Re: [GENERAL] Fragments in tsearch2 headline - Mailing list pgsql-hackers

From Teodor Sigaev
Subject Re: [GENERAL] Fragments in tsearch2 headline
Date
Msg-id 48379494.4020504@sigaev.ru
Whole thread Raw
List pgsql-hackers
> stucked with the function LexizeExec which I do not totally understand
> (... and is not well documents too :) )

Sorry for that. LexizeExec() is a play around supporting thesaurus dictionary, 
which is designed to replace phrase by phrase. So, if it see first matched word 
then it asks the parse to get next word. On next word it have four options: - asks next word - returns substituting
phrase- says: Hey, I have a match, but it's possible to find a largest match, so 
 
give a next word - says about false match, so parser should return back and try next dictionary 
from the begining or last match.

Now only thesaurus dictionary can work in that mode but nothing forbids to have 
another dictionary with phrase recognition.

-- 
Teodor Sigaev                                   E-mail: teodor@sigaev.ru
  WWW: http://www.sigaev.ru/
 


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