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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
*
*****************************************************************************/
//$Id$
#include <mapnik/global.hpp>
#include <mapnik/datasource.hpp>
#include <mapnik/box2d.hpp>
#include <mapnik/geometry.hpp>
#include <mapnik/feature.hpp>
#include <mapnik/feature_layer_desc.hpp>
#include <mapnik/wkb.hpp>
#include <mapnik/unicode.hpp>
#include <mapnik/feature_factory.hpp>
// ogr
#include "ogr_featureset.hpp"
#include "ogr_converter.hpp"
#include "ogr_feature_ptr.hpp"
using mapnik::query;
using mapnik::box2d;
using mapnik::CoordTransform;
using mapnik::Feature;
using mapnik::feature_ptr;
using mapnik::geometry_utils;
using mapnik::transcoder;
using mapnik::feature_factory;
ogr_featureset::ogr_featureset(OGRDataSource & dataset,
OGRLayer & layer,
OGRGeometry & extent,
const std::string& encoding,
const bool multiple_geometries)
: dataset_(dataset),
layer_(layer),
layerdef_(layer.GetLayerDefn()),
tr_(new transcoder(encoding)),
fidcolumn_(layer_.GetFIDColumn ()),
multiple_geometries_(multiple_geometries),
count_(0)
{
layer_.SetSpatialFilter (&extent);
}
ogr_featureset::ogr_featureset(OGRDataSource & dataset,
OGRLayer & layer,
const mapnik::box2d<double> & extent,
const std::string& encoding,
const bool multiple_geometries)
: dataset_(dataset),
layer_(layer),
layerdef_(layer.GetLayerDefn()),
tr_(new transcoder(encoding)),
fidcolumn_(layer_.GetFIDColumn()),
multiple_geometries_(multiple_geometries),
count_(0)
{
layer_.SetSpatialFilterRect (extent.minx(),
extent.miny(),
extent.maxx(),
extent.maxy());
}
ogr_featureset::~ogr_featureset() {}
feature_ptr ogr_featureset::next()
{
ogr_feature_ptr feat (layer_.GetNextFeature());
if ((*feat) != NULL)
{
// ogr feature ids start at 0, so add one to stay
// consistent with other mapnik datasources that start at 1
int feature_id = ((*feat)->GetFID() + 1);
feature_ptr feature(feature_factory::create(feature_id));
OGRGeometry* geom=(*feat)->GetGeometryRef();
if (geom && !geom->IsEmpty())
{
ogr_converter::convert_geometry (geom, feature, multiple_geometries_);
}
#ifdef MAPNIK_DEBUG
else
{
std::clog << "### Warning: feature with null geometry: " << (*feat)->GetFID() << "\n";
}
#endif
++count_;
int fld_count = layerdef_->GetFieldCount();
for (int i = 0; i < fld_count; i++)
{
OGRFieldDefn* fld = layerdef_->GetFieldDefn (i);
OGRFieldType type_oid = fld->GetType ();
std::string fld_name = fld->GetNameRef ();
switch (type_oid)
{
case OFTInteger:
{
boost::put(*feature,fld_name,(*feat)->GetFieldAsInteger (i));
break;
}
case OFTReal:
{
boost::put(*feature,fld_name,(*feat)->GetFieldAsDouble (i));
break;
}
case OFTString:
case OFTWideString: // deprecated !
{
UnicodeString ustr = tr_->transcode((*feat)->GetFieldAsString (i));
boost::put(*feature,fld_name,ustr);
break;
}
case OFTIntegerList:
case OFTRealList:
case OFTStringList:
case OFTWideStringList: // deprecated !
{
#ifdef MAPNIK_DEBUG
std::clog << "OGR Plugin: unhandled type_oid=" << type_oid << std::endl;
#endif
break;
}
case OFTBinary:
{
#ifdef MAPNIK_DEBUG
std::clog << "OGR Plugin: unhandled type_oid=" << type_oid << std::endl;
#endif
//boost::put(*feature,name,feat->GetFieldAsBinary (i, size));
break;
}
case OFTDate:
case OFTTime:
case OFTDateTime: // unhandled !
{
#ifdef MAPNIK_DEBUG
std::clog << "OGR Plugin: unhandled type_oid=" << type_oid << std::endl;
#endif
break;
}
default: // unknown
{
#ifdef MAPNIK_DEBUG
std::clog << "OGR Plugin: unknown type_oid=" << type_oid << std::endl;
#endif
break;
}
}
}
return feature;
}
#ifdef MAPNIK_DEBUG
std::clog << "OGR Plugin: " << count_ << " features" << std::endl;
#endif
return feature_ptr();
}
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