7d2f492ef2
+ wkb-sqlite.patch (kunitoki) + very preliminary spatial index support (idx_<tablename>_<geometry_field>)
122 lines
3.5 KiB
C++
122 lines
3.5 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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#include <mapnik/global.hpp>
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#include <mapnik/datasource.hpp>
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#include <mapnik/envelope.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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// ogr
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#include "sqlite_featureset.hpp"
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using std::clog;
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using std::endl;
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using mapnik::query;
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using mapnik::Envelope;
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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::point_impl;
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using mapnik::line_string_impl;
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using mapnik::polygon_impl;
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using mapnik::geometry2d;
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using mapnik::geometry_utils;
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using mapnik::transcoder;
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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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bool multiple_geometries)
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: rs_(rs),
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tr_(new transcoder(encoding)),
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multiple_geometries_(multiple_geometries),
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count_(0)
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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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feature_ptr feature(new Feature(count_));
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#ifdef MAPNIK_DEBUG
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clog << "feature_oid=" << count_ << endl;
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#endif
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int size;
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const char* data = (const char *) rs_->column_blob (0, size);
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geometry_utils::from_wkb(*feature,data,size,multiple_geometries_,true);
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for (int i = 1; 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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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,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,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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UnicodeString ustr = tr_->transcode (rs_->column_text (i));
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boost::put(*feature,fld_name,ustr);
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break;
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}
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case SQLITE_BLOB:
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case SQLITE_NULL:
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break;
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default:
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#ifdef MAPNIK_DEBUG
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clog << "unhandled type_oid=" << type_oid << endl;
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#endif
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break;
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}
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}
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count_++;
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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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