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c33289a3a1
in FULLTEXT indexes. Docs/manual.texi: Removed some @ifset nushere tags which crashed the manual when using emacs client/mysql-test.c: ***MISSING WEAVE*** heap/hp_test2.c: Removed compiler warnings isam/pack_isam.c: Removed compiler warnings isam/update.c: Removed compiler warnings myisam/ft_parser.c: cleanup myisam/ft_update.c: Fixed crash when inserting a blob which was NULL myisam/mi_check.c: -e continues checking of other keys on error myisam/mi_rkey.c: cleanup myisam/myisamchk.c: cleanup myisam/myisamlog.c: Added use of rnd to make things more predictable myisammrg/myrg_rkey.c: Removed compiler warnings mysys/mf_pack.c: cleanup mysys/my_fstream.c: cleanup sql/ha_berkeley.cc: cleanup sql/handler.cc: cleanup sql/item_func.cc: cleanup sql/item_func.h: cleanup sql/net_serv.cc: cleanup sql/slave.cc: cleanup sql/sql_class.cc: cleanup sql/sql_show.cc: cleanup
117 lines
3.7 KiB
C
117 lines
3.7 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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/* Uppdaterare nuvarande record i en pisam-databas */
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#include "isamdef.h"
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#ifdef __WIN__
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#include <errno.h>
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#endif
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/* Updaterar senaste l{sta record i databasen */
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int nisam_update(register N_INFO *info, const byte *oldrec, const byte *newrec)
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{
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int flag,key_changed,save_errno;
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reg3 ulong pos;
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uint i,length;
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uchar old_key[N_MAX_KEY_BUFF],*new_key;
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DBUG_ENTER("nisam_update");
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LINT_INIT(save_errno);
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if (!(info->update & HA_STATE_AKTIV))
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{
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my_errno=HA_ERR_KEY_NOT_FOUND;
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DBUG_RETURN(-1);
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}
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if (info->s->base.options & HA_OPTION_READ_ONLY_DATA)
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{
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my_errno=EACCES;
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DBUG_RETURN(-1);
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}
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pos=info->lastpos;
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#ifndef NO_LOCKING
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if (_nisam_readinfo(info,F_WRLCK,1)) DBUG_RETURN(-1);
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#endif
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if ((*info->s->compare_record)(info,oldrec))
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{
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save_errno=my_errno;
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goto err_end; /* Record has changed */
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}
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if (info->s->state.key_file_length >=
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info->s->base.max_key_file_length -
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info->s->blocksize* INDEX_BLOCK_MARGIN *info->s->state.keys)
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{
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save_errno=HA_ERR_INDEX_FILE_FULL;
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goto err_end;
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}
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/* Flyttar de element i isamfilen som m}ste flyttas */
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new_key=info->lastkey+info->s->base.max_key_length;
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key_changed=HA_STATE_KEY_CHANGED; /* We changed current database */
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/* Remove key that didn't change */
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for (i=0 ; i < info->s->state.keys ; i++)
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{
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length=_nisam_make_key(info,i,new_key,newrec,pos);
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if (length != _nisam_make_key(info,i,old_key,oldrec,pos) ||
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memcmp((byte*) old_key,(byte*) new_key,length))
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{
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if ((int) i == info->lastinx)
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key_changed|=HA_STATE_WRITTEN; /* Mark that keyfile changed */
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if (_nisam_ck_delete(info,i,old_key)) goto err;
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if (_nisam_ck_write(info,i,new_key)) goto err;
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}
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}
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if ((*info->s->update_record)(info,pos,newrec))
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goto err;
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info->update= (HA_STATE_CHANGED | HA_STATE_ROW_CHANGED | HA_STATE_AKTIV |
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key_changed);
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nisam_log_record(LOG_UPDATE,info,newrec,info->lastpos,0);
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VOID(_nisam_writeinfo(info,test(key_changed)));
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allow_break(); /* Allow SIGHUP & SIGINT */
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DBUG_RETURN(0);
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err:
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DBUG_PRINT("error",("key: %d errno: %d",i,my_errno));
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save_errno=my_errno;
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if (my_errno == HA_ERR_FOUND_DUPP_KEY || my_errno == HA_ERR_RECORD_FILE_FULL)
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{
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info->errkey= (int) i;
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flag=0;
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do
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{
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length=_nisam_make_key(info,i,new_key,newrec,pos);
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if (length != _nisam_make_key(info,i,old_key,oldrec,pos) ||
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memcmp((byte*) old_key,(byte*) new_key,length))
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{
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if ((flag++ && _nisam_ck_delete(info,i,new_key)) ||
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_nisam_ck_write(info,i,old_key))
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break;
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}
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} while (i-- != 0);
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}
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info->update= (HA_STATE_CHANGED | HA_STATE_ROW_CHANGED | HA_STATE_AKTIV |
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key_changed);
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err_end:
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nisam_log_record(LOG_UPDATE,info,newrec,info->lastpos,save_errno);
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VOID(_nisam_writeinfo(info,1));
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allow_break(); /* Allow SIGHUP & SIGINT */
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my_errno=(save_errno == HA_ERR_KEY_NOT_FOUND) ? HA_ERR_CRASHED : save_errno;
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DBUG_RETURN(-1);
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} /* nisam_update */
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