91 lines
3 KiB
C++
91 lines
3 KiB
C++
/*****************************************************************************
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*
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* This file is part of Mapnik (c++ mapping toolkit)
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*
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* Copyright (C) 2015 Artem Pavlenko
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*****************************************************************************/
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#ifndef MAPNIK_SQLITE_DATASOURCE_HPP
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#define MAPNIK_SQLITE_DATASOURCE_HPP
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// mapnik
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#include <mapnik/datasource.hpp>
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#include <mapnik/params.hpp>
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#include <mapnik/query.hpp>
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#include <mapnik/feature.hpp>
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#include <mapnik/box2d.hpp>
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#include <mapnik/coord.hpp>
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#include <mapnik/feature_layer_desc.hpp>
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#include <mapnik/wkb.hpp>
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#include <mapnik/value_types.hpp>
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// boost
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#include <boost/optional.hpp>
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#include <memory>
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// stl
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#include <vector>
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#include <string>
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// sqlite
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#include "sqlite_connection.hpp"
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class sqlite_datasource : public mapnik::datasource
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{
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public:
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sqlite_datasource(mapnik::parameters const& params);
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virtual ~sqlite_datasource ();
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datasource::datasource_t type() const;
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static const char * name();
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mapnik::featureset_ptr features(mapnik::query const& q) const;
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mapnik::featureset_ptr features_at_point(mapnik::coord2d const& pt, double tol = 0) const;
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mapnik::box2d<double> envelope() const;
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boost::optional<mapnik::datasource_geometry_t> get_geometry_type() const;
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mapnik::layer_descriptor get_descriptor() const;
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private:
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// Fill init_statements with any statements
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// needed to attach auxillary databases
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void parse_attachdb(std::string const& attachdb) const;
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std::string populate_tokens(std::string const& sql) const;
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mapnik::box2d<double> extent_;
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bool extent_initialized_;
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mapnik::datasource::datasource_t type_;
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std::string dataset_name_;
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std::shared_ptr<sqlite_connection> dataset_;
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std::string table_;
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std::string fields_;
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std::string metadata_;
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std::string geometry_table_;
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std::string geometry_field_;
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std::string index_table_;
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std::string key_field_;
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int row_offset_;
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mapnik::value_integer row_limit_;
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// TODO - also add to postgis.input
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const std::string intersects_token_;
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mapnik::layer_descriptor desc_;
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mapnik::wkbFormat format_;
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bool use_spatial_index_;
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bool has_spatial_index_;
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bool using_subquery_;
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mutable std::vector<std::string> init_statements_;
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};
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#endif // MAPNIK_SQLITE_DATASOURCE_HPP
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