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/* Copyright (c) 2000, 2004-2006 MySQL AB
Use is subject to license terms
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 Street, Fifth Floor, Boston, MA 02110-1335 USA */
/* Extra functions we want to do with a database */
/* - Set flags for quicker databasehandler */
/* - Set databasehandler to normal */
/* - Reset recordpointers as after open database */
#include "heapdef.h"
static void heap_extra_keyflag(register HP_INFO *info,
enum ha_extra_function function);
/* set extra flags for database */
int heap_extra(register HP_INFO *info, enum ha_extra_function function)
{
DBUG_ENTER("heap_extra");
switch (function) {
case HA_EXTRA_RESET_STATE:
heap_reset(info);
/* fall through */
case HA_EXTRA_NO_READCHECK:
info->opt_flag&= ~READ_CHECK_USED; /* No readcheck */
break;
case HA_EXTRA_READCHECK:
info->opt_flag|= READ_CHECK_USED;
break;
case HA_EXTRA_CHANGE_KEY_TO_UNIQUE:
case HA_EXTRA_CHANGE_KEY_TO_DUP:
heap_extra_keyflag(info, function);
break;
default:
break;
}
DBUG_RETURN(0);
} /* heap_extra */
int heap_reset(HP_INFO *info)
{
info->lastinx= -1;
info->current_record= (ulong) ~0L;
info->current_hash_ptr=0;
info->update=0;
info->next_block=0;
return 0;
}
/*
Start/Stop Inserting Duplicates Into a Table, WL#1648.
*/
static void heap_extra_keyflag(register HP_INFO *info,
enum ha_extra_function function)
{
uint idx;
for (idx= 0; idx< info->s->keys; idx++)
{
switch (function) {
case HA_EXTRA_CHANGE_KEY_TO_UNIQUE:
info->s->keydef[idx].flag|= HA_NOSAME;
break;
case HA_EXTRA_CHANGE_KEY_TO_DUP:
info->s->keydef[idx].flag&= ~(HA_NOSAME);
break;
default:
break;
}
}
}
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