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/*****************************************************************************
*
* This file is part of Mapnik (c++ mapping toolkit)
*
* Copyright (C) 2011 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
*
*****************************************************************************/
#ifndef MAPNIK_SQLITE_PREPARED_HPP
#define MAPNIK_SQLITE_PREPARED_HPP
// mapnik
#include <mapnik/debug.hpp>
#include <mapnik/datasource.hpp>
#include <mapnik/params.hpp>
#include <mapnik/box2d.hpp>
#include <mapnik/noncopyable.hpp>
// boost
#include <boost/shared_ptr.hpp>
// stl
#include <string.h>
#include "sqlite_connection.hpp"
// sqlite
extern "C" {
#include <sqlite3.h>
}
class prepared_index_statement : mapnik::noncopyable
{
public:
prepared_index_statement(boost::shared_ptr<sqlite_connection> ds, std::string const& sql)
: ds_(ds),
stmt_(0)
{
const int rc = sqlite3_prepare_v2(*(*ds_),
sql.c_str(),
-1,
&stmt_,
0);
if (rc != SQLITE_OK)
{
std::ostringstream index_error;
index_error << "Sqlite Plugin: auto-index table creation failed: '"
<< sqlite3_errmsg(*(*ds_)) << "' query was: "
<< sql;
throw mapnik::datasource_exception(index_error.str());
}
}
~prepared_index_statement()
{
if (stmt_)
{
int res = sqlite3_finalize(stmt_);
if (res != SQLITE_OK)
{
if (*(*ds_))
{
MAPNIK_LOG_ERROR(sqlite) << "~prepared_index_statement:"
<< sqlite3_errmsg(*(*ds_));
}
else
{
MAPNIK_LOG_ERROR(sqlite) << "~prepared_index_statement:"
<< res;
}
}
}
}
void bind(sqlite_int64 const pkid)
{
if (sqlite3_bind_int64(stmt_, 1, pkid) != SQLITE_OK)
{
throw mapnik::datasource_exception("SQLite Plugin: invalid value for for key field while generating index");
}
}
void bind(mapnik::box2d<double> const& bbox)
{
if ((sqlite3_bind_double(stmt_, 2, bbox.minx()) != SQLITE_OK) ||
(sqlite3_bind_double(stmt_, 3, bbox.maxx()) != SQLITE_OK) ||
(sqlite3_bind_double(stmt_, 4, bbox.miny()) != SQLITE_OK) ||
(sqlite3_bind_double(stmt_, 5, bbox.maxy()) != SQLITE_OK))
{
throw mapnik::datasource_exception("SQLite Plugin: invalid value for for extent while generating index");
}
}
bool step_next ()
{
const int status = sqlite3_step(stmt_);
if (status != SQLITE_DONE)
{
std::ostringstream s;
s << "SQLite Plugin: inserting bbox into rtree index failed";
std::string msg(sqlite3_errmsg(sqlite3_db_handle(stmt_)));
if (msg != "unknown error")
{
s << ": " << msg;
}
throw mapnik::datasource_exception(s.str());
}
sqlite3_clear_bindings(stmt_);
if (sqlite3_reset(stmt_) != SQLITE_OK)
{
throw mapnik::datasource_exception("sqlite3_reset failed");
}
return true;
}
private:
boost::shared_ptr<sqlite_connection> ds_;
sqlite3_stmt * stmt_;
};
#endif // MAPNIK_SQLITE_PREPARED_HPP
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