8010d5433f
2. Pass resolution to bbox query
3. Use variant<int,double,string> as parameter value e.g in Python:
ds = Raster(file="/path/to/file",lox = 12312.4,.....)
Added extractor facility to work with mapnik::parameter (C++):
mapnik::parameters params;
params["parameter0"] = 123.456;
params["parameter1"] = "123.456"; // initialize with string extract double later
boost::optional<double> val0 = params.get<double>("parameter0");
if (val0)
{
std::cout << *val0;
}
// with default value. NOTE: there is no 'parameter2' in params
boost::optional<double> val2 = params.get<double>("parameter2",654.321);
std::cout << * val2;
//
4. Added Gdal factory method in __init__.py
ds = Gdal(file="/tmp/file.tiff")
94 lines
2.7 KiB
C++
94 lines
2.7 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) 2006 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: connection.hpp 17 2005-03-08 23:58:43Z pavlenko $
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#ifndef CONNECTION_HPP
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#define CONNECTION_HPP
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extern "C"
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{
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#include "libpq-fe.h"
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}
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#include "resultset.hpp"
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class ResultSet;
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class Connection
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{
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private:
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PGconn *conn_;
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public:
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Connection(std::string const& connection_str)
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{
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conn_=PQconnectdb(connection_str.c_str());
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if (PQstatus(conn_) == CONNECTION_BAD)
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{
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std::clog << "connection ["<< connection_str<< "] failed\n"
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<< PQerrorMessage(conn_)<< std::endl;
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}
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}
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bool execute(const std::string& sql) const
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{
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PGresult *result=PQexec(conn_,sql.c_str());
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bool ok=(result && PQresultStatus(result)==PGRES_COMMAND_OK);
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PQclear(result);
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return ok;
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}
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boost::shared_ptr<ResultSet> executeQuery(const std::string& sql,int type=0) const
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{
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PGresult *result=0;
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if (type==1)
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{
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result=PQexecParams(conn_,sql.c_str(),0,0,0,0,0,1);
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return boost::shared_ptr<ResultSet>(new ResultSet(result));
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}
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result=PQexec(conn_,sql.c_str());
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return boost::shared_ptr<ResultSet>(new ResultSet(result));
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}
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std::string client_encoding() const
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{
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return PQparameterStatus(conn_,"client_encoding");
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}
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bool isOK() const
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{
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return (PQstatus(conn_)!=CONNECTION_BAD);
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}
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void close()
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{
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PQfinish(conn_);
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}
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~Connection()
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{
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PQfinish(conn_);
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#ifdef MAPNIK_DEBUG
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std::clog << "close connection " << conn_ << "\n";
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#endif
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}
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};
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#endif //CONNECTION_HPP
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