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/*****************************************************************************
*
* This file is part of Mapnik (c++ mapping toolkit)
*
* Copyright (C) 2015 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
*
*****************************************************************************/
// mapnik
#include <mapnik/value_types.hpp>
#include <mapnik/global.hpp>
#include <mapnik/debug.hpp>
#include <mapnik/box2d.hpp>
#include <mapnik/feature.hpp>
#include <mapnik/feature_layer_desc.hpp>
#include <mapnik/wkb.hpp>
#include <mapnik/unicode.hpp>
#include <mapnik/feature_factory.hpp>
#include <mapnik/geometry_correct.hpp>
// boost
#if defined(MAPNIK_MEMORY_MAPPED_FILE)
#include <mapnik/mapped_memory_cache.hpp>
#pragma GCC diagnostic push
#include <mapnik/warning_ignore.hpp>
#include <boost/interprocess/mapped_region.hpp>
#include <boost/interprocess/streams/bufferstream.hpp>
#pragma GCC diagnostic pop
#endif
// ogr
#include "ogr_index_featureset.hpp"
#include "ogr_converter.hpp"
#include "ogr_index.hpp"
#include <gdal_version.h>
using mapnik::query;
using mapnik::box2d;
using mapnik::feature_ptr;
using mapnik::geometry_utils;
using mapnik::transcoder;
using mapnik::feature_factory;
template <typename filterT>
ogr_index_featureset<filterT>::ogr_index_featureset(mapnik::context_ptr const & ctx,
OGRLayer & layer,
filterT const& filter,
std::string const& index_file,
std::string const& encoding)
: ctx_(ctx),
layer_(layer),
layerdef_(layer.GetLayerDefn()),
filter_(filter),
tr_(new transcoder(encoding)),
fidcolumn_(layer_.GetFIDColumn()),
feature_envelope_()
{
#if defined(MAPNIK_MEMORY_MAPPED_FILE)
boost::optional<mapnik::mapped_region_ptr> memory = mapnik::mapped_memory_cache::instance().find(index_file, true);
if (memory)
{
boost::interprocess::ibufferstream file(static_cast<char*>((*memory)->get_address()),(*memory)->get_size());
ogr_index<filterT,boost::interprocess::ibufferstream >::query(filter,file,ids_);
}
#else
#if defined (WINDOWS)
std::ifstream file(mapnik::utf8_to_utf16(index_file), std::ios::in | std::ios::binary);
#else
std::ifstream file(index_file.c_str(), std::ios::in | std::ios::binary);
#endif
ogr_index<filterT,std::ifstream>::query(filter,file,ids_);
#endif
std::sort(ids_.begin(),ids_.end());
MAPNIK_LOG_DEBUG(ogr) << "ogr_index_featureset: Query size=" << ids_.size();
itr_ = ids_.begin();
// reset reading
layer_.ResetReading();
}
template <typename filterT>
ogr_index_featureset<filterT>::~ogr_index_featureset() {}
template <typename filterT>
feature_ptr ogr_index_featureset<filterT>::next()
{
while (itr_ != ids_.end())
{
int pos = *itr_++;
layer_.SetNextByIndex (pos);
OGRFeature *poFeature = layer_.GetNextFeature();
if (poFeature == nullptr)
{
return feature_ptr();
}
// ogr feature ids start at 0, so add one to stay
// consistent with other mapnik datasources that start at 1
mapnik::value_integer feature_id = (poFeature->GetFID() + 1);
feature_ptr feature(feature_factory::create(ctx_,feature_id));
OGRGeometry* geom=poFeature->GetGeometryRef();
if (geom && !geom->IsEmpty())
{
geom->getEnvelope(&feature_envelope_);
if (!filter_.pass(mapnik::box2d<double>(feature_envelope_.MinX,feature_envelope_.MinY,
feature_envelope_.MaxX,feature_envelope_.MaxY))) continue;
auto geom_corrected = ogr_converter::convert_geometry(geom);
mapnik::geometry::correct(geom_corrected);
feature->set_geometry(std::move(geom_corrected));
}
else
{
MAPNIK_LOG_DEBUG(ogr) << "ogr_index_featureset: Feature with null geometry="
<< poFeature->GetFID();
OGRFeature::DestroyFeature( poFeature );
continue;
}
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:
{
feature->put<mapnik::value_integer>(fld_name,poFeature->GetFieldAsInteger (i));
break;
}
#if GDAL_VERSION_MAJOR >= 2
case OFTInteger64:
{
feature->put<mapnik::value_integer>( fld_name, poFeature->GetFieldAsInteger64(i));
break;
}
#endif
case OFTReal:
{
feature->put(fld_name,poFeature->GetFieldAsDouble (i));
break;
}
case OFTString:
case OFTWideString: // deprecated !
{
feature->put(fld_name,tr_->transcode(poFeature->GetFieldAsString (i)));
break;
}
case OFTIntegerList:
#if GDAL_VERSION_MAJOR >= 2
case OFTInteger64List:
#endif
case OFTRealList:
case OFTStringList:
case OFTWideStringList: // deprecated !
{
MAPNIK_LOG_WARN(ogr) << "ogr_index_featureset: Unhandled type_oid=" << type_oid;
break;
}
case OFTBinary:
{
MAPNIK_LOG_WARN(ogr) << "ogr_index_featureset: Unhandled type_oid=" << type_oid;
//feature->put(name,feat->GetFieldAsBinary (i, size));
break;
}
case OFTDate:
case OFTTime:
case OFTDateTime: // unhandled !
{
MAPNIK_LOG_WARN(ogr) << "ogr_index_featureset: Unhandled type_oid=" << type_oid;
break;
}
}
}
OGRFeature::DestroyFeature( poFeature );
return feature;
}
return feature_ptr();
}
template class ogr_index_featureset<mapnik::filter_in_box>;
template class ogr_index_featureset<mapnik::filter_at_point>;
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