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/* 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 "heap_priv.h"
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using namespace drizzled;
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int heap_rkey(HP_INFO *info, unsigned char *record, int inx, const unsigned char *key,
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key_part_map keypart_map, enum ha_rkey_function find_flag)
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HP_SHARE *share= info->s;
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HP_KEYDEF *keyinfo= share->keydef + inx;
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if ((uint) inx >= share->keys)
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return(errno= HA_ERR_WRONG_INDEX);
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info->current_record= UINT32_MAX; /* For heap_rrnd() */
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if (keyinfo->algorithm == HA_KEY_ALG_BTREE)
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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, (unsigned char*) info->lastkey,
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(unsigned char*) 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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info->last_find_flag= find_flag;
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if (!(pos= (unsigned char *)tree_search_key(&keyinfo->rb_tree,
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info->lastkey, info->parents,
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find_flag, &custom_arg)))
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return(errno= HA_ERR_KEY_NOT_FOUND);
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memcpy(&pos, pos + (*keyinfo->get_key_length)(keyinfo, pos), sizeof(unsigned char*));
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info->current_ptr= pos;
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if (!(pos= hp_search(info, share->keydef + inx, key, 0)))
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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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hp_extract_record(share, record, pos);
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info->update= HA_STATE_AKTIV;
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/* Quick find of record */
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unsigned char* heap_find(HP_INFO *info, int inx, const unsigned char *key)
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return hp_search(info, info->s->keydef + inx, key, 0);