/*
 * Copyright (C) 2005 Tommi Maekitalo
 * 
 * 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.
 * 
 * As a special exception, you may use this file as part of a free
 * software library without restriction. Specifically, if other files
 * instantiate templates or use macros or inline functions from this
 * file, or you compile this file and link it with other files to
 * produce an executable, this file does not by itself cause the
 * resulting executable to be covered by the GNU General Public
 * License. This exception does not however invalidate any other
 * reasons why the executable file might be covered by the GNU Library
 * General Public License.
 * 
 * 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 Street, Fifth Floor, Boston, MA  02110-1301  USA
 */

#include <tntdb/mysql/impl/result.h>
#include <tntdb/mysql/impl/resultrow.h>
#include <tntdb/bits/row.h>
#include <tntdb/bits/connection.h>
#include <tntdb/mysql/error.h>
#include <cxxtools/log.h>

log_define("tntdb.mysql.result")

namespace tntdb
{
  namespace mysql
  {
    Result::Result(const tntdb::Connection& c, MYSQL* m, MYSQL_RES* r)
      : conn(c),
        mysql(m),
        result(r)
    {
      log_debug("mysql-result " << r);

      log_debug("mysql_field_count");
      field_count = ::mysql_field_count(m);
    }

    Result::~Result()
    {
      if (result)
      {
        log_debug("mysql_free_result(" << result << ')');
        ::mysql_free_result(result);
      }
    }

    Row Result::getRow(size_type tup_num) const
    {
      log_debug("mysql_data_seek(" << tup_num << ')');
      ::mysql_data_seek(result, tup_num);

      log_debug("mysql_fetch_row");
      MYSQL_ROW row = ::mysql_fetch_row(result);
      if (row == 0)
        throw MysqlError("mysql_fetch_row", mysql);

      const IResult* resc = this;
      IResult* res = const_cast<IResult*>(resc);
      return Row(new ResultRow(tntdb::Result(res), result, row));
    }

    Result::size_type Result::size() const
    {
      log_debug("mysql_num_rows");
      return ::mysql_num_rows(result);
    }

    Result::size_type Result::getFieldCount() const
    {
      return field_count;
    }
  }
}
