr; using mapnik::box2d; using mapnik::layer_descriptor; using mapnik::featureset_ptr; using mapnik::feature_ptr; using mapnik::query; using mapnik::parameters; using mapnik::coord2d; typedef boost::shared_ptr< ConnectionManager::PoolType> CnxPool_ptr; class postgis_datasource : public datasource { public: postgis_datasource(const parameters ¶ms); ~postgis_datasource(); mapnik::datasource::datasource_t type() const; static const char * name(); processor_context_ptr get_context(feature_style_context_map &) const; featureset_ptr features_with_context(query const& q, processor_context_ptr ctx) const; featureset_ptr features(query const& q) const; featureset_ptr features_at_point(coord2d const& pt, double tol = 0) const; mapnik::box2d<double> envelope() const; boost::optional<mapnik::datasource::geometry_t> get_geometry_type() const; layer_descriptor get_descriptor() const; private: std::string sql_bbox(box2d<double> const& env) const; std::string populate_tokens(std::string const& sql, double scale_denom, box2d<double> const& env, double pixel_width, double pixel_height) const; std::string populate_tokens(std::string const& sql) const; boost::shared_ptr<IResultSet> get_resultset(boost::shared_ptr<Connection> &conn, std::string const& sql, CnxPool_ptr const& pool, processor_context_ptr ctx= processor_context_ptr()) const; static const std::string GEOMETRY_COLUMNS; static const std::string SPATIAL_REF_SYS; static const double FMAX; const std::string uri_; const std::string username_; const std::string password_; const std::string table_; std::string schema_; std::string geometry_table_; const std::string geometry_field_; std::string key_field_; mapnik::value_integer cursor_fetch_size_; mapnik::value_integer row_limit_; std::string geometryColumn_; mapnik::datasource::datasource_t type_; int srid_; mutable bool extent_initialized_; mutable mapnik::box2d<double> extent_; bool simplify_geometries_; layer_descriptor desc_; ConnectionCreator<Connection> creator_; const std::string bbox_token_; const std::string scale_denom_token_; const std::string pixel_width_token_; const std::string pixel_height_token_; int pool_max_size_; bool persist_connection_; bool extent_from_subquery_; bool estimate_extent_; int max_async_connections_; bool asynchronous_request_; int intersect_min_scale_; int intersect_max_scale_; }; #endif // POSTGIS_DATASOURCE_HPP