Hi Ivan,
Thanks for the answer.
Is the litterals < 4c something you will put as a config parameter in the
future ?
That may be handful for various use-cases
Best,
Alex.
On 25 Mar 2011, at 18:12, Ivan Mikhailov wrote:
> Hello Alexandre,
>
> Any phrase is searched as a group of words, so each word should be found
> first in the free-text index. For phrase 'social d*' it means searches
> for
> 'social' and 'd*', then checks for word positions such that 'social' and
> 'd*' are in the desired proximity at some place of some document that
> contains both. So 'd*' should be selective enough by itself, without a
> connection to "social"; however it does not.
>
> Re. "litterals < 4 chars" :
>
> This can be tweaked in
>
> wp_wildcard_range (const char * word, caddr_t * lower, caddr_t * higher)
> {
> char * star = strchr (word, '*');
> int leading = star ? (int) (star - word) : 0;
> if (star)
> {
> if (leading < 4)
> return RANGE_ERROR;
> ...
> in libsrc/Wi/text.c, by replacing "leading < 4" with "leading < 2" or
> something, but that can simply make different problems to report if
> #define for WST_WILDCARD_MAX is kept unchanged and there are too many
> words that match the wildcard.
>
> Best Regards,
> Ivan Mikhailov
> OpenLink Software
> http://virtuoso.openlinksw.com
>
> On Tue, 2011-03-15 at 14:01 -0500, Alexandre Passant wrote:
>> Hi all,
>>
>>
>> I have trouble to understand how the free-text index works in
>> Virtuoso, especially the minimal length of the indexed string.
>
>
>
