See below On Fri, Mar 6, 2009 at 1:44 AM, Ganesh <emailg...@yahoo.co.in> wrote:
> Hello all > > 1) > Which is best to use Snowball analyzer or Lucene contrib analyzer? There is > no inbuilt stop word list for Snowball analyzer? > What is the "Lucene contrib analyzer"? There are 12 of them...... And regardless, the answer is "It depends" on what you're trying to accomplish, which you haven't stated. I don't know if there's a default set of stop words, but this seems like a pretty easy thing to test for yourself. > > 2) > Whether Analyzer and QueryParser are thread-free. They could created once > and use it in as many threads? > >From the FAQ ( http://wiki.apache.org/lucene-java/LuceneFAQ#head-42833b3bb259e10c64424a892a3f04840a187d80 ) Is the QueryParser thread-safe? No, it's not. I'm unsure about analyzers, but they are so lightweight I wouldn't go to the trouble of sharing them among threads just to be safe. > > 3) > I am using Snowball Analyzer to do index and search., When i search for > windows AND vista, QueryParser is adding AND as part of search, But i am > expecting something like +windows +vista. > How do you know this? Is the the result of query.toString? And is the "AND" *in your query* uppercase? One of the quirks of Lucene is that it requires 'and', 'or' and 'not' to be uppercase to be interpreted as you expect. Best Erick > > Regards > Ganesh > Send instant messages to your online friends http://in.messenger.yahoo.com > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-user-h...@lucene.apache.org > >
