Re: [HACKERS] small bug in hlCover
Thank you, patch applied.
Sushant Sinha wrote:
Has any one noticed this?
-Sushant.
On Wed, 2008-07-16 at 23:01 -0400, Sushant Sinha wrote:
I think there is a slight bug in hlCover function in wparser_def.c
If there is only one query item and that is the first word in the text,
then hlCover does not returns any cover. This is evident in this example
when ts_headline only generates the min_words:
testdb=# select ts_headline('1 2 3 4 5 6 7 8 9 10','1'::tsquery,
'MinWords=5');
ts_headline
--
1 2 3 4 5
(1 row)
The problem is that *q is initialized to 0 which is a legitimate value
for a cover. So I have attached a patch that fixes it and after applying
the patch here is the result.
testdb=# select ts_headline('1 2 3 4 5 6 7 8 9 10','1'::tsquery,
'MinWords=5');
ts_headline
-
1 2 3 4 5 6 7 8 9 10
(1 row)
-Sushant.
--
Teodor Sigaev E-mail: [EMAIL PROTECTED]
WWW: http://www.sigaev.ru/
--
Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-hackers
Re: [HACKERS] small bug in hlCover
On Mon, 2008-08-04 at 00:36 -0300, Euler Taveira de Oliveira wrote:
> Sushant Sinha escreveu:
> > I think there is a slight bug in hlCover function in wparser_def.c
> >
> The bug is not in the hlCover. In prsd_headline, if we didn't find a
> suitable bestlen (i.e. >= 0), than it includes up to document length or
> *maxWords* (here is the bug). I'm attaching a small patch that fixes it
> and some comment typos. Please apply it to 8_3_STABLE too.
Well hlCover purpose is to find a cover and for the document '1 2 3 4 5
6 7 8 9 10' and the query '1'::tsquery, a cover exists. So it should
point it out.
On my source I see that prsd_headline marks only min_words which seems
like the right thing to do.
-Sushant.
>
> euler=# select ts_headline('1 2 3 4 5 6 7 8 9 10','1'::tsquery,
> 'MinWords=5');
> ts_headline
> -
> 1 2 3 4 5 6 7 8 9 10
> (1 registro)
>
> euler=# select ts_headline('1 2 3 4 5 6 7 8 9 10','1'::tsquery);
> ts_headline
> -
> 1 2 3 4 5 6 7 8 9 10
> (1 registro)
>
>
--
Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-hackers
Re: [HACKERS] small bug in hlCover
Has any one noticed this?
-Sushant.
On Wed, 2008-07-16 at 23:01 -0400, Sushant Sinha wrote:
> I think there is a slight bug in hlCover function in wparser_def.c
>
> If there is only one query item and that is the first word in the text,
> then hlCover does not returns any cover. This is evident in this example
> when ts_headline only generates the min_words:
>
> testdb=# select ts_headline('1 2 3 4 5 6 7 8 9 10','1'::tsquery,
> 'MinWords=5');
>ts_headline
> --
> 1 2 3 4 5
> (1 row)
>
> The problem is that *q is initialized to 0 which is a legitimate value
> for a cover. So I have attached a patch that fixes it and after applying
> the patch here is the result.
>
> testdb=# select ts_headline('1 2 3 4 5 6 7 8 9 10','1'::tsquery,
> 'MinWords=5');
> ts_headline
> -
> 1 2 3 4 5 6 7 8 9 10
> (1 row)
>
> -Sushant.
--
Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-hackers
[HACKERS] small bug in hlCover
I think there is a slight bug in hlCover function in wparser_def.c
If there is only one query item and that is the first word in the text,
then hlCover does not returns any cover. This is evident in this example
when ts_headline only generates the min_words:
testdb=# select ts_headline('1 2 3 4 5 6 7 8 9 10','1'::tsquery,
'MinWords=5');
ts_headline
--
1 2 3 4 5
(1 row)
The problem is that *q is initialized to 0 which is a legitimate value
for a cover. So I have attached a patch that fixes it and after applying
the patch here is the result.
testdb=# select ts_headline('1 2 3 4 5 6 7 8 9 10','1'::tsquery,
'MinWords=5');
ts_headline
-
1 2 3 4 5 6 7 8 9 10
(1 row)
-Sushant.
Index: src/backend/tsearch/wparser_def.c
===
RCS file: /home/postgres/devel/pgsql-cvs/pgsql/src/backend/tsearch/wparser_def.c,v
retrieving revision 1.15
diff -c -r1.15 wparser_def.c
*** src/backend/tsearch/wparser_def.c 17 Jun 2008 16:09:06 - 1.15
--- src/backend/tsearch/wparser_def.c 17 Jul 2008 02:45:34 -
***
*** 1621,1627
QueryItem *item = GETQUERY(query);
int pos = *p;
! *q = 0;
*p = 0x7fff;
for (j = 0; j < query->size; j++)
--- 1621,1627
QueryItem *item = GETQUERY(query);
int pos = *p;
! *q = -1;
*p = 0x7fff;
for (j = 0; j < query->size; j++)
***
*** 1643,1649
item++;
}
! if (*q == 0)
return false;
item = GETQUERY(query);
--- 1643,1649
item++;
}
! if (*q < 0)
return false;
item = GETQUERY(query);
--
Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-hackers
