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https://github.com/MariaDB/server.git
synced 2025-12-07 17:42:39 +03:00
eab2893dac
Renamed _hp_func -> hp_func mi_key_cmp moved to /mysys/my_handler.c New tests for HEAP tables
83 lines
2.6 KiB
C
83 lines
2.6 KiB
C
/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult 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; either version 2 of the License, or
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(at your option) any later version.
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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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#include "heapdef.h"
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int heap_rkey(HP_INFO *info, byte *record, int inx, const byte *key,
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uint key_len, enum ha_rkey_function find_flag)
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{
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byte *pos;
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HP_SHARE *share=info->s;
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HP_KEYDEF *keyinfo = share->keydef+inx;
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DBUG_ENTER("heap_rkey");
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DBUG_PRINT("enter",("base: %lx inx: %d",info,inx));
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if ((uint) inx >= share->keys)
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{
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DBUG_RETURN(my_errno=HA_ERR_WRONG_INDEX);
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}
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info->lastinx=inx;
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info->current_record = (ulong) ~0L; /* For heap_rrnd() */
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if (keyinfo->algorithm == HA_KEY_ALG_BTREE)
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{
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heap_rb_param custom_arg;
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hp_rb_pack_key(info, inx, info->recbuf, key, key_len);
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custom_arg.keyseg = info->s->keydef[inx].seg;
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custom_arg.key_length = key_len;
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custom_arg.search_flag = SEARCH_FIND | SEARCH_SAME;
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/* for next rkey() after deletion */
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if (find_flag == HA_READ_AFTER_KEY)
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info->last_find_flag = HA_READ_KEY_OR_NEXT;
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else if (find_flag == HA_READ_BEFORE_KEY)
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info->last_find_flag = HA_READ_KEY_OR_PREV;
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else
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info->last_find_flag = find_flag;
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info->lastkey_len = key_len;
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if (!(pos = tree_search_key(&keyinfo->rb_tree, info->recbuf, info->parents,
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&info->last_pos, find_flag, &custom_arg)))
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{
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info->update = 0;
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DBUG_RETURN(my_errno = HA_ERR_KEY_NOT_FOUND);
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}
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memcpy(&pos, pos + keyinfo->ref_offs, sizeof(byte*));
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info->current_ptr = pos;
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}
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else
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{
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if (!(pos=hp_search(info,share->keydef+inx,key,0)))
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{
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info->update=0;
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DBUG_RETURN(my_errno);
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}
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if (!(keyinfo->flag & HA_NOSAME))
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memcpy(info->lastkey,key,(size_t) keyinfo->length);
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}
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memcpy(record,pos,(size_t) share->reclength);
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info->update=HA_STATE_AKTIV;
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DBUG_RETURN(0);
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}
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/* Quick find of record */
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gptr heap_find(HP_INFO *info, int inx, const byte *key)
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{
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return hp_search(info, info->s->keydef + inx, key, 0);
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}
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