Re: tsearch Parser Hacking

David,

it's not easy to hack tsearch parser, sorry. You can preparse your input
before to_tsquery,to_tsvector.

Oleg
On Mon, 14 Feb 2011, David E. Wheeler wrote:

> Hackers,
>
> Is it possible to modify the default tsearch parser so that / doesn't get lexed as a "file" token? That is, instead of this:
>
> try=# select * from ts_debug('simple'::regconfig, 'w/d');
> alias │ description │ token │ dictionaries │ dictionary │ lexemes
> ───────┼───────────────────┼───────┼──────────────┼────────────┼─────────
> file │ File or path name │ w/d │ {simple} │ simple │ {w/d}
>
> Ideally it'd think that / was the same as -:
>
> try=# select * from ts_debug('simple'::regconfig, 'w-d');
> alias │ description │ token │ dictionaries │ dictionary │ lexemes
> ─────────────────┼─────────────────────────────────┼───────┼──────────────┼────────────┼─────────
> asciihword │ Hyphenated word, all ASCII │ w-d │ {simple} │ simple │ {w-d}
> hword_asciipart │ Hyphenated word part, all ASCII │ w │ {simple} │ simple │ {w}
> blank │ Space symbols │ - │ {} │ [null] │ [null]
> hword_asciipart │ Hyphenated word part, all ASCII │ d │ {simple} │ simple │ {d}
> (4 rows)
>
> Possible? Or would I have to write a completely new parser just to change this bit?
>
> Thanks,
>
> David
>
>
>

Regards,
Oleg
_____________________________________________________________
Oleg Bartunov, Research Scientist, Head of AstroNet (www.astronet.ru),
Sternberg Astronomical Institute, Moscow University, Russia
Internet: oleg(at)sai(dot)msu(dot)su, http://www.sai.msu.su/~megera/
phone: +007(495)939-16-83, +007(495)939-23-83