int _mi_ft_update(MI_INFO *info, uint keynr, byte *keybuf,
const byte *oldrec, const byte *newrec, my_off_t pos)
{
int error= -1;
FT_WORD *oldlist,*newlist, *old_word, *new_word;
CHARSET_INFO *cs=info->s->keyinfo[keynr].seg->charset;
uint key_length;
int cmp, cmp2;
DBUG_ENTER("_mi_ft_update");
if (!(old_word=oldlist=_mi_ft_parserecord(info, keynr, oldrec)))
goto err0;
if (!(new_word=newlist=_mi_ft_parserecord(info, keynr, newrec)))
goto err1;
error=0;
while(old_word->pos && new_word->pos)
{
cmp= mi_compare_text(cs, (uchar*) old_word->pos,old_word->len,
(uchar*) new_word->pos,new_word->len,0,0);
cmp2= cmp ? 0 : (fabs(old_word->weight - new_word->weight) > 1.e-5);
if (cmp < 0 || cmp2)
{
key_length=_ft_make_key(info,keynr,keybuf,old_word,pos);
if ((error=_mi_ck_delete(info,keynr,(uchar*) keybuf,key_length)))
goto err2;
}
if (cmp > 0 || cmp2)
{
key_length=_ft_make_key(info,keynr,keybuf,new_word,pos);
if ((error=_mi_ck_write(info,keynr,(uchar*) keybuf,key_length)))
goto err2;
}
if (cmp<=0) old_word++;
if (cmp>=0) new_word++;
}
if (old_word->pos)
error=_mi_ft_erase(info,keynr,keybuf,old_word,pos);
else if (new_word->pos)
error=_mi_ft_store(info,keynr,keybuf,new_word,pos);
err2:
my_free((char*) newlist,MYF(0));
err1:
my_free((char*) oldlist,MYF(0));
err0:
DBUG_RETURN(error);
}
int _mi_ft_del(MI_INFO *info, uint keynr, uchar *keybuf, const uchar *record,
my_off_t pos)
{
int error= -1;
FT_WORD *wlist;
DBUG_ENTER("_mi_ft_del");
DBUG_PRINT("enter",("keynr: %d",keynr));
if ((wlist=_mi_ft_parserecord(info, keynr, record, &info->ft_memroot)))
error=_mi_ft_erase(info,keynr,keybuf,wlist,pos);
free_root(&info->ft_memroot, MYF(MY_MARK_BLOCKS_FREE));
DBUG_PRINT("exit",("Return: %d",error));
DBUG_RETURN(error);
}
int _mi_ft_del(MI_INFO *info, uint keynr, byte *keybuf, const byte *record,
my_off_t pos)
{
int error= -1;
FT_WORD *wlist;
DBUG_ENTER("_mi_ft_del");
DBUG_PRINT("enter",("keynr: %d",keynr));
if ((wlist=_mi_ft_parserecord(info, keynr, record)))
{
error=_mi_ft_erase(info,keynr,keybuf,wlist,pos);
my_free((char*) wlist,MYF(0));
}
DBUG_PRINT("exit",("Return: %d",error));
DBUG_RETURN(error);
}
int _mi_ft_update(MI_INFO *info, uint keynr, uchar *keybuf,
const uchar *oldrec, const uchar *newrec, my_off_t pos)
{
int error= -1;
FT_WORD *oldlist,*newlist, *old_word, *new_word;
const CHARSET_INFO *cs= info->s->keyinfo[keynr].seg->charset;
uint key_length;
int cmp, cmp2;
DBUG_ENTER("_mi_ft_update");
if (!(old_word=oldlist=_mi_ft_parserecord(info, keynr, oldrec,
&info->ft_memroot)) ||
!(new_word=newlist=_mi_ft_parserecord(info, keynr, newrec,
&info->ft_memroot)))
goto err;
error=0;
while(old_word->pos && new_word->pos)
{
cmp= ha_compare_text(cs, (uchar*) old_word->pos,old_word->len,
(uchar*) new_word->pos,new_word->len,0,0);
cmp2= cmp ? 0 : (fabs(old_word->weight - new_word->weight) > 1.e-5);
if (cmp < 0 || cmp2)
{
key_length=_ft_make_key(info,keynr,keybuf,old_word,pos);
if ((error=_mi_ck_delete(info,keynr,(uchar*) keybuf,key_length)))
goto err;
}
if (cmp > 0 || cmp2)
{
key_length=_ft_make_key(info,keynr,keybuf,new_word,pos);
if ((error=_mi_ck_write(info,keynr,(uchar*) keybuf,key_length)))
goto err;
}
if (cmp<=0) old_word++;
if (cmp>=0) new_word++;
}
if (old_word->pos)
error=_mi_ft_erase(info,keynr,keybuf,old_word,pos);
else if (new_word->pos)
error=_mi_ft_store(info,keynr,keybuf,new_word,pos);
err:
free_root(&info->ft_memroot, MYF(MY_MARK_BLOCKS_FREE));
DBUG_RETURN(error);
}
