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84651126c0
(without few incorrect bugfixes and with 1250 files where only a copyright year was changed)
56 lines
1.7 KiB
C
56 lines
1.7 KiB
C
/* Copyright (c) 2000-2002, 2005-2007 MySQL AB
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Use is subject to license terms
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA */
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#include "heapdef.h"
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/* Read first record with the current key */
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int heap_rlast(HP_INFO *info, uchar *record, int inx)
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{
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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_rlast");
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info->lastinx= inx;
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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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uchar *pos;
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if ((pos = tree_search_edge(&keyinfo->rb_tree, info->parents,
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&info->last_pos, offsetof(TREE_ELEMENT, right))))
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{
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memcpy(&pos, pos + (*keyinfo->get_key_length)(keyinfo, pos),
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sizeof(uchar*));
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info->current_ptr = pos;
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memcpy(record, pos, (size_t)share->reclength);
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info->update = HA_STATE_AKTIV;
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}
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else
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{
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my_errno = HA_ERR_END_OF_FILE;
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DBUG_RETURN(my_errno);
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}
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DBUG_RETURN(0);
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}
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else
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{
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/* We can't scan a non existing key value with hash index */
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my_errno= HA_ERR_WRONG_COMMAND;
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DBUG_RETURN(my_errno);
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}
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}
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