~drizzle-trunk/drizzle/development

/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-

 *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:

 *

 *  Copyright (C) 2008 Sun Microsystems, Inc.

 *

 *  This program 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; version 2 of the License.

 *

 *  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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

 */

#include "drizzled/sql_sort.h"

#ifndef DRIZZLED_FILESORT_INFO_H

#define DRIZZLED_FILESORT_INFO_H

namespace drizzled

{

/* Information on state of filesort */

class filesort_info

{

public:

  internal::st_io_cache *io_cache;           /* If sorted through filesort */

  unsigned char     **sort_keys;        /* Buffer for sorting keys */

  unsigned char     *buffpek;           /* Buffer for buffpek structures */

  uint32_t      buffpek_len;        /* Max number of buffpeks in the buffer */

  unsigned char     *addon_buf;         /* Pointer to a buffer if sorted with fields */

  size_t    addon_length;       /* Length of the buffer */

  sort_addon_field *addon_field;     /* Pointer to the fields info */

  void    (*unpack)(sort_addon_field *, unsigned char *); /* To unpack back */

  unsigned char     *record_pointers;    /* If sorted in memory */

  ha_rows   found_records;      /* How many records in sort */

  filesort_info() :

    io_cache(0),

    sort_keys(0),

    buffpek(0),

    buffpek_len(0),

    addon_buf(0),

    addon_length(0),

    addon_field(0),

    unpack(0),

    record_pointers(0),

    found_records()

  { }

  filesort_info(const filesort_info& arg) :

    io_cache(arg.io_cache),

    sort_keys(arg.sort_keys),

    buffpek(arg.buffpek),

    buffpek_len(arg.buffpek_len),

    addon_buf(arg.addon_buf),

    addon_length(arg.addon_length),

    addon_field(arg.addon_field),

    unpack(arg.unpack),

    record_pointers(arg.record_pointers),

    found_records(arg.found_records)

  {

  }

  ~filesort_info()

  {

  }

};

} /* namespace drizzled */

#endif /* DRIZZLED_FILESORT_INFO_H */