139 lines
4.2 KiB
C++
139 lines
4.2 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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// mapnik
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#include <mapnik/global.hpp>
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#include <mapnik/datasource.hpp>
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#include <mapnik/box2d.hpp>
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#include <mapnik/geometry.hpp>
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#include <mapnik/feature.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/unicode.hpp>
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#include <mapnik/feature_factory.hpp>
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// ogr
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#include "sqlite_featureset.hpp"
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using mapnik::query;
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using mapnik::box2d;
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using mapnik::CoordTransform;
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using mapnik::Feature;
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using mapnik::feature_ptr;
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using mapnik::geometry_utils;
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using mapnik::transcoder;
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using mapnik::feature_factory;
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sqlite_featureset::sqlite_featureset(boost::shared_ptr<sqlite_resultset> rs,
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std::string const& encoding,
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mapnik::wkbFormat format,
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bool multiple_geometries,
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bool using_subquery)
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: rs_(rs),
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tr_(new transcoder(encoding)),
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format_(format),
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multiple_geometries_(multiple_geometries),
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using_subquery_(using_subquery)
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{
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}
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sqlite_featureset::~sqlite_featureset() {}
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feature_ptr sqlite_featureset::next()
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{
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if (rs_->is_valid () && rs_->step_next ())
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{
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int size;
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const char* data = (const char *) rs_->column_blob (0, size);
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if (! data)
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{
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return feature_ptr();
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}
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int feature_id = rs_->column_integer (1);
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feature_ptr feature(feature_factory::create(feature_id));
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geometry_utils::from_wkb(feature->paths(), data, size, multiple_geometries_, format_);
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for (int i = 2; i < rs_->column_count (); ++i)
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{
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const int type_oid = rs_->column_type (i);
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const char* fld_name = rs_->column_name(i);
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if (! fld_name)
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continue;
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std::string fld_name_str(fld_name);
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// subqueries in sqlite lead to field double quoting which we need to strip
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if (using_subquery_)
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{
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sqlite_utils::dequote(fld_name_str);
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}
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switch (type_oid)
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{
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case SQLITE_INTEGER:
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{
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boost::put(*feature, fld_name_str, rs_->column_integer (i));
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break;
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}
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case SQLITE_FLOAT:
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{
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boost::put(*feature, fld_name_str, rs_->column_double (i));
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break;
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}
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case SQLITE_TEXT:
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{
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int text_size;
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const char * data = rs_->column_text(i, text_size);
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UnicodeString ustr = tr_->transcode(data, text_size);
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boost::put(*feature, fld_name_str, ustr);
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break;
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}
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case SQLITE_NULL:
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{
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boost::put(*feature, fld_name_str, mapnik::value_null());
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break;
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}
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case SQLITE_BLOB:
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break;
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default:
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#ifdef MAPNIK_DEBUG
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std::clog << "Sqlite Plugin: field " << fld_name_str
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<< " unhandled type_oid=" << type_oid << std::endl;
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#endif
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break;
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}
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}
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return feature;
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}
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return feature_ptr();
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}
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