[Hibernate Search] AND in queries

fabreax · **Posted:** Tue May 15, 2007 6:00 am

Hello,

I have a question about "AND" in queries :
If my query is (categorie.nom:divers2) AND (titre:h*), I have results.
If it is categorie.nom:divers2, I have no results.

false AND true = false ... what's happen ?

Thank you.

emmanuel · **Posted:** Tue May 15, 2007 1:13 pm

try and display query.toString() to understand how your query has been parsed

Also note that the boolean view is somewhat misleading
http://mail-archives.apache.org/mod_mbox/lucene-java-dev/200408.mbox/%3C41267191.6060905@apache.org%3E

fabreax · **Posted:** Wed May 16, 2007 11:16 am

Thank you very much.

"categorie.nom:divers2" was parsed in "categorie.nom:divers" ! The "2" disapeared ...

If I use categorie.nom:'divers2' I have the same problem !

emmanuel · **Posted:** Thu May 17, 2007 8:43 pm

That's because a parsed query use an Analyzer,
The one you use seems to get rid of numbers

I would warmly recommend Lucene in Action, it explains in depth what is an analyzer, why it's needed, and what are the drawbacks

fabreax · **Posted:** Mon May 21, 2007 5:14 am

Thank you again.

I tried to change Analyser in cfg.xml file, but the problem was not with indexes but with queries :

Code:

new QueryParser("title", new StopAnalyzer());

must be replaced by

Code:

new QueryParser("title", new StandardAnalyzer());

or other analyser.