2c81706eb5
+ improvements to the wkb converter + improved sqlite index usage + added more parameters to sqlite datasource
63 lines
2.1 KiB
C++
63 lines
2.1 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) 2007 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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//$Id$
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#ifndef SQLITE_DATASOURCE_HPP
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#define SQLITE_DATASOURCE_HPP
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// mapnik
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#include <mapnik/datasource.hpp>
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#include <mapnik/feature.hpp>
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#include <mapnik/feature_layer_desc.hpp>
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// boost
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#include <boost/shared_ptr.hpp>
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#include <boost/scoped_ptr.hpp>
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// sqlite
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#include "sqlite_types.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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int type() const;
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static std::string 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) const;
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mapnik::Envelope<double> envelope() const;
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mapnik::layer_descriptor get_descriptor() const;
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private:
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static const std::string name_;
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mapnik::Envelope<double> extent_;
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mutable bool extent_initialized_;
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int type_;
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sqlite_connection* dataset_;
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std::string table_, metadata_, geometry_field_, key_field_;
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mapnik::layer_descriptor desc_;
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bool multiple_geometries_;
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bool use_spatial_index_;
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};
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#endif // SQLITE_DATASOURCE_HPP
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