108 lines
2.7 KiB
C++
108 lines
2.7 KiB
C++
/* This file is part of Mapnik (c++ mapping toolkit)
|
|
* Copyright (C) 2005 Artem Pavlenko
|
|
*
|
|
* Mapnik is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or any later version.
|
|
*
|
|
* This program 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 General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
//$Id: postgisfs.cc 34 2005-04-04 13:27:23Z pavlenko $
|
|
|
|
|
|
#include "postgis.hpp"
|
|
#include "global.hpp"
|
|
#include "wkb.hpp"
|
|
|
|
using boost::lexical_cast;
|
|
using boost::bad_lexical_cast;
|
|
using std::string;
|
|
|
|
postgis_featureset::postgis_featureset(const ref_ptr<ResultSet>& rs,
|
|
unsigned num_attrs=0)
|
|
: rs_(rs),
|
|
num_attrs_(num_attrs),
|
|
totalGeomSize_(0),
|
|
count_(0) {}
|
|
|
|
feature_ptr postgis_featureset::next()
|
|
{
|
|
if (rs_->next())
|
|
{
|
|
const char* buf = rs_->getValue(0);
|
|
int id = int4net(buf);
|
|
feature_ptr feature(new Feature(id));
|
|
int size=rs_->getFieldLength(1);
|
|
const char *data=rs_->getValue(1);
|
|
geometry_ptr geom=geometry_utils::from_wkb(data,size,-1);
|
|
totalGeomSize_+=size;
|
|
|
|
if (geom)
|
|
{
|
|
feature->set_geometry(geom);
|
|
feature->reserve_props(num_attrs_);
|
|
unsigned start=2;
|
|
for (unsigned pos=0;pos<num_attrs_;++pos)
|
|
{
|
|
const char* buf=rs_->getValue(start + pos);
|
|
//int field_size = rs_->getFieldLength(start + pos);
|
|
int oid = rs_->getTypeOID(start + pos);
|
|
|
|
if (oid==23) //int4
|
|
{
|
|
int val = int4net(buf);
|
|
feature->add_property(val);
|
|
}
|
|
else if (oid==21) //int2
|
|
{
|
|
int val = int2net(buf);
|
|
feature->add_property(val);
|
|
}
|
|
else if (oid == 700) // float4
|
|
{
|
|
float val;
|
|
float4net(val,buf);
|
|
feature->add_property((double)val);
|
|
}
|
|
else if (oid == 701) // float8
|
|
{
|
|
double val;
|
|
float8net(val,buf);
|
|
feature->add_property(val);
|
|
}
|
|
else if (oid==1042 || oid==1043) //bpchar or varchar
|
|
{
|
|
feature->add_property(string(buf));
|
|
}
|
|
else
|
|
{
|
|
feature->add_property(string("null"));
|
|
}
|
|
}
|
|
++count_;
|
|
}
|
|
return feature;
|
|
}
|
|
else
|
|
{
|
|
rs_->close();
|
|
std::cout << "totalGeomSize="<<totalGeomSize_<<" bytes"<<std::endl;
|
|
std::cout << "count="<<count_<<std::endl;
|
|
return feature_ptr(0);
|
|
}
|
|
}
|
|
|
|
|
|
postgis_featureset::~postgis_featureset()
|
|
{
|
|
rs_->close();
|
|
}
|