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/*****************************************************************************
*
* This file is part of Mapnik (c++ mapping toolkit)
*
* Copyright (C) 2007 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
*
*****************************************************************************/
//$Id$
#ifndef SQLITE_DATASOURCE_HPP
#define SQLITE_DATASOURCE_HPP
// mapnik
#include <mapnik/datasource.hpp>
#include <mapnik/feature.hpp>
#include <mapnik/feature_layer_desc.hpp>
#include <mapnik/wkb.hpp>
// boost
#include <boost/shared_ptr.hpp>
#include <boost/scoped_ptr.hpp>
// sqlite
#include "sqlite_types.hpp"
class sqlite_datasource : public mapnik::datasource
{
public:
sqlite_datasource(mapnik::parameters const& params, bool bind=true);
virtual ~sqlite_datasource ();
int type() const;
static std::string name();
mapnik::featureset_ptr features(mapnik::query const& q) const;
mapnik::featureset_ptr features_at_point(mapnik::coord2d const& pt) const;
mapnik::box2d<double> envelope() const;
mapnik::layer_descriptor get_descriptor() const;
void bind() const;
private:
mutable mapnik::box2d<double> extent_;
mutable bool extent_initialized_;
int type_;
mutable std::string dataset_name_;
mutable sqlite_connection* dataset_;
std::string table_;
std::string fields_;
std::string metadata_;
mutable std::string geometry_table_;
mutable std::string geometry_field_;
mutable std::string index_table_;
mutable std::string key_field_;
mutable int row_offset_;
mutable int row_limit_;
mutable mapnik::layer_descriptor desc_;
mutable mapnik::wkbFormat format_;
mutable bool multiple_geometries_;
mutable bool use_spatial_index_;
mutable bool has_spatial_index_;
mutable bool using_subquery_;
mutable std::vector<std::string> init_statements_;
// Fill init_statements with any statements
// needed to attach auxillary databases
void parse_attachdb(std::string const& attachdb) const;
};
#endif // SQLITE_DATASOURCE_HPP
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