18 #include "myisam_priv.h"
19 #include <drizzled/util/test.h>
23 int mi_update(
register MI_INFO *info,
const unsigned char *oldrec,
unsigned char *newrec)
25 int key_changed,save_errno;
26 register internal::my_off_t pos;
28 unsigned char old_key[MI_MAX_KEY_BUFF],*new_key;
29 bool auto_key_changed=0;
32 ha_checksum old_checksum= 0;
34 if (!(info->update & HA_STATE_AKTIV))
36 return(errno=HA_ERR_KEY_NOT_FOUND);
38 if (share->options & HA_OPTION_READ_ONLY_DATA)
42 if (info->state->key_file_length >= share->base.margin_key_file_length)
44 return(errno=HA_ERR_INDEX_FILE_FULL);
47 if (_mi_readinfo(info,F_WRLCK,1))
50 if (share->calc_checksum)
51 old_checksum=info->checksum=(*share->calc_checksum)(info,oldrec);
52 if ((*share->compare_record)(info,oldrec))
61 for (i=0 ; i < share->state.header.uniques ; i++)
64 if (mi_unique_comp(def, newrec, oldrec,1) &&
65 mi_check_unique(info, def, newrec, mi_unique_hash(def, newrec),
72 if (_mi_mark_file_changed(info))
80 new_key=info->lastkey2;
82 for (i=0 ; i < share->base.keys ; i++)
84 if (mi_is_key_active(share->state.key_map, i))
87 uint32_t new_length=_mi_make_key(info,i,new_key,newrec,pos);
88 uint32_t old_length=_mi_make_key(info,i,old_key,oldrec,pos);
91 info->update&= ~HA_STATE_RNEXT_SAME;
93 if (new_length != old_length ||
94 memcmp(old_key,new_key,new_length))
96 if ((
int) i == info->lastinx)
97 key_changed|=HA_STATE_WRITTEN;
98 changed|=((uint64_t) 1 << i);
99 share->keyinfo[i].version++;
100 if (share->keyinfo[i].ck_delete(info,i,old_key,old_length))
goto err;
101 if (share->keyinfo[i].ck_insert(info,i,new_key,new_length))
goto err;
102 if (share->base.auto_key == i+1)
113 key_changed|= HA_STATE_CHANGED;
115 if (share->calc_checksum)
117 info->checksum=(*share->calc_checksum)(info,newrec);
119 key_changed|= HA_STATE_CHANGED;
128 internal::my_off_t org_delete_link;
130 memcpy(&state, info->state,
sizeof(state));
131 org_split= share->state.split;
132 org_delete_link= share->state.dellink;
133 if ((*share->update_record)(info,pos,newrec))
136 (memcmp(&state, info->state,
sizeof(state)) ||
137 org_split != share->state.split ||
138 org_delete_link != share->state.dellink))
139 key_changed|= HA_STATE_CHANGED;
141 if (auto_key_changed)
142 set_if_bigger(info->s->state.auto_increment,
143 retrieve_auto_increment(info, newrec));
144 if (share->calc_checksum)
145 info->state->checksum+=(info->checksum - old_checksum);
147 info->update= (HA_STATE_CHANGED | HA_STATE_ROW_CHANGED | HA_STATE_AKTIV |
159 _mi_writeinfo(info, WRITEINFO_UPDATE_KEYFILE);
165 key_changed|= HA_STATE_CHANGED;
166 if (errno == HA_ERR_FOUND_DUPP_KEY || errno == HA_ERR_OUT_OF_MEM ||
167 errno == HA_ERR_RECORD_FILE_FULL)
169 info->errkey= (int) i;
173 if (((uint64_t) 1 << i) & changed)
176 uint32_t new_length=_mi_make_key(info,i,new_key,newrec,pos);
177 uint32_t old_length= _mi_make_key(info,i,old_key,oldrec,pos);
178 if ((flag++ && _mi_ck_delete(info,i,new_key,new_length)) ||
179 _mi_ck_write(info,i,old_key,old_length))
187 mi_print_error(info->s, HA_ERR_CRASHED);
188 mi_mark_crashed(info);
190 info->update= (HA_STATE_CHANGED | HA_STATE_AKTIV | HA_STATE_ROW_CHANGED |
194 _mi_writeinfo(info,WRITEINFO_UPDATE_KEYFILE);
195 if (save_errno == HA_ERR_KEY_NOT_FOUND)
197 mi_print_error(info->s, HA_ERR_CRASHED);
198 save_errno=HA_ERR_CRASHED;
200 return(errno=save_errno);
TODO: Rename this file - func.h is stupid.