On Thu, Mar 12, 2009 at 21:16, Candide Kemmler <cand...@palacehotel.org> wrote: > > On 11 Mar 2009, at 23:21, Earwin Burrfoot wrote: > >> Take ANTLR and roll your own query parser from scratch? It's pretty easy. >> > > Hi Earwin, > > That would be fantastic, since our parser is already specified as an ANTLR > grammar. However, I can't seem to find an antlr grammar in the lucene > source. Obviously what we want is to extend the existing query support, not > just create a new one from scratch.
Lucene's default QueryParser uses javacc if I'm not mistaken. And I don't see any way to extend it except by patching and using modified version. If you want to explore some existing alternatives, Mark has an article here - http://www.lucidimagination.com/blog/2009/02/22/exploring-query-parsers/ My personal opinion is that default parser is only suitable for something that isn't going to see real world use. > > Regards, > > Candide > >> On Thu, Mar 12, 2009 at 04:24, Candide Kemmler <cand...@palacehotel.org> >> wrote: >>> >>> Hello, >>> >>> I'm looking at a way to extend the lucene query parser to allow for >>> semantic >>> computations in IEML space (see http://ieml.org). What I'd like to know >>> is: >>> how difficult it would be to be able to add clauses to query like: ... >>> AND ( >>> some_IEML_expression) AND ... >>> >>> some_IEML_expression would involve a reference to some field that would >>> contain metadata expressed in that format. >>> >>> Thanks in advance for you insights. >>> >>> Candide >>> >>> --------------------------------------------------------------------- >>> To unsubscribe, e-mail: java-dev-unsubscr...@lucene.apache.org >>> For additional commands, e-mail: java-dev-h...@lucene.apache.org >>> >>> >> >> >> >> -- >> Kirill Zakharenko/Кирилл Захаренко (ear...@gmail.com) >> Home / Mobile: +7 (495) 683-567-4 / +7 (903) 5-888-423 >> ICQ: 104465785 >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: java-dev-unsubscr...@lucene.apache.org >> For additional commands, e-mail: java-dev-h...@lucene.apache.org >> > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-dev-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-dev-h...@lucene.apache.org > > -- Kirill Zakharenko/Кирилл Захаренко (ear...@gmail.com) Home / Mobile: +7 (495) 683-567-4 / +7 (903) 5-888-423 ICQ: 104465785 --------------------------------------------------------------------- To unsubscribe, e-mail: java-dev-unsubscr...@lucene.apache.org For additional commands, e-mail: java-dev-h...@lucene.apache.org
