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by brian
clean slate |
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/* Copyright (C) 2000-2001, 2004 MySQL AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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/* Extra functions we want to do with a database */
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/* - Set flags for quicker databasehandler */
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/* - Set databasehandler to normal */
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/* - Reset recordpointers as after open database */
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#include "heapdef.h" |
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static void heap_extra_keyflag(register HP_INFO *info, |
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enum ha_extra_function function); |
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/* set extra flags for database */
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int heap_extra(register HP_INFO *info, enum ha_extra_function function) |
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{
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DBUG_ENTER("heap_extra"); |
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switch (function) { |
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case HA_EXTRA_RESET_STATE: |
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heap_reset(info); |
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case HA_EXTRA_NO_READCHECK: |
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info->opt_flag&= ~READ_CHECK_USED; /* No readcheck */ |
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break; |
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case HA_EXTRA_READCHECK: |
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info->opt_flag|= READ_CHECK_USED; |
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break; |
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case HA_EXTRA_CHANGE_KEY_TO_UNIQUE: |
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case HA_EXTRA_CHANGE_KEY_TO_DUP: |
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heap_extra_keyflag(info, function); |
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break; |
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default: |
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break; |
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}
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DBUG_RETURN(0); |
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} /* heap_extra */ |
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int heap_reset(HP_INFO *info) |
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{
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info->lastinx= -1; |
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info->current_record= (ulong) ~0L; |
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info->current_hash_ptr=0; |
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info->update=0; |
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info->next_block=0; |
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return 0; |
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}
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/*
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Start/Stop Inserting Duplicates Into a Table, WL#1648.
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*/
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static void heap_extra_keyflag(register HP_INFO *info, |
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enum ha_extra_function function) |
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{
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uint idx; |
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for (idx= 0; idx< info->s->keys; idx++) |
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{
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switch (function) { |
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case HA_EXTRA_CHANGE_KEY_TO_UNIQUE: |
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info->s->keydef[idx].flag|= HA_NOSAME; |
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break; |
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case HA_EXTRA_CHANGE_KEY_TO_DUP: |
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info->s->keydef[idx].flag&= ~(HA_NOSAME); |
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break; |
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default: |
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break; |
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}
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}
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}
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