Sabbiolina, you have two options: 1. Write you very own parser 2. Write dictionary, which breaks host to parts Fortunately, you can use our dict_regex dictionary (http://vo.astronet.ru/arxiv/dict_regex.html) instead of 2. Oleg On Wed, 18 Jun 2008, Sabbiolina wrote:
Hello, I've seen that the default parser for the full-text search can identify e-mail addresses, hosts, URLs? but I have a serious problem with it: Suppose I index the following sentence "the search engine I use the most is www.google.com" And I search "google" no result is found. Instead if I search "www.google.com" the record is found correctly. I guess the reason is because the parser treats www.google.com as a single token (of type 'host') but as everyone can easily see the result of this is a major problem. In fact the word "google" actually is in the above sentence, and the end-user of the database obviously asks me "why does your FTS not find that record when I can clearly see that my search term is there?" Reading the docs I've seen that the parser can produce multiple tokens for the same word (for example the word "make-up" produces 4 tokens: make-up, make, -, up)? why not doing the same with URLs and e-mails? Why www.google.com is only treated as a unique word? Why not producing multiple tokens like www.google.com, www, ., google, ., com? (obviously www and . can be nulled or stopworded). Does anybody know of a better parser for Postgres? Or at least a trick to make its FTS find the record above by searching only a part of the URL?
Regards, Oleg _____________________________________________________________ Oleg Bartunov, Research Scientist, Head of AstroNet (www.astronet.ru), Sternberg Astronomical Institute, Moscow University, Russia Internet: oleg@xxxxxxxxxx, http://www.sai.msu.su/~megera/ phone: +007(495)939-16-83, +007(495)939-23-83
