diff options
Diffstat (limited to 'storage/maria/ma_rsame.c')
-rw-r--r-- | storage/maria/ma_rsame.c | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/storage/maria/ma_rsame.c b/storage/maria/ma_rsame.c new file mode 100644 index 00000000000..9c9acac013a --- /dev/null +++ b/storage/maria/ma_rsame.c @@ -0,0 +1,69 @@ +/* Copyright (C) 2006 MySQL AB & MySQL Finland AB & TCX DataKonsult AB + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; version 2 of the License. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ + +#include "maria_def.h" + +/* + Find current row with read on position or read on key + + NOTES + If inx >= 0 find record using key + + RETURN + 0 Ok + HA_ERR_KEY_NOT_FOUND Row is deleted + HA_ERR_END_OF_FILE End of file +*/ + + +int maria_rsame(MARIA_HA *info, uchar *record, int inx) +{ + DBUG_ENTER("maria_rsame"); + + if (inx != -1 && ! maria_is_key_active(info->s->state.key_map, inx)) + { + DBUG_RETURN(my_errno=HA_ERR_WRONG_INDEX); + } + if (info->cur_row.lastpos == HA_OFFSET_ERROR || + info->update & HA_STATE_DELETED) + { + DBUG_RETURN(my_errno=HA_ERR_KEY_NOT_FOUND); /* No current record */ + } + info->update&= (HA_STATE_CHANGED | HA_STATE_ROW_CHANGED); + + /* Read row from data file */ + if (fast_ma_readinfo(info)) + DBUG_RETURN(my_errno); + + if (inx >= 0) + { + info->lastinx=inx; + info->lastkey_length= _ma_make_key(info,(uint) inx,info->lastkey,record, + info->cur_row.lastpos); + if (info->s->concurrent_insert) + rw_rdlock(&info->s->key_root_lock[inx]); + VOID(_ma_search(info,info->s->keyinfo+inx,info->lastkey, USE_WHOLE_KEY, + SEARCH_SAME, + info->s->state.key_root[inx])); + if (info->s->concurrent_insert) + rw_unlock(&info->s->key_root_lock[inx]); + } + + if (!(*info->read_record)(info, record, info->cur_row.lastpos)) + DBUG_RETURN(0); + if (my_errno == HA_ERR_RECORD_DELETED) + my_errno=HA_ERR_KEY_NOT_FOUND; + DBUG_RETURN(my_errno); +} /* maria_rsame */ |