91 lines
3.3 KiB
C++
91 lines
3.3 KiB
C++
/* Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
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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, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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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, version 2.0, 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 St, Fifth Floor, Boston, MA 02110-1301 USA */
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/* Update current record in heap-database */
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#include <sys/types.h>
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#include "my_dbug.h"
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#include "my_inttypes.h"
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#include "storage/heap/heapdef.h"
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int heap_update(HP_INFO *info, const uchar *old, const uchar *heap_new) {
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HP_KEYDEF *keydef, *end, *p_lastinx;
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uchar *pos;
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bool auto_key_changed = 0;
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HP_SHARE *share = info->s;
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DBUG_TRACE;
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test_active(info);
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pos = info->current_ptr;
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if (info->opt_flag & READ_CHECK_USED && hp_rectest(info, old))
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return my_errno(); /* Record changed */
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if (--(share->records) < share->blength >> 1) share->blength >>= 1;
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share->changed = 1;
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p_lastinx = share->keydef + info->lastinx;
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for (keydef = share->keydef, end = keydef + share->keys; keydef < end;
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keydef++) {
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if (hp_rec_key_cmp(keydef, old, heap_new)) {
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if ((*keydef->delete_key)(info, keydef, old, pos, keydef == p_lastinx) ||
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(*keydef->write_key)(info, keydef, heap_new, pos))
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goto err;
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if (share->auto_key == (uint)(keydef - share->keydef + 1))
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auto_key_changed = 1;
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}
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}
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memcpy(pos, heap_new, (size_t)share->reclength);
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if (++(share->records) == share->blength) share->blength += share->blength;
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#if !defined(DBUG_OFF) && defined(EXTRA_HEAP_DEBUG)
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DBUG_EXECUTE("check_heap", heap_check_heap(info, 0););
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#endif
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if (auto_key_changed) heap_update_auto_increment(info, heap_new);
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return 0;
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err:
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if (my_errno() == HA_ERR_FOUND_DUPP_KEY) {
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info->errkey = (int)(keydef - share->keydef);
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if (keydef->algorithm == HA_KEY_ALG_BTREE) {
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/* we don't need to delete non-inserted key from rb-tree */
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if ((*keydef->write_key)(info, keydef, old, pos)) {
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if (++(share->records) == share->blength)
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share->blength += share->blength;
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return my_errno();
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}
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keydef--;
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}
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while (keydef >= share->keydef) {
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if (hp_rec_key_cmp(keydef, old, heap_new)) {
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if ((*keydef->delete_key)(info, keydef, heap_new, pos, 0) ||
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(*keydef->write_key)(info, keydef, old, pos))
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break;
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}
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keydef--;
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}
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}
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if (++(share->records) == share->blength) share->blength += share->blength;
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return my_errno();
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} /* heap_update */
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