mirror of
https://github.com/MariaDB/server.git
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0d01dd200f
Added key and file version numbers to MEMORY tables so that we can detect if someone has changed them between HANDLER calls. mysql-test/suite/handler/aria.result: Fixed result after test changes mysql-test/suite/handler/handler.inc: Changed test to use combined key to ensure rows are returned in a pre-determinated order. mysql-test/suite/handler/heap.result: New result mysql-test/suite/handler/heap.test: Added test for HANDLER + HEAP mysql-test/suite/handler/innodb.result: Fixed result after test changes mysql-test/suite/handler/myisam.result: Fixed result after test changes sql/sql_handler.cc: Fixed wrong parameter to ha_index_next_same() storage/heap/ha_heap.cc: Abort key scan if table has changed. Abort table scan if table has been recreated. storage/heap/ha_heap.h: Added support for HANDLER storage/heap/hp_clear.c: Increase version number so that we can notice changes if using HANDLER storage/heap/hp_delete.c: Increase key data version number on key changes. storage/heap/hp_rfirst.c: Remember version of key data Give error if using read-first on hash key. storage/heap/hp_rkey.c: Remember version of key data storage/heap/hp_rlast.c: Remember version of key data Give error if using read-last on hash key. storage/heap/hp_rnext.c: Fixed that we get next key from last search. storage/heap/hp_rprev.c: Fixed that we get previous key from last search. storage/heap/hp_scan.c: Remember version of key and file data storage/heap/hp_update.c: Increase key data version number on key changes. storage/heap/hp_write.c: Increase key data version number on key changes.
82 lines
2.6 KiB
C
82 lines
2.6 KiB
C
/* Copyright (C) 2000-2004, 2006 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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#include "heapdef.h"
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int heap_rkey(HP_INFO *info, uchar *record, int inx, const uchar *key,
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key_part_map keypart_map, enum ha_rkey_function find_flag)
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{
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uchar *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",("info: 0x%lx inx: %d", (long) 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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info->key_version= info->s->key_version;
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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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custom_arg.keyseg= info->s->keydef[inx].seg;
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custom_arg.key_length= info->lastkey_len=
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hp_rb_pack_key(keyinfo, (uchar*) info->lastkey,
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(uchar*) key, keypart_map);
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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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if (!(pos= tree_search_key(&keyinfo->rb_tree, info->lastkey, 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->get_key_length)(keyinfo, pos), sizeof(uchar*));
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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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uchar* heap_find(HP_INFO *info, int inx, const uchar *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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